Massey Ferguson 255 | 265 | 275 Tractor Service Manual 2 - AG4.212 AND AG4.236 GASOLINE ENGINES...

Serv

ice

Man

ual

Service Manual

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF MASSEY HARRIS MASSEY FERGUSON OR IT’S SUCCESSORS. MASSEY HARRIS MASSEY FERGUSON AND IT’S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

MF255, MF265 & MF275

MH-S-MF255+

http://www.jensales.com/products/massey-ferguson-tractor-service-manual-mh-s-mf255.html

Make: Massey-Ferguson Model: 255 Years Made:

1975-1981Make: Massey-Ferguson Model: 265 Years Made: 1975-1983

HP-PTO: 50.69 HP-Engine: HP-Drawbar: 42.0 HP-PTO: 60.73 HP-Engine: HP-Drawbar: 50.3

HP-Range: 51 Engine-Make: PERKINS

Engine-Fuel: DIESEL HP-Range: 61 Engine-Make:

PERKINS Engine-Fuel: DIESEL

Engine-Cyl(s)-CID: 4/203

Transmission-STD: GEAR Optional: Engine-Cyl(s)-CID:

4/236Transmission-STD: SM Optional:

Fwd/Rev Standard: 8/2

Fwd/Rev Optional: Mfwd-Std/Opt: Fwd/Rev Standard:

8/2Fwd/Rev Optional: 12/4 Mfwd-Std/Opt:

Tires-Std Front: 7.5L-15

Tires-Std Rear: 16.9-28

Wheelbase-Inch:


Tires-Std Rear: 16.9-28 Wheelbase-Inch:

Pto Type: LIVE Pto Speed: 540

CAT I-3pt Hitch: True Pto Type: LIVE Pto Speed:

540 CAT I-3pt Hitch: False

CAT II-3pt Hitch: False

CAT III-3pt Hitch: False Hitch Lift: CAT II-3pt Hitch:

TrueCAT III-3pt Hitch: False Hitch Lift:

Hydraulics-Type: Hyd-Cap: Hyd-Flow: Hydraulics-Type: Hyd-Cap: Hyd-Flow:

Hyd Std Outlets: Cooling Capacity:

Fuel Tank Capacity: Hyd Std Outlets: Cooling

Capacity: Fuel Tank Capacity:

Cab-Stdm A/C; Rops: Weight: 5970 New Price: 8087 Cab-Stdm A/C;

Rops: Weight: 6385 New Price: 8721

Make: Massey-Ferguson Model: 275 Years Made:

1975-1983

HP-PTO: 67.43 HP-Engine: HP-Drawbar: 59.7 Year Beginning Serial Number

HP-Range: 67 Engine-Make: PERKINS

Engine-Fuel: DIESEL 1975 9A207681

Engine-Cyl(s)-CID: 4/248

Transmission-STD: SM Optional: 1976 9A232539

Fwd/Rev Standard: 8/2

Fwd/Rev Optional: 12 Mfwd-Std/Opt: 1977 9A257837


Tires-Std Rear: 15.5-38

Wheelbase-Inch: 1978 9A280301

Pto Type: LIVE Pto Speed: 540

CAT I-3pt Hitch: False 1979 9A300200

CAT II-3pt Hitch: True

CAT III-3pt Hitch: False Hitch Lift: 1980 9A326169

Hydraulics-Type: Hyd-Cap: Hyd-Flow: 1981 9A339343

Hyd Std Outlets: Cooling Capacity:

Fuel Tank Capacity:

Cab-Stdm A/C; Rops: Weight: 6610 New Price:

20683 Paint Codes

Location MFG Color Name

ENGINE FLINT GREYYear Beginning Serial Number BODY OF TRACTOR MASSEY FERGUSON RED1975 9A207681 TRIM SILVER MIST

1976 9A2325391977 9A2578371978 9A2803011979 9A3002001980 9A3261691981 9A3393431982 9A3505841983 9A354679

LEFT OF STEERING COLUMN, BELOW THE INSTRUMENT PANEL MF 265 & MF275

LEFT OF STEERING COLUMN, BELOW THE INSTRUMENT PANEL MF 255


PART 1 - IMPORTANT PROCEDURES AND DATA

CONTENTS

PAGE

SAFETY PRECAUTIONS ............................. , ............................................. . 2

ROLL OVER PROTECTIVE STRUCTURES (ROPS) and/or SAFETY FRAMES ............................. 3

SERVICE PROCEDURE RECOMMENDAfiONS ........... ,........................................... 3

SPECIAL TOOLS .................................................................................. 3

TIGHTENING TORQUE RECOMMENDATIONS ....................................... ,................ 4

CONVERSION TABLES..... ......................................................................... 5

SERVICE BULLETINS

Although the latest available service information has been included within this Manual at the time it was prepared ... this information is subject to change, or to be supplemented by service bulletins. As these bulletins are received, record them in the space provided below.

Bulletin No. Date Issued Subject, or Part Affected

PREPARED BY F. PARROTT -1- IMPORTANT PROCEDURES AND DATA


PART 2 - AG4.212 AND AG4.236 GASOLINE ENGINES

CONTENTS

PAGE

INTRODUCTION ............................. 2 General Information ..................... '. 2 Engine Serial Number ..................... 2

SPECIFICATIONS ............................ 3 General Specifications .................... . Tightening Torques ....................... . Engine Overhaul Specifications ............ . Lubrication System Specifications ......... . Fuel System Specifications ................ . Ignition System Specifications ............. . Cooling System Specifications ............. .

3 3 4 7 8 9

10

ENGINE REMOVAL AND INSTALLATION ...... 10 Removing Engine .................... ,. . . . .. 10 Installing Engine .......................... 11

CYLINDER HEAD ............................ 11 Removing Cylinder Head ................... 11 Disassembling Cylinder Head. . . . . . . . . . . . . .. 12 Cylinder Head Inspection and Servicing ............................. 12 Valve Guides .............................. 13 Valves and Valve Seats .................... 13

Servicing Valves and Valve Seats ......... 13 Replacing Exhaust Valve Seat Inserts ..... 13

Valve Springs and Valve Stem Seals ........ 14 Rocker Arm Shaft Assembly . . . . . . . . . . . . . . .. 14

Disassembling Rocker Arm Shaft Assembly ......................... 14 Replacing Rocker Arm Bushings .......... 15, Reassembling Rocker Arm Shaft Assembly ......................... 15

Reassembling Cylinder Head ............... 15 Installing Cylinder Head. . . . . . . . . . . . . . . . . . .. 15 Adjusting Valve Lash ...................... 16

PISTONS AND CONNECTING RODS .......... 17 Removing Piston/Connecting Rod Assembly ............................. 17 Separating Piston from Connecting Rod ........................... 17 Connecting Rods .......................... 17

Connecting Rod Alignment ............... 17 Replacing Piston Pin Bushings ........... 18

Pistons and Rings ......................... 18 Pistons ................................. 18 Piston Rings ............................ 18

Rejoining Piston to Connecting Rod ......... 19 Installing Piston/Connecting Rod Assembly ............................. 19

CYLINDER BLOCK AND LINERS .............. 20 In,specting and Servicing Cylinder Block and Liners .................. 20 Replacing Cylinder Liner ................... 21

PAGE

CRANKSHAFT AND MAIN BEA'RINGS ......... 22 Crankshaft End-Play ....................... 22

Checking Crankshaft End-Play .. . . . . . . . . .. 22 Replacing Thrust Washers ............... 22

Removing Crankshaft ...................... 23 Inspecting Crankshaft . . . . . . . . . . . . . . . . . . . . .. 23 Regrinding Crankshaft ..................... 24 Installing Crankshaft. . . . . . . . . . . . . . . . . . . . . .. 24 Rear Crankshaft Oil Seal ................... 25

One-Piece Lip-Type Seal ................. 25 Two-Piece Rope-Type Seal ............... 26

FLYWHEEL ................................. 27 Replacing Ring Gear ................... , .. ,. 27 Installing Flywheel ........................ 27

TIMING CASE AND DRIVE Timing Gear Case ........................ .

Replacing Front Crankshaft Oil Seal ..... . Installing Timing Gear Cover ............ . Removing Timing Gear Housing ......... . Installing Timing Gear Housing .......... .

Timing Gears ............................ . Timing Gear Backlash and End-Play ..... . Removing Timing Gears ................ . Replacing Idler Gear Bushings .......... . Installing Timing Gears and

28 28 28 28 28 29 29 29 30 30

Retiming Engine ........................ 31 Camshaft ................................. 31

Camshaft End-Play ...................... 31 Removing Camshaft and Tatpets ......... 31 Inspecting Camshaft, Bushmg, Thrust Washer and Tappets .............. 32 Installing Camshaft and Tappets .......... 32

Checking Valve Timing. . . . . . . . . . . . . . . . . . . .. 33

ENGINE BALANCER ASSEMBLY. . . . . . . . . . . . .. 33' Balancer Idler Gear Backlash and End-Play ..................... 33 Removing and Disassembling Balancer ..... 34 Servicing Balancer Bearings ............... 36 Reassembling Balancer .................... 36 Instamng and Retiming Balancer ........... 36

LUBRICATION SYSTEM ...................... 37 Oil Pan .................................. .

Removing Oil Pan ...................... . Installing Oil Pan ....................... .

Oil Pump ................................ . Removing and Disassembling

37 37 37 37

Oil Pump ............................... 37 Inspecting Oil Pump ..................... 38 Reassembling and Installing Oil Pump .... 38

Replacing Oil Filter ........................ 38

-1-


PAGE PAGE

FUEL AND AIR SYSTEM ..................... 39 IGNITION SYSTEM .......................... 48 Air Cleaner ............................... 39 Distributor ................................ 48

Servicing Outer Filter Element ........... 39 Checking Centrifugal Advance Servicing Inner Filter Element ............ 39 Mechanism ..................... : ....... 48

Carburetor ................................ 39 Removing Distributor .................... 48 Removing Carburetor .................... 39 Disassembling Distributor ................ 49 Disassembling Carburetor ................ 40 Reassembling Distributor ................ 50 Servicing Carburetor ..................... 40 Installing Distributor and Reassembling Carburetor ................ 42 Setting Ignition Timing ................... 51 Installing Carburetor ..................... 43 Servicing Breaker Point Assembly ........ 52

Adjusting Choke Cable ..................... 43 Servicing Condensor ..................... 52 Adjusting Carburetor and Ignition Coil ............................... 52 Governor Control Linkage .................. 43 Spark Plugs ............................... 52 Adjusting Throttle Linkage ................. 44

COOLING SYSTEM .......................... 53 Governor IDistributor Water Pump .............................. 53 Drive Assembly .......................... , 44 Removing Water Pump .................. 53

Removing Governor IDistributor Drive Assembly ......................... 44 Disassembling Governor IDistributor Drive Assembly ......................... 46 Reassembling Governor IDistributor Drive Assembly ......................... 47 Installing Governor IDistributor

Disassembling Water Pump .............. 54 Reassembling Water Pump ............... 54 Installing Water Pump ................... 54

Thermostat ............................. ."' 55 Replacing Thermostat .................... 55 Testing Thermostat ...................... 55

Fan Belt Tension ............... , .......... 55

Drive Assembly ......................... 47 TROUBLE-SHOOTING ....................... 56

INTRODUCTION

GENERAL INFORMATION

This Part contains service information for PERKINS AG4.212 and AG4.236 Gasoline Engines used in MF 255 and MF 265 Tractors.

Thoroughly clean and inspect all components during servICing. Always plug or otherwise cover open fuel and oil lines and fittings to prevent entry of dirt.

Right and left-hand sides mentioned within text refers to engine as viewed from rear of flywheel. Direction of engine crankshaft rotation is viewed from crankshaft pulley end.

ENGINE SERIAL NUMBER

Engine Serial Number for AG4.212 and AG4.236 Gasoline Engines is located on right side of cyl-

inder block towards front. Fig. I. ALWAYS GIVE COMPLETE ENGINE SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.

Fig. 1 - Engine Serial Number Location

-2-


Clearance of Governor Shaft in Bushing ............................................. 0.0040-0.0055 inch Governor Shaft End-Play .............................................................. 0.004-0.008 inch Distributor Drive Housing Bore Diameter ............................................. 0.4375-0.4385 inch Distributor Drive Gear Shaft Diameter ............................................... 0.4355-0.4365 inch Clearance of Distributor Gear in Housing Bore .......................................... 0.001-0.003 inch Distributor Drive Gear End-Play ....................................................... 0.010-0.042 inch Governor Rear Housing Bore for Control Lever Shaft .................................. 0.4375-0.4385 inch Governor Control Lever Shaft Diameter .............................................. 0.4355-0.4365 inch Clearance of Control Lever Shaft in Rear Housing Bore ................................. 0.001-0.003 inch

IGNITION SYSTEM SPECIFICATIONS

Distributor: Make and Model No.:

AG4.212 ...................................................................... Delco-Remy 1112458 AG4.236 ...................................................................... Delco-Remy 1112693

Type of Advance ........................................................................... Centrifugal Direction of Rotation (Viewing Top of Distributor Cap) ................................... Counterclockwise Point Gap ................................................................................... 0.022 inch Dwell Angle .................................................................................. 31 °-34° Point Spring Tension ........................................................ 19-23 ozs. (behind contact) Condensor Capacity ..................................................................... .'..... 1.5 mf. Drive Shaft End-Play ................................................................. 0.002-0.010 inch Ignition Timing (Crankshaft Degrees and RPM):

AG4.212: Static Setting ............................................................... '.' ......... 120 B.T.D.C. Dynamic Setting ................................................ 360 B.T.D.C. @ 2000 rpm and over

AG4.236: Static Setting ......................................................................... 11 ° B.T.D.C. Dynamic Setting ................................................. 32° B.T.D.C. @ 2100 rpm and over

Distributor Advance Data (Distributor Degrees and RPM .,.-Distributor Rotates at 112 Crankshaft Speed):

Delco-Remy 1112458 Distributor (AG4.212): Type of Advance ........................................................................... Linear Advance at 450 Distributor RPM ........................................................... 00 to 1 ° Advance at 1000 Distributor RPM and Over ............................................... 11 ° to 13°

Delco-Remy 1112693 (AG4.236): Type of Advance ............................................................................ Linear Advance at 250 Distributor RPM ........................................................... 0° to 1 ° Advance at 1050 Distributor RPM and Over ............................................... 10° to 120

Ignition Coil: Make and Model No. . ............................................................ Delco-Remy 1115071 Volts ............................................................................................... 12 Primary Resistance @ 75° F. . ............................................................ 3.2-4.0 OHMS Secondary Resistance @ 75° F. . ................................................... 3000-20,000 OHMS

Spark Plugs: Make ........................................... Champion UJ-8 (standard equipment) or MF 834 230 M1 Size ........................................................................................... 14 mm G'ap ....................................................................................... 0.025 inch

9-AG4.2121 AG4.236 -

GASOLINE ENGINES


COOLING SYSTEM SPECIFICATIONS

Water Pump Impeller Clearance: Checking Clearance .............................................................. /:.. 0.027-0.035 inch Running Clearance .............................................................. ' ..... 0.010-0.035 inch

Thermostat: Type ................................................................................... Wax pellet type Opening Temperature .................................................................... 177°-183° F. Fully Open Temperature ........................................................................ 208° F. Valve Travel ............................................................................... 0.350 inch

Radiator: Recommended Coolant .................................... Water and ethylene-glycol anti-freeze mixture Cooling System Capacity ..................... ' ..................................... 11 U.S., 9.2 Imp. qts. Radiator Pressure Cap· ............................................................................ 7 psi

ENGINE REMOVAL AND INSTALLATION

Fig. 2 - Separating/Rejoining Front End Assembly

REMOVING ENGINE

1. Remove front grille panels and disconnect battery cables. Drain engine oil (if required) and coolant.

2. Remove fuel tank cap, radiator cap and hood. Reinstall caps to prevent entry of dirt.

3. Disconnect headlight wires (pull wiring free), radiator hoses, air cleaner hose, battery cable from starter motor and hydraulic oil cooler lines (if equipped).

4. Remove left rear side panel and disconnect power steering oil lines.

5. Support tractor with a jack at front of transmission. Place wedge blocks between front axle and axle support (to prevent tipping). Support front end assembly at front and rear.

6. Split front end assembly away from engine, Fig. 2.

7. Shut-off fuel tank valve. Disconnect fuel level gauge sending unit wire and fuel line from fuel tank valve. Remove fuel tank and fuel tank support plate. Disconnect rear of heat shield from tractor.

8. Disconnect, Fig. 3: a. Main harness wiring from alternator, starter

motor, water temperature gauge sending unit and ignition coil (pull wiring free).

b. Engine oil pressure line. c. Tachometer drive cable. d. Power steering pump oil lines. e. Choke cable.

9. Remove throttle rod. Remove muffler (vertical exhaust) or disconnect exhaust pipe (horizontal exhaust).

Fig. 3 - Identification of Parts

-10-



PART 3 - A04.203 01 ESEL ENGINE

CONTENTS

PAGE

INTRODUCTION ............................. 2 General Information ....................... 2 Engine Serial Number ..................... 2

SPECIFICATIONS ............................ 3 General Specifications ..................... 3 Tightening Torques ........................ 3 Engine Overhaul Specifications. . . . . . . . . . . .. 3 Lubrication System Specifications .......... 6 Fuel System Specifications ................. 7 Cooling System Specifications .............. 7

ENGINE REMOVAL AND INSTALLATION ...... 8 Removing Engine. . . . . . . . . . . . . . . . . . . . . . . . .. 8 Installing Engine .......................... 9

CYLINDER HEAD ............................ 9 Removing Cylinder Head ................... 9 Disassembling Cylinder Head ............... 10 Cylinder Head Inspection and Servicing ..... 11 Valve Guides .............................. 11 Valves and Valve Seats .................... 11

Servicing Valves and Valve Seats ......... 11 Installing Exhaust Valve Seat Inserts ...... 12

Valve Springs ............................. 13 Tappets ................................... 13 Rocker Arm Shaft Assembly ................ 13

Disassembling and Inspecting Rocker Arm Shaft Assembly . . . . . . . . . . . . .. 13 Reassembling Rocker Arm Shaft Assembly ......................... 13

Reassembling Cylinder Head ............... 14 Installing Cylinder Head .................... 14 Adjusting Valve Lash ...................... 14

PISTONS AND CONNECTING RODS .......... 15 Removing Piston/Connecting Rod Assembly ............................. 15 Separating Piston from Connecting Rod ........................... 15 Con necti ng Rods .......................... 1 5


Pistons and Rings ......................... 16 Pistons ................................. 16 Piston Rings ............................ 17


CYLINDER BLOCK AND LINERS .............. 19 Inspecting and Servicing Cylinder Block and Liners .................. 19 Replacing Cylinder Liner ................... 20

PAGE

CRANKSHAFT AND MAIN BEARINGS ......... 21 Crankshaft End-Play ....................... 21

Checking Crankshaft End-Play ............ 21 Replacing Thrust Washers ............... 21

Removing Crankshaft ...................... 22 Inspecting Crankshaft ...................... 22 Regrinding Crankshaft ..................... 22 Installing Crankshaft ....................... 22 Rear Crankshaft Oil Seal ................... 23


FLYWHEEL ................................. 25 Replacing Ring Gear ....................... 25 Installing Flywheel ........................ 25

TIMING CASE AND DRIVE ................... 26 Timing Gear Case ......................... 26

Replacing Front Crankshaft Oil Seal ...... 26 Installing Timing Gear Cover ............. 27 Removing Timing Gear Housing .......... 27 Installing Timing Gear Housing ........... 28

Timing Gears ...................... ;...... 28 Timing Gear Backlash and End-Play ...... 29 Removing Timing Gears ................. 29 Replacing Idler Gear Bushings ........... 30 Installing Timing Gears and Retiming Engine ........................ 30

Camshaft ................................. 30 Removing Camshaft ..................... 30 Inspecting Camshaft Thrust Washer and Tappets ..................... 31 Installing Camshaft ............... . ..... 31 Tachometer Drive ....................... 31

Checking Valve Timing ..................... 31

LUBRICATION SySTEM ...................... 32 Oil Pan ................................... 32

Removing Oil Pan ....................... 32 Installing Oil Pan ........................ 32

Oil Pump ................................. 33 Oil Pump Idler Gear Backlash and End-Play ................... 33 Removing Oil Pump ..................... 33 Disassembling Oil Pump ................. 33 Inspecting Oil Pump ..................... 34 Reassembling Oil Pump .................. 34 Installing Oil Pump ...................... 34

Replacing Oil Filter ........................ 34

-1- AD4.203 DIESEL ENGINE


PAGE PAGE

FUEL AND AIR SYSTEM ..................... 35 Disassembling Injectors .................. 40 Air Cleaner ............................... 35 Cleaning and Inspecting Injectors ......... 41

Servicing Outer Filter Element ........... 35 Assembling Injectors .................... 42 Servicing Inner Filter Element ............ 35 Installing Injectors ....................... 43

Fuel Lift Pump ............................ 35 Fuel Lines and Connections ................ 43 Removing and Disassembling High Pressure Lines ..................... 43 Fuel Lift Pump .......................... 35 Low Pressure Lines ..................... 43 Reassembling and Installing Air-Bleeding Fuel System .................. 43 Fuel Lift Pump .......................... 35

Replacing Fuel Filter Element ............... 36 COOLING SYSTEM .......................... 44 Fuel Injection Pump ....................... 36 Water Pump .............................. 44

Removing Injection Pump ................ 36 Removing Water Pump .................. 44 Installing Injection Pump ................. 37 Disassembling Water Pump .............. 44 Checking and Adjusting Reassembling Water Pump ............... 44 Injection Pump Timing ................... 37 Installing Water Pump ................... 45 Adjusting Fuel Shut-Off Control .......... 38 Thermostat ............................... 46 Adjusting Engine Speed ................. 38 Replacing Thermostat .................... 46 Adjusting Throttle Linkage ............... 38 Testing Thermostat ...................... 46

Fuel Injectors ............................. 39 Fan Belt Tension .......................... 46 Removing Injectors ...................... 39 Testing Injectors ........................ 39 TROUBLE-SHOOTING ....................... 47

INTRODUCTION

GENERAL INFORMATION

This Part contains service information for PERKINS AD 4.203 Direct Injection Diesel Engine used in MF 255 Tractor.

Thoroughly clean and inspect all components during servicing. Always plug or otherwise cover open fuel and oil lines and fittings to prevent entry of dirt.

Right and left-hand sides mentioned within text refers to engine as viewed from rear of flywheel. Direction of engine crankshaft rotation is viewed from crankshaft pulley end.


Engine Serial Number for AD4.203 Diesel Engine is located on left side of cylinder block towards rear,

Fig. 1. ALWAYS GIVE COMPLETE ENGINE SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.


-2-


FUEL SYSTEM SPECIFICATIONS

Fuel Injection Pump: Type ......... ; ...................................... CAV, DPA distributor type with mechanical governor CAV Specification Number . ' .................................................................. 3240F938 Service Setting Code .............................................................. MP 54/600/8/2160 Static Injection Timing ................................................. 26° B.T.D.C. (0.315 inch B.T.D.C,) Timing Letter on Injection Pump Rotor for Injection to No.1 Cylinder .................................. "B" No.1 Cylinder Outlet Marking ..................................................................... "W" Direction of Rotation Viewing Drive End ................................................ Counterclockwise Low Idle Speed ....... ' .................................................................. ' .. 725-775 rpm Maximum Engine Speed (No Load) ...................................................... 2135-2185 rpm

Fuel Injectors: Type .................................................................. CAV multi-hole, long stem nozzle CAV Nozzle Number:

Controlled Flow Injector .............................................................. BDLL 150S6674 Standard Injector .................................................................... BDLL 150S6554

CAV Holder Number .................................................................... BKBL 67S5299 Identification Code Letters:

Controlled Flow Injector ......................................................................... "FS" Standard Injector ....................................... , ....................................... "DN"

Nozzle Opening Pre,ssure: Working Pressure (Injector with More than 25 Hours Operation) ...................... 2500 psi (170ATS) Setting Pressure (New Injector or Used Injector with New Spring) .................... 2720 psi (185 ATS)

Spray Hole Diameter: Controlled Flow Injector ........................................... 0.0098-0.0102 inch (0.25-0.26 mm) Standard Injector ................................................. 0.0098-0.0106 inch (0.25-0.27 mm)

Spray Cone Angle ................................................................................ 150°

Fuel Lift Pump: Type ....... ~ ................................................................ A.C. Delco, diaphragm type Operating Pressure ............................................................................. 5-8 psi Method of Drive .................................................................. Eccentric on camshaft

Fuel; Recommended Diesel Fuel ....................................... ASTM Nos. 1 D (Winter) or 2D (Summer) Fuel Tank Capacity ........................................................... 18.5 U.S., 15.4 Imp. gals. Recommended Fuel Filter Element Change Interval ............................................ 500 hours

COOLING SYSTEM SPECIFICATIONS

Water Pump Impeller Clearance ....................................................... 0.015-0.025 inch

Thermostat: Type ................................................................................... Wax pellet type Opening Temperature .................................................................... 167°-173° F. Fully Open Temperature ........................................................................ 198° F. Valve Travel ............................................................................... 0.350 inch

Radiator: Recommended Coolant .................................... Water and ethylene-glycol anti-freeze mixture Cooling System Capacity .......................................................... 11 U.S., 9.2 Imp. qts. Radiator Pressure Cap ............................................................................ 7 psi

-7- AD4.203 DIESEL ENGINE


PART 4 - A4.236 AND A4.248 DIESEL ENGINES

CONTENTS

PAGE

INTRODUCTION ............................. 2 General Information ....................... 2 Engine Serial Number ..................... 2

SPECIFICATIONS ............................ 3 General Specifications ..................... 3 Tightening Torques ........................ 3 Engine Overhaul Specifications. . . . . . . . . . . .. 4 Lubrication System Specifications .......... 8 Fuel System Specifications ......... '" . . ... 9 Cooling System Specifications .............. 10

ENGINE REMOVAL AND INSTALLATION .............................. 11

Removing Engine .......................... 11 Installing Engine .......................... 11

CYLINDER HEAD ............................ 13 -Removing Cylinder Head ................... 13 Disassembling Cylinder Head ............... 13 Cylinder Head Inspection and Servicing ............................. 13 Valve Guides. . . . . . . . . . . . . . . . . . . . .. . . . . . . .. 14 Valves and Valve Seats .................... 14

Servicing Valves and Valve Seats ......... 14 Installing Valve Seat Inserts .............. 15

Valve Springs and Valve Stem Seals ........ 16 Rocker Arm Shaft Assembly . . . . . . . . . . . . . . .. 17

Disassembling Rocker Arm Shaft Assembly ......................... 17 Replacing Rocker Arm/Bushings .......... 17 Reassembling Rocker Arm Shaft Assembly ......................... 17

Reassembling Cylinder Head ............... 18 Installing Cylinder Head. . . . . . . . . . . . . . . . . . .. 18 Adjusting Valve Lash ...................... 19

PISTONS AND CONNECTING RODS .......... 20 Removing Pi~ton/Connecting Rod Assembly ............................. 20 Separating Piston From Connecting Rod ........................... 20 Connecting Rods .......................... 20


Pistons and Rings ......................... 21 Pistons ................................. 21 Piston Ri ngs ................ '. . . . . . . . . . .. 22


CYLINDER BLOCK AND LINERS .............. 25

PAGE

Inspecting and Servicing Cylinder Block and Liners .......................... 25 Replacing Cylinder Liner ................... 25

CRANKSHAFT AND MAIN BEARINGS ............................ 27

Crankshaft End-Play ....................... 27 Checking Crankshaft End-Play ............ 27 Replacing Thrust Washers ............... 27

Removing Crankshaft ...................... 28 Inspecting Crankshaft ...................... 28 Regrinding Crankshaft ..................... 29 Installing Crankshaft ....................... 29 Rear Crankshaft Oil Seal ................... 30


FLYWHEEL ................................. 32 Replacing Ring Gear ....................... 32 Installing Flywheel ........................ 32

TIMING CASE AND DRIVE ................... 33 Timing Gear Case ......................... 33

Tachometer Drive ....................... 33 Replacing Front Crankshaft Oil Seal ................................ 33 Installing Timing Gear Cover ............. 33 Removing Timing Gear Housing .......... 34 Installing Timing Gear Housing ........... 34

Timing Gears ............................. 34 Timing Gear Backlash and End-Play ...... 35 Removing Timing Gears ................. 35 Replacing Idler Gear Bushings ........... 35 Installing Timing Gears and Retiming Engine .................... 36

Camshaft ................................. 36 Camshaft End-Play ...................... 36 Removing Camshaft and Tappets ......... 37 Inspecting Camshaft, Bushing, Thrust Washer, and Tappets ..................... 37 Installing Camshaft and Tappets .......... 37

Checking Valve Timing ..................... 38

ENGINE BALANCER ASSEMBLY .............. 39 Balancer Idler Gear Backlash and End-Play ..................... 39 Removing and Disassembling Balancer .................................. 39 Servicing Balancer Bearings ............... 40 Reassembling Balancer .................... 41 Installing and Retiming Balancer ........... 41

-1- A4.236/A4.248 DIESEL ENGINES


PAGE PAGE

LUBRICATION SySTEM ...................... 43 Adjusting Fuel Shut-Off Oil Pan ................................... 43 Control ................................. 48

Removing Oil Pan ....................... 43 Adjusting Engine Speed ................. 48 Installing Oil Pan ........................ 43 Adjusting Throttle Linkage ............... 49

Oil Pump ................................. 43 Fuel Injectors ............................. 49 Removing and Disassembling Removing Injectors ...................... 49 Oil Pump ............................... 43 Testing Injectors ........................ 49 Inspecting Oil Pump ..................... 44 Disassembling Injectors .................. 50 Reassembling and Installing Cleaning and Inspecting Injectors ......... 50 Oil Pump ............................... 44 Reassembling Injectors .................. 53

Replacing Oil Filter ........................ 44 Installing Injectors ....................... 53 Fuel Lines and Connections ................ 53

High Pressure Lines ..................... 53 FUEL AND AIR SYSTEM ..................... 45 Low Pressure Lines ..................... 53

Air Cleaner ............................... 45 Air-Bleeding Fuel System .................. 53 Servicing Outer Filter Element ........... 45 Servicing Inner Filter Element ............ 45 COOLING SYSTEM .......................... 55

Fuel Lift Pump ......... .................. 45 Water Pump .............................. 55 Removing and Disassembling Removing Water Pump .................. 55 Fuel Lift Pump .......................... 45 Disassembling Water Pump .............. 55 Reassembling and Installing Reassembling Water Pump ............... 55 Fuel Lift Pump .......................... 46 Installing Water Pump ................... 57

Replacing Fuel Filter Element .............. 46 Thermostat ............................... 57 Fuel Injection Pump ....................... 47 Replacing Thermostat .................... 57

Removing Injection Pump ................ 47 Testing Thermostat ...................... 57 Installing Injection Pump ................. 47 Fan Belt Tension .......................... 57 Checking and Adjusting Injection Pump Timing ................... 47 TROUBLE-SHOOTING ....................... 58

INTRODUCTION

GENERAL INFORMATION

This Part contains service information for Perkins A4.236 and A4.248 Direct Injection Diesel Engines used in MF 255. MF 265. and MF 275 Tractors.

Thoroughly clean and inspect all components during servicing. Always plug or otherwise cover open fuel and oil lines and fittings to prevent entry of dirt.

Right and left-hand sides mentioned within text refers to engine as viewed from rear of flywheel. Direction of engine crankshaft rotation is viewed from crankshaft pultey end.


Engine Serial Number for A4.236 and A4.248 Diesel Engines is located on right side of cylinder block towards front. Fig. 1. Engine Serial Numbers for early engines were in the form of 236UA70319. Engine

Serial Numbers for later engines are in the form of LD22052N379C. ALWAYS GIVE COMPLETE ENGINE SERIAL NUMBER WHEN ORDERING REPLACEMENT PARTS.


-2-


Engine Model:

SPECIFICATIONS

GENERAL SPECIFICATIONS

MF 255 and MF 265 Tractors ....................................................•..... Perkins A4.236 MF 275 Tractor ....................................................................... Perkins A4.248

Total Piston Displacement: A4.236 ............................................................................ 236.1 cubic inches A4.248 ............................................................................ 248.6 cubic inches

Bore (Nominal): A4.236 ................................................................ ' ................. 3.875 inches A4.248 .................................... ; ... ' ....................•..................... 3.975 inches

Stroke ..............................................• ' ........................................ 5.0 inches Number of Cylinders ................ ' ................................................................. 4 Firing Order ................................................................................... 1-3-4-2 Compression Ratio ........................................................................ : ..... 16 to 1 Combustion System ..................................................................... Direct injection Direction of Engine Rotation (Viewing Crankshaft Pulley End) ................................... Clockwise Brake Horsepower (Manufacturer's Rating):

A4.236-MF 255 .................................................................. 53 BHP at 2000 rpm A4.236-MF 265 .................................................................. 61 BHP at 2000 rpm A4.248-MF 275 .............................. ',' .................................. 68 BHP at 2000 rpm

PTO Horsepower (Manufacturer's Rating): A4.236-MF 255 ................................................................... 52 HP at 2000 rpm A4.236-MF 265 ................................................................... 60 HP at 2000 rpm A4.248-MF 275 ................................................................... 67 HP at 2000 rpm

Peak Torque (Manufacturer's Rating): A4.236-MF 255 ............................................................. : . 157 ft.-Ibs. at 1400 rpm A4.236-MF 265 ............................................................... 179 ft.-Ibs. at 1400 rpm A4.248-MF 275 ............................................................... 194 ft.-Ibs. at 1400 rpm

Low Idle Speed ........................................................................... 725~775 rpm Maximum Engine Speed(No-Load) ....................................................... 2135-2185 rpm Rated Engine Speed .......................................................................... 2000 rpm Valve Lash (Intake and Exhaust): .

"Hot" .................................................................................... 0.010 inch "Cold" ................ ' ................................................................... 0.012 inch

*TIGHTENING TORQUES

Cylinder Head ........................................................................... 95:..100 ft.-Ibs. Connecting Rods .......................................................................... 75-80 ft.-Ibs. Main Bearings .......................................................................... 170-180 ft.-Ibs. Flywheel ................................................................................. 74-80 ft.-Ibs. Crankshaft Pulley ......... ~ ............................................................. 280-300 ft.-Ibs. Engine Idler Gear Hub (If Tabwasher Lock is Used) ............................................. ' 24 ft.-Ibs. Engine Idler Gear Hub (If Tabwasher Lock is Not Used) ......................................... 30 ft.-Ibs. Camshaft Gear ............................................................................ 45-50 ft.-Ibs. Injection Pump Gear ................................... , ......................... ' ......... 19-21 ft.-Ibs. Balancer Frame ........................................................................... 32-36 ft.-Ibs. Engine Oil Filter Head (to Cylinder Block) ................................................... 26-30 ft.-Ibs. Rocker Shaft Supports .................... .' ..................................... ' ........... 28-32 ft.-Ibs. Intake Manifold .................................................. ' ......................... 21-24 ft.-Ibs. Exhaust Manifold ......................................................................... 24-28 ft.-Ibs. Injector Hold-Down Nuts .................................................................. 10-12 ft.-Ibs. Injector Nozzle Cap Nut ....................................................................... 50 ft.-Ibs. High Pressure Fuel Line Nuts .............................................................. 12-15 ft.-Ibs. Oil Pan ................................................................................... 12-15 ft.-Ibs. Valve Cover ........................... , ..................................................... 5-9 ft.-Ibs. "Torque figures apply with threads clean and lightly oiled.

-3- A4.236/A4.248 DIESEL ENGINES


SPECIFICATIONS

PART 5 - CLUTCH

CONTENTS

PAGE

•••••••• > •••••••••••••••••••••••••••••••••••••••••••••••• '" • • • • •• • • • • • •• • •• •• • •• 2

OPERATION .... v................................................................................ 3 Dual Clutcn .................................................................................... 3 Split To-rque Clutch .......................................................................... _ .. 3

SEPARATING/REJOINING TRACTOR .............................................................. 4 Separating Tractor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 Rejoining Tractor ............................................................................... 4

SERVICING MF 255 AND MF 265 DUAL CLUTCH ................................................... 5 Removing Dual Clutch ......................... :................................................. 5 Disassembling Dual Clutch ......................................................... , .... ........ 5 Inspecting Dual Clutch. . . . . . .. . .. . . . . . . . . . ... . . . . .. . . .. . .. . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . ... . . . 6 Reassembling Dual Clutch ...................................................................... 7 Installing Dual Clutch ........................................................................... 9

.Adjusting Dual Clutch ........................................................................... 9

SERVICING MF 255 AND MF 265 SPLIT TORQUE CLUTCH .......................................... 10 Removing Split Torque Clutch ................................................................... 10 Disassembling Split Torque Clutch ............................................................... 10 Inspecting Split Torque Clutch ............................................................. " .... 11 Reassembling Split Torque Clutch ............................................................... 11 Installing Split Torque Clutch ........................ '" ................ " ....................... 11 Adjusting Split Torque Clutch ................................................................... 12

SERVICING MF 275 DUAL CLUTCH ................................................................ 12 Removing Dual Clutch ........................ .- ......... ',' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12 Disassembling Dual Clutch ...................................................................... 12 Inspecting Dual Clutch .......................................................................... 13 Reassembling Dual Clutch ...................................................................... 14 Installing Dual Clutch ........................................................................... 16 Adjusting Dual Clutch .......................................................................... 16

SERVICING MF 275 SPLIT TORQUE CLUTCH ....................................................... 17 Removing Split Torque Clutch ................................................................... 17 Disassembling Split Torque Clutch. . . . .. . . . . . . . . . . . . . . . . . . ... . .. . . . . . . . . . . . . . . . . . . . . . .. . . . ... . ... 17 Inspecting Split Torque Clutch ........................ " . . .. . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. . .. 18 Reassembling Split Torque Clutch ............................................................... 18 Installing Split Torque Clutch .................................................................... 19 Adjusting Split Torque Clutch ................................................................... 19

SERVICING BEARINGS AND RELEASE MECHANISM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20 Pilot Bearing ................................................................................... 20 Release Bearing ............................................................. . . . . . . . . . . . . . . . . . .. 20 Release Fork ................................................................................... 20

ADJUSTING CLUTCH LINKAGE .................................................................... 21

TROUBLE-SHOOTING ............................................................................ 22

-1- M~ ?<;<;/M~ ?fiFi/MF 17Fi - CLUTCH


SPECIFICATIONS

RATED CLUTCH COVER LOAD: Dual Clutch:

Primary Pressure Plate: MF 255 ................................................................................ 1400 Ibs. MF 265 ................................................................................ 1600 Ibs. MF 275 ................................................................................ 1950 Ibs.

Secondary Pressure Plate: MF 255 ................................................................................ 1400 Ibs. MF 265 ................................................................................ 1650 Ibs. MF 275 ................................................................................ 1950 Ibs.

Split Torque Clutch: MF 255 and MF 265 ..................................................................... 2050 Ibs. MF 275 .............................................................................•.... 1950 Ibs.

PRESSURE PLATE SPRINGS: Dual Clutch:

Primary Pressure Plate - Coil Springs: Checking Height:

MF 255 .......................................................................... 1.820 inches MF 265 .......................................................................... 1.800 inches MF 275 ........................................................................... 1.500 inches

Load ·at Checking Height: MF 255 ......................................................................... 134 ± 6.7 Ibs. MF 265 ........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 138 ± 6.9 Ibs. MF 275 .......................................................................... 152-168 Ibs.

Free Length of New Spring: MF 255 .......................................................................... 2.794 inches MF 265 .......................................................................... 2.782 inches MF 275 .......................................................................... 2.195 inches

Spring Color Code: MF 255 ................................................................................. Violet MF 265 ............................................ ; ......... ',' .................. Yellow Stripe MF 275 ................................................................................... Red

. Secondary Pressure Plate - Belleville Spring: Engaged Load:

MF 255 and MF 265 ........................................................... 1306-1467 Ibs. MF 275 ........................................................................ 1955-2192 Ibs.

Spring Color Code: MF 255 and MF 265 ................................................................ Light Blue MF 275 ............................................................................... Orange

Split Torque Clutch - Coil Springs: Checking Height:

MF 255 and MF 265 .............................................................. 1-7/16 inches MF 275 ............................................................................ 1.500 inches

Load at Checking Height: MF 255 and MF 265 ............................................................... 220-235 Ibs. MF 275 ............................................................................ 152-168 Ibs.

Free Length of New Spring: MF 255 and MF 265 ............................................................... 1.955 inches MF 275 ............................................................................ 2.195 inches

Spring Color Code: MF 255 and MF 265 ....................................................................... Pink MF 275 ...................................................................................... Red

-2-


SEPARATING/REJOINING TRACTOR

Fig. 1 - Left Side of Tractor

1. Multi-Power Shift Linkage 2. Oil Cooler Lines 3. Neutral Safety Start Switch Wiring 4: Rear Lighting Wire Harness 5. Fuel Tank Support 6. Capscrews

. 7. Capscrews

SEPARATING TRACTOR

1. Remove both red side panels and gray side panel on left side of tractor.

2. Disconnect, Fig. 1: a. Multi-Power shift linkage, No.1, (if equipped). b. Oil cooler lines, No.2, (if equipped). c. Neutral safety start switch wires, No.3. d. Rear lighting 'wire harness, No.4. Pull harness

free so it won't interfere with tractor separation. e. Exhaust pipe on horizontal exhaust models.

3. Remove fuel filter on diesel tractors. 4. Remove, Fig. 1:

a. Two capscrews securing fuel tank support, No. S, to rear of engine.

b. Two capscrews, No.6, securing fuel tank support to transmission shift cover.

••••

Fig. 2 - Separating/Rejoining Tractor

1. Capscrews with Bushings 2. Floor Jacks

Fig. 3 - Separating/Rejoining Tractor

c. Two capscrews, No.7, securing instrument panel to transmission shift cover. S. Remove capscrews at front of hood to allow

hood to tilt. Tilt complete hood/fuel tank/fuel tank support up at rear, and block it up by installing long capscrews with 3/8 inch thick bushings in holes where fuel tank support bolted ·to rear of engine, No.1, Fig. 2.

6. Wedge two wood blocks between front axle and front axle support to keep tractor from tipping.

7. Support engine.and transmission with floor jacks. 8. Remove bolts securing engine to transmission

(remove starter motor if required). Separate tractor (using guide studs) about 4 inches. Then raise rear of engine/front end assembly to clear transmission housing, and roll engine/front end assembly away, Figs. 2 and 3.

REJOINING TRACTOR

1. Lubricate transmission and PTO input shaft splines with light coat of Massey-Ferguson M-ll OS (or equivalent) lithium base grease, N.LG.I., No.2, Fig. 4 .

Fig. 4 - Transmission Separated from Engine

-4-


8-SPEED TRANSMISSIONS

CONTENTS

PAGE SERVICE INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SPECIAL TOOLS .................................................................................. 4

INSPECTION AND CLEANING..................................................................... 4

DISASSEMBLY AND REASSEMBLY ............................................................... 5 Brake Cross Shaft and Clutch Release Bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Shifter Forks and Rails ......................................................................... 6 Planetary Assembly ............................................................................ 9 Main Shaft and Change Speed Gears. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14 PTO Input Shaft and Retainer ................................................................... 1 6 Main Input Shaft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20 PTO Lower Shaft and Gear ..................................................................... 20 Countershaft and Related Gears. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 22 Reverse Idler Gear ........................................... -" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 24

IMPORTANT! These instructions pertain to servicing after the transmission assembly has been removed from Tractor and placed in a clean work area. (Procedures for removal from Tractor are not included) Certain areas of the transmission may be serviced by splitting Tractor between engine and transmission, or between transmission and center housing . .. refer to "Service Information" heading which includes information pertaining to different B-speed transmission assemblies that may be encountered.

-1- CS 17 2ND ISSUE


SERVICE INFORMATION

Fig. 1 - View at Front of Transmission Case -Typical Assembly

The main input shaft retainer and PTO input shaft (with their related seals and bearings) may be serviced by separating Tractor between engine and transmission ... this split will also allow servicing of IPTO (Independent Power Take-Off) pressure regulating valve used on some Tractor models. It will also allow servicing of engine clutch release bearing. See Fig. 1.

NOTE: Removal of main input shaft requires moving main shaft rearward.

The dual range planetary may be serviced by separating Tractor between transmission and center

Fig. 2 - View at Rear of Transmission -Typical Assembly

Fig. 3 - View of Shift Rails In Case (Shift Cover Removed) - Typical Assembly

housing. This split usually requires removal of shift cover so as to disconnect hydraulic line between auxiliary pump and regulating valve on certain Tractors. See Fig. 2. Shift rails and forks may be removed when this split is made ... if shift cover has been removed, see Fig. 3. Main shaft (with related gears and bearings) may be serviced after shift rails and planetary have been removed. Reverse idler gear may be serviced after mainshaft has been removed . .. see Fig. 4.

Removal of main input shaft, countershaft and PTO lower (front) shaft requires complete removal of transmission from Tractor.

NOTE: Certain differences may be encountered when applying these basic instructions to a particular transmission assembly. WHERE THESE·

Fig. 4 - Countershaft, Reverse Idler and Main Input Shaft - Shown After Removal of Shift Rails and

Mainshaft

*NOTE: These gears are lrd and 4th countershaft gears and specifically depends upon Tractor application.

-2-


MANUAL SHUTTLE TRANSMISSIONS - WITH PTO

Contents

PAGE

SERVICE INFORMATION .......................................................................... 2

SPECIAL TOOLS ................................................................................. 3

INSPECTION AND CLEANING ................................................................. ~ . .. 4

DISASSEMBLY AND REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 Brake Cross Shaft and Clutch Release Bearing ................................................... 4 Shifter Forks and Rails ...................................................... '.' . . . . . . . . . . . . . . . . . . 5 Planetary Assembly ............................................................................ 6 PTO Input Shaft and Retainer ................................................................... 8 PTO Lower Shaft and Bearing (on Constant Mesh Gear) .................•......................... 12 Main Input Shaft and Related Gears ............................................................. 13 Reverse Idler Gear Assembly .................................................................... 16 PTO Constant Mesh Gear (on Lower Shaft) ....................................................... 18 Main Shaft and Related Gears .................................................................. 18 Countershaft and Related Gears ................................................................. 20

!!! IMPORTANT!!! These Instructions pertain to servicing after transmission assembly has been removed from Tractor and placed in a clean work area. (Procedures for removal from Tractor are not included.) Certain areas of the transmission may be serviced by splitting Tractor between engine and transmission, . or between transmission and center housing. Refer to "Service Information" heading (which includes differences in transmission assemblies that may be encountered) for additional information.

-1-CS-22 1 ST ISSUE


6-SPEED TRANSMISSION

CONTENTS

PAGE

SERVICE INFORMATION

SPECIAL TOOLS ................................................................................. 5

INSPECTION AND CLEANING ..................................................................... 6

DISASSEMBLY AND REASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6 Brake Cross Shaft and Clutch Release Bearing ................................................... 6 Shifter Forks and Rails. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7 Planetary Assembly ............................................................................ 9 Main Shaft and "Change Speed" Gears .......................................................... 13 Reverse Cluster Gear Assembly ................................................................. 15 PTO Lower Shaft and Gear ...................................................................... 16 Input Shafts and Retainer ....................................................................... 18 Countershaft and Related Gears ................................................................. 23

IMPORTANT! These Instructions pertain to servlcmg after the transmission assembly has been removed frofJ1 Tractor and placed in a clean work area. (Procedures for removal from Tractor are not included.) Certain areas of the transmission may be serviced by splitting Tractor between engine and transmission, or between transmission and center housing . . '. refer to "Service Information" heading for additional information.

SERVICE INFORMATION

Certain differences will be encountered when applying these basic instructions to a particular transmission assembly. Where these differences affect service procedures ... they will be included within these Instructions. (Obvious differences such as shaft splines, gear sizes, etc., are not included.) Figure references show transmission with separate PTO shaft.

Additional information pertaining to servicing isas follows ... see Fig. 1:

1. The majority of 6-speed transmissions will have a PTO shaft (and related parts) separate of countershaft ... however, some assemblies with a "solid"

-1

countershaft may be encountered. (Single clutch is used, if transmission has "solid" countershaft ... dual clutch is used, if a separate PTO shaft is installed. The "solid" countershaft MAY be used to drive the Ferguson pump when separate PTO shaft is not used.)

2. If transmission has PTO shaft (through center of countershaft) ... service instructions for removal of input shafts and retainer housing are different from procedures recommended for assemblies with "solid" countershaft. (All other servicing is basically the same, except that PTO constant mesh gear, PTO lower shaft and shaft front bearing does not exist.)

CS-39 1 ST ISSUE


PART 7 - DRIVE AXLES AND BRAKES CONTENTS

PAGE SPECiFiCATIONS.... ...... . . . . .. . . . . . . .. . .. . .. . .. . .. . . . . . . . . . . .. .. .. . . . ... .. .. .. .. .. .. .. .... .. .. ... 1

General ....... '. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1 Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1 Bolt Torque ...................................................................................... .2

DRIVE AXLE IDENTIFICATION ....................................................................... 2

REAR WHEELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2

AXLE HOUSING (REFER ALSO TO CS-23) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3

BRAKE ADJUSTMENT (REFER ALSO TO CS-23) ...................................................... 4

DIFFERENTIAL BEARING PRE-LOAD .......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4

DIFFERENTIAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6 Backlash Adjustment ............................................................................. 6

CENTER HOUSING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8

DRIVE PINION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8 Drive Pinion Servicing ............................................................................ 13 Drive Pinion Servicing (Pin Retained Nut) ................................................ Refer to CS-53

PLANETARY. AXLE HOUSING AND BRAKES ............................................... Refer to CS-23

PLANETARY. AXLE HOUSING AND WET BRAKES .......................................... Refer to CS-47 Wet Brake Identification ................................. : .............................. Fig. 10. CS-47

DRIVE PINION. DIFFERENTIAL AND BEARING PRE-LOAD ................................... Refer to CS-53

This Part contains four separate sections of material. each beginning with Page 1. Place CS sections at end of Part as listed above.

SPECIFICATIONS

GENERAL

Axle Planetary Bearing Pre-Load ............................................................. 006"-.016" Differential Bearing Pre-Load ...................................................................... 015" Drive Pinion Bearing Pre-Load (Rolling Torque) .............................................. 18-22 in.-Ibs Pinion - Ring Gear Ratio ........................................................................ 3.45:1 Axle Planetary Ratio ............................................................................. 3.14: 1 Total Reduction Ratio .......................................................................... 10.86:1 Ring Gear and Pinion Backlash .............................................................. 003"-.019"

LUBRICATION (CAPACITIES APPROXIMATE U.S.)

Dry Brakes: Center Housing and Transmission ............................................................. 8 gallons

Massey-Ferguson Permatran® EP Transmission/Hydraulic Fluid Axle Planetary (Each Side) ................................................................. 1-1/2 quarts

Massey-Ferguson Permatran® EP Transmission/Hydraulic Fluid Wet Brakes: Use Massey-Ferguson M-1127 Lubricant in place of Permatran® in center housing and planetaries Linkage Grease Fittings ..... Massey-Ferguson M-11 05 (or equivalent quality) No.2 Lithium Base EP Grease

R-1179 -1-MF 225/MF 265/MF 275 -

DRIVE AXLE AND BRAKES


PART 9 - FRONT AXLE AND STEERING

CONTENTS

PAGE

TESTING AND TROUBLE-SHOOTING .............................................................. 2

ENGINE DRIVEN STEERING PUMP .............................................................. '" 3 Removal and Installation ........................................................................ 3 Servicing ............................................................................ Refer to CS-18

STEERING CONTROL UNIT ........................................................................ 4 Removal and Installation ........................................................................ 4 Servicing ............................................................................ Refer to CS-34

STEERING CYLINDER ............................................................................. 5 Removal and Installation ........................................................................ 5 Disassembly and Reassembly ................................................................... 6

STEERING SHAFT AND BUSHING REPLACEMENT .................................................. 7

FRONT AXLE REMOVAL AND INSTALLATION ...................................................... 8

SPINDLE AND BUSHING REPLACEMENT ........................................................... 10

WHEEL BEARINGS AND SEAL REPLACEMENT ..................................................... 11

STEERING WHEEL SHAFT AND BEARING REPLACEMENT ............... , ........................... 13

ENGINE DRIVEN STEERING PUMP (DISASSEMBLY) ....................................... Refer to CS-18

STEERING CONTROL UNIT (DISASSEMBLY - HYDROSTATIC HAND PUMP) ................ Refer to CS-34

This Part contains three separate sections of material, each beginning with Page 1. Place sections in order shown above (CS sections placed at end, in numerical order).

-1- MF 255/MF 265/MF 275 -FRONT AXLE AND STEERING


PART 10 - HYDRAULICS -3-POINT LINKAGE AND AUXILIARY

CONTENTS

PAGE

SERVICE INFORMATION.......................................................................... 2 Special Tools and Test Fittings .................................................................. 2 3-Point Linkage ................................................................................ 2 Auxiliary Hydraulics ............................................................................ 3

3-POINT LINKAGE TROUBLE-SHOOTING

"Quick" Service Checks ....................................................................... . Trouble Symptoms ............................................................................ .

ADJUSTMENTS ............................ ' ..................................................... . Master Control Spring ......................................................................... . "Final" Adjustments ................. ' ....................................................... ; .. .

5 5 8

9 9 9

HYDRAULIC LIFT COVER...... ..... ....... .... ..... .... .... .... ... ........................ ........ 1'4 Removal/Installation ........................•.................................................. 14 Servicing Lift Cover ....................................................... *Refer to Publication CS-41

FERGUSON HYDRAULIC PUMP ................................................................... 16 Removal/Installation ........................................................................... 16 Servicing Pump .......................................................... *Refer to Publication CS-43

AUXILIARY HYDRAULICS PUMP ASSEMBLY AND DRIVE TRAIN ............................................................. 19

Removal/Installation ........................................................................... "9 Servicing Pump and Drive Train (Single Pump) ............................. *Refer to Publication CS-26 Servicing Pump and Drive Train (Dual Pump) ............................... *Refer to Publication CS-31

AUXILIARY CONTROL VALVE ..................................................................... 19 Removal/Installation ........................................................................... 19 Servicing Valve Assembly ................................................. *Refer to Publication CS-32 Trouble-Shooting and Adjustments ........................................ *Refer to Publication CS-38

*IMPORTANT This Part contains separate Component Service Publications (referred to as CS- _) with instructions that pertain to bench servicing of assemblies . . . AFTER they have been removed. These publications may be found under this same divider tab ... immediately following this Part and are identified by the reference publication number printed in the lower right-hand corner of each odd numbered page.

The service procedures within this Part pertain to the 3-Point Linkage and Auxiliary Hydraulic Systems ONL Y . . . and their related components. To obtain instructions for other systems (i. e.: steering, Independent Power Take-Oft Multi-Power, etc.) refer to the appropriate Part (within this Manual) that pertains to the system.

-1- MF 255/MF 265/MF 275 - HYDRAULICS


FERGUSON HYDRAULIC PUMP -

WITH MOUNTED SERVO-VALVE

CONTENTS

PAGE

SERVICE INFORMATION .......................................................................... 1

INSPECTION AND CLEANING ..................................................................... 4

DiSASSEMBLy ................................................................................... 4

REASSEMBLY ................................................................................... 11

SERVO-VALVE SERViCiNG ........................................................................ 17

IMPORTANT These Instructions pertain to serVlcmg the Ferguson Pump after it has been removed from Tractor . . . procedures for removal have not been included. (Removal and reinstallation procedures may be obtained by referring to "Hydraulics - 3-Point Linkage" within this Manual.)

SERVICE INFORMATION

This is a full floating, constant running, scotch yoke, piston type (four cylinder) pump. It is located within the center housing and is driven by the transmission (oil within center housing and transmission supplies this pump).

Figs. 1, 2 and 3 identifies some of the major pump parts. Dowel pins through both sides of center housing maintains pump's position between transmission's lower shaft and rear PTO shaft (or rear support, if Tractor is not equipped with PTO). The two yokes ride on cam blocks which fit over eccentrics on camshaft. Both yokes have pistons on each side ... these yokes are interchangeable, but cam blocks are not. The two valve chambers are also inter-

changeable. These chambers contain a set of inlet and outlet valves for each piston reciprocating within chamber bores.

The pump may also serve as a mounting for the auxiliary hydraulic system pump ... and its drive train as shown in Fig. 1. If auxiliary pump (and its drive train) are not installed ... a drive coupler connects Ferguson pump camshaft to rear of transmission lower PTO shaft.

Ferguson pump contains following features that function as described, Fig. 2:

1. Servo-valve assembly (commonly referred to as pressure control valve) - this valve consists of a ball valve, a secondary relief valve and a diaphragm.

-1- CS-43 1 ST ISSUE


PART 11 - ELECTRICAL SYSTEM CONTENTS

PAGE

SPECiFiCATIONS ................................................................................. 2

BATTERy ......................................................................................... 4 - Conventional Battery ..................................... ." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4

Activating Dry Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 Servicing Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 Testing Battery ............................................................................... 5

Maintenance-Free Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5 Testing Maintenance-Free Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . .. 5 Charging Maintenance-Free Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6

ALTERNATOR............................. ....................................................... 6 Service Information. .. .. .. . . . .. .. .. . . . ... . .. . ..... ... .... . . ... ..... . . ........ .. .. . . ... .. ..... ... 6

Alternator Precautions ..................................................................... : ... 6 Alternator Operation ................................. ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6

Alternator Trouble-Shooting ................................. '" ..... . ..... . .. ..... .. .. .. . ....... 6 Undercharged Battery ........................................................................ 7 Overcharged Battery .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9

Alternator Overhaul ............................................................................. 10 Alternator Disassembly ....................................................................... 1.0 Bearing Replacement and Lubrication ..............................................•........... 11 Alternator Reassembly ........................................................................ 12

Alternator Component Testing and Servicing ..................................................... 12 Rotor Checks ................................................................................. 12 Slip Ring Servicing ............................................... '.' ........................... 13 Stator Checks ................................................................................ 13 Brush Holder and Regulator Check ............................................................ 14 Diode Trio Check ............................................................................. 14 Rectifier Bridge Check ........................................................................ 15.

STARTER MOTOR ............................................................................... . Trouble-Shooting Starter Circuit ................................................................ .

Starter Circuit Inspection .................................................................... . Starter Motor No-Load Test .................................................................. .

MF 255 and MF 265 Starter Motor Overhaul .............................................. : ..... . Starter Motor Disassembly ................................................................... . Field Frame Assembly ....................................................................... . Solenoid Assembly .......................................................................... . Starter Motor Cleaning and Lubrication ....................................................... . Starter Motor Reassembly .............................................................. : .... .

MF 275 Starter Motor Overhaul ................................................................ . Starter Motor Disassembly ................................................................... . Field Frame-Assembly ....................................................................... . Solenoid Assembly ...........................................................•............... Starter Motor Cleaning and Lubrication ....................................................... . Starter Motor Reassembly ................................................................... .

Starter Motor Component Testing and Servicing ................................................. . Brushes and Brush Holders Inspection ........................................................ . Armature Checks and Servicing ............................................................... . Field Coil Checks ............................................................................ . Solenoid Checks Pinion Clearance

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15 15 15 16 16 19 20 20 21 21 24 24 25 26 26 27 27 27 27 28 28 29

WIRING DIAGRAMS .............................................................................. 30

-1- MF 255/MF 265/MF 275 ELECTRICAL SYSI


Massey Ferguson 255 | 265 | 275 Tractor Service Manual 2 - AG4.212 AND AG4.236 GASOLINE ENGINES...

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Transcript of Massey Ferguson 255 | 265 | 275 Tractor Service Manual 2 - AG4.212 AND AG4.236 GASOLINE ENGINES...