Section 10 Chapter 14 · 24 Valve, 8.3 Liter Engine Lubricating Oil System - General Information...

Section 10 Chapter 14

7-89430NH

24 Valve, 8.3 Liter Engine

Lubrication Oil System

Note: All coding used in the 8.3 Liter and 9 Liter engine manuals are Cummins engine codes. These engine codes have no meaning to New Holland warranty codes and should only be used for procedure

steps.

24 Valve, 8.3 Liter Engine Lubricating Oil System Page a

7-89430NH Section 10 Chapter 14 Issued 8-2001

Lubricating Oil System

Contents

Engine Oil Heater (007-001) ........................................................................................................................................................................ 13Install (007-001-026) ...................................................................................................................................................................... 13Preparatory (007-001-000) ............................................................................................................................................................. 13Remove (007-001-002) .................................................................................................................................................................. 13

Flow Diagram, Lubricating Oil System ........................................................................................................................................................ 8Lubrication for the Turbocharger ...................................................................................................................................................... 9Lubrication for the Power Components .......................................................................................................................................... 10

Lubricating Oil System - General Information ............................................................................................................................................ 1

Lubricating Oil and Filters (007-002) .......................................................................................................................................................... 13Inspect (007-002-062) .................................................................................................................................................................... 13

Lubricating Oil Cooler (007-003) ................................................................................................................................................................. 14Clean (007-003-006) ...................................................................................................................................................................... 16Install (007-003-026) ...................................................................................................................................................................... 17Leak Test (007-003-014) ................................................................................................................................................................ 16Preparatory (007-003-000) ............................................................................................................................................................. 14Remove (007-003-002) .................................................................................................................................................................. 15

Lubricating Oil Dipstick (007-009) 18Calibrate (007-009-030) ................................................................................................................................................................. 18

Lubricating Oil Dipstick Tube (007-011) .................................................................................................................................................... 19Install (007-011-026) ...................................................................................................................................................................... 20Preparatory (007-011-000) ............................................................................................................................................................. 19Remove (007-011-002) .................................................................................................................................................................. 20

Lubricating Oil Filter (Spin-On) (007-013) .................................................................................................................................................. 21Install (007-013-026) ...................................................................................................................................................................... 21Remove (007-013-026) .................................................................................................................................................................. 21

Lubricating Oil Pan (007-025) ..................................................................................................................................................................... 22Clean (007-025-006) ...................................................................................................................................................................... 22Drain (007-025-005) ....................................................................................................................................................................... 22Fill (007-025-028) ........................................................................................................................................................................... 24Inspect for Reuse (007-025-007) ................................................................................................................................................... 23Install (007-025-026) ...................................................................................................................................................................... 23Remove (007-025-002) .................................................................................................................................................................. 22

Lubricating Oil Pressure Regulator (Main Rifle) (007-029) ...................................................................................................................... 25Clean (007-029-006) ...................................................................................................................................................................... 25Inspect for Reuse (007-029-007) ................................................................................................................................................... 26Install (007-029-026) ...................................................................................................................................................................... 26Remove (007-029-002) .................................................................................................................................................................. 25

24 Valve, 8.3 Liter EnginePage b Lubricating Oil System


Lubricating Oil Pump (007-031) .................................................................................................................................................................. 26Inspect for Reuse (007-031-007) ................................................................................................................................................... 27Install (007-031-026) ...................................................................................................................................................................... 30Measure (007-031-010) ................................................................................................................................................................. 29Preparatory (007-031-000) ............................................................................................................................................................ 26Remove (007-031-002) .................................................................................................................................................................. 27

Lubricating Oil Suction Tube (Block-Mounted) (007-035) ........................................................................................................................ 33Clean (007-035-006) ...................................................................................................................................................................... 33Fill (007-035-028) ........................................................................................................................................................................... 35Inspect for Reuse (007-035-007) ................................................................................................................................................... 34Install (007-035-026) ...................................................................................................................................................................... 34Preparatory (007-035-000) ............................................................................................................................................................ 33Remove (007-035-002) .................................................................................................................................................................. 33

Lubricating Oil Thermostat (007-039) ........................................................................................................................................................ 35Inspect for Reuse (007-039-007) ................................................................................................................................................... 35Install (007-039-026) ...................................................................................................................................................................... 36Remove (007-039-002) .................................................................................................................................................................. 35

Lubricating Oil Pressure Sensor (007-052) ............................................................................................................................................... 37Inspect for Reuse (007-052-007) ................................................................................................................................................... 37Install (007-052-026) ...................................................................................................................................................................... 37Remove (007-052-002) .................................................................................................................................................................. 37

Specifications .............................................................................................................................................................................................. 12Lubricating Oil System ................................................................................................................................................................... 12

24 Valve, 8.3 Liter Engine Lubricating Oil System - General InformationLubricating Oil System Page 1


Lubricating Oil System - General Information

� WARNING �Some state and federal agencies in the United Statesof America have determined that used engine oil canbe carcinogenic and can cause reproductive toxicity.Avoid inhalation of vapors, ingestion, and prolongedcontact with used engine oil.

� WARNING �Avoid direct contact of hot oil with your skin. Hot oilcan cause personal injury.

CDC recommends the use of a high quality SAE 15W-40heavy duty engine oil which meets the American Petro-leum Institute (API) performance classification CE/SG.

APi grade CG-4/CF-4 engine oils can be used in areaswhere CE oil is not yet available, but the lubricating oilchange interval must be reduced to 1/2 of the interval giv-en in the maintenance schedule.

� CAUTION �Limited use of low viscosity lubricating oils, such as10W-30, can aid in starting the engine and providingsufficient lubricating oil flow at ambient temperaturesbelow -5°C [23°F]. However, the continuous use of lowviscosity lubricating oils can decrease engine life. Re-fer to the accompanying chart.

Diagnosing Lubricating System Malfunctions

When diagnosing lubrication system malfunctions, checkall obvious items related to oil pressure, such as gauges;high and low oil level; excessive oil contamination; and oilviscosity.

Lubricating Oil System - General Information 24 Valve, 8.3 Liter EnginePage 2 Lubricating Oil System


High Lubricating Oil Pressure

High oil pressure usually occurs after the engine is firststarted in cold weather. Cold start oil pressure typicallywill be approximately 827 to 1034 kPa [120 to 150 psi]. Ifthe pressure regulator plunger is operating properly, thenthe oil pressure should drop back to approximately 449kPa [65 psi] when normal operating temperature isreached.

Lubricating Oil Pressure Regulating Valve

The engine will have high oil pressure at the normal oper-ating temperature if the regulator sticks in the closed po-sition. Check the regulator for freedom of movement.Refer to Procedure 007-029.

Low Lubricating Oil Pressure

Low lubricating oil pressure (or no oil pressure) can becaused by several lubrication system related malfunc-tions. To begin the investigation, determine the engine op-erating conditions when the low pressure was firstobserved; for example, following a service interval, at idleonly, while operating on a steep grade.

Lubricating Oil Level

High oil level can cause low oil pressure. If the oil level ishigh enough for the connecting rods to dip into during op-eration, the oil can become aerated. This will result in lowoil pressure and high engine temperature.



Low lubricating oil level will not normally appear as low oilpressure. Typically, it will appear as an intermittent loss ofoil pressure when rounding a corner or operating on asteep grade. This condition exists when the oil level is ex-tremely low and the suction tube can not pick up oil duringall modes of operation.

Lubricating Oil Filter

A plugged filter will cause a gradual loss of oil pressure byapproximately 69 kPa [10 psi]. The pressure will return tonormal when the filter bypass valve opens. If not correct-ed, this will result in severe engine wear, as the engine isrunning on unfiltered oil when the bypass valve is open.

Lubricating Oil Gauge

Check the lubricating oil gauge and sending unit to makesure they are operating correctly by verifying the pressurewith a manual gauge.

Lubricating Oil Suction Tube

A loose suction tube, damaged gasket, or crack in the suc-tion tube can cause a temporary loss of prime for the oilpump. The engine will have low pressure or no oil pres-sure at starting, followed by normal oil pressure.



Bearings and Lubricating Oil Pump

A steady decrease in oil pressure over a long period oftime can be an indication of worn bearings or excessive oilpump wear.

Lubricating Oil Dilution

� CAUTION �Diluted oil can cause severe engine damage.

Check the condition of the lubricating oil.

• Thin, black lubricating oil is an indication of fuel in the oil.

• Milky discoloration is an indication of coolant in the lubricating oil.

Coolant in the oil can be caused by:

• Expansion plugs that are leaking• Lubricating oil cooler element that is leaking• Damaged cylinder head or gasket• Cracked engine block • Casting porosity.

•

Coolant Diluted Lubricating Oil

Since the lubricating oil cooler design does not requiregaskets or seals to maintain the separation of oil and cool-ant, the element itself must leak to allow mixing of the flu-ids. Refer to Procedure 007-003.



During operation, the lubricating oil pressure will be higherthan coolant pressure. A leak in the lubricating oil coolerwill appear as lubricating oil in the coolant.

However, following an engine shutdown, the residualpressure in the coolant system can cause coolant to seepthrough the leak path into the lubricating oil.

To check for leaks, pressurize the cooling system to 140kPa [20 psi]. With the system pressurized, remove the fol-lowing components and inspect for leaks:

• Valve covers (leaks indicate cracked head).• Lubricating oil drain plug (leaks indicate defective

lubricating oil cooler, head gasket, cracked head, or block).

Coolant in the lubricating oil can be caused by a damagedcylinder head gasket or cracked cylinder head or block.

Remove the cylinder head and gasket, and inspect forcracks or damage. Refer to Procedure 002-004.

Fuel Diluted Lubricating Oil

Use the following logic to determine the source of the oildilution with fuel.

Fuel dilution is limited to three sources:

• Injection pump cam housing• Fuel leaking by the rings• Injector leakage.

A cracked cam housing can cause fuel to leak into thegear housing and then into the lubrication oil pan.



Incomplete combustion in the cylinders can result in un-burned fuel draining into the oil pan.

This condition can be caused by a leaking injector or re-duced compression caused by inadequate piston ringsealing.

An increase in white exhaust smoke during the first startof the day is a symptom that an injector is leaking.

An injector leak will also cause the engine to run roughand have low power.Remove, repair, or replace leaking injectors. Refer to Pro-cedure 006-026, for test and repair instructions.

Lubricating Oil Leaks

Various gaskets, seals, and plugs are used to contain thelubricating oil. Most leaks can be identified during routineinspection of the engine and vehicle.

A blown expansion plug can allow a relatively large quan-tity of lubricating oil to escape, resulting in a sudden dropin the lubricating oil pressure.

When checking for such a leak, be sure to check all ex-pansion plugs that may be obscured by chassis parts.

Lubricating oil blowing out of the breather is a sign of ablown expansion plug.



If the lubricating oil cooler element ruptures, the lubricat-ing oil pressure may force lubricating oil into the coolingsystem. Lubricating oil in the coolant should be visiblewhen the radiator cap is removed. Refer to Procedure007-003.

Worn or damaged seals in the turbocharger can also allowlubricating oil to leak into the air crossover pipe and beburned in the engine.

The condition can be verified by removing the air cross-over tube or charge air cooler tubing and looking for oil.

Inadequate sealing of the piston rings will result in lubri-cating oil being blown out the breather tube and/or con-sumed by the engine. Refer to Procedure 014-002.

Lubricating oil can also be lost through a worn or malfunc-tioning air compressor. Look for carbon build-up in the airline from the compressor to the air tank. Also, a failed aircompressor head or head gasket can allow oil to leak intothe coolant, or coolant to leak into the oil, during hot shut-down.

Flow Diagram, Lubricating Oil System 24 Valve, 8.3 Liter EnginePage 8 Lubricating Oil System


Flow Diagram, Lubricating Oil System

1. Gerotor Lubricating Oil Pump2. Pressure Regulating Valve Closed3. Pressure Regulating Valve Open4. From Lubricating Oil Pump 5. To Lubricating Oil Cooler6. To Lubricating Oil Pump7. Lubricating Oil Cooler8. Filter Bypass Valve9. Filter Bypass Valve Closed10. Filter Bypass Valve Open11. To Lubricating Oil Filter12. Full Flow Lubricating Oil Filter13. From Lubricating Oil Filter14. Main Lubricating Oil Rifle

24 Valve, 8.3 Liter Engine Flow Diagram, Lubricating Oil SystemLubricating Oil System Page 9


Lubrication for the Turbocharger

1. Lubricating Oil Filter2. Turbocharger Lubricating Oil Supply3. Turbocharger Lubricating Oil Drain4. To Main Lubricating Oil Rifle

Flow Diagram, Lubricating Oil System 24 Valve, 8.3 Liter EnginePage 10 Lubricating Oil System


Lubrication for the Power Components

1. From Lubricating Oil Cooler2. Main Lubricating Oil Rifle3. To Camshaft4. From Main Lubricating Oil Rifle5. To Piston Cooling Nozzle6. To Connecting Rod Bearing

24 Valve, 8.3 Liter Engine Flow Diagram, Lubricating Oil SystemLubricating Oil System Page 11


Lubrication for the Overhead

1. From Cam Bushings2. Transfer Slot3. Rocker Lever Support4. Rocker Lever Shaft5. Rocker Lever Bore6. Rocker Lever

Specifications 24 Valve, 8.3 Liter EnginePage 12 Lubricating Oil System


Specifications

Lubricating Oil SystemOil Pressure:

at Low Idle (Minimum Allowable)................................................................................................ 69 kPa [10 psig]at Rated Speed (Minimum Allowable) ...................................................................................... 207 kPa [30 psig]

Regulated Pressure .......................................................................................................................... 517 kPa [75 psi]

Oil Capacity Of Standard Engine:Standard Oil Pan

Pan Only ................................................................................................................................. 18.9 liters [20 qts] Total System Capacity with Filter ...................................................................................................... 21 liters [22 qts]

Some applications may use a slightly different oil pan capacity. Refer to the Machine Operators Manual.

24 Valve, 8.3 Liter Engine Engine Oil Heater (007-001)Lubricating Oil System Page 13


Engine Oil Heater (007-001)

Preparatory (007-001-000)� WARNING �

Some state and federal agencies in the United Statesof America have determined that used engine oil canbe carcinogenic and can cause reproductive toxicity.Avoid inhalation of vapors, ingestion, and prolongedcontact with used engine oil.


Drain the lubricating oil. Refer to Procedure 007-025.

Remove (007-001-002)

Disconnect the oil heater electrical cord and remove theheater element.

Remove the heater element

Install (007-001-026)

Ratchet, 1-Inch Deep Well Socket, Torque Wrench

Replace the heater element.

Torque Value: 120 N•m [88 ft-lb]

Refill the engine to the correct oil level. Refer to the Vehi-cle Operators Manual.

Connect oil heater electrical cord.

Lubricating Oil and Filters (007-002)

Inspect (007-002-062)

An analysis of used oil can help diagnose internal enginedamage and determine if it was caused by one of the fol-lowing:

• Intake air filter malfunction• Coolant leaks• Oil diluted with fuel• Metal particles causing wear.

Lubricating Oil Cooler (007-003) 24 Valve, 8.3 Liter EnginePage 14 Lubricating Oil System


NOTE: Do not take apart an engine for repair based sole-ly on the results of an oil analysis. Inspect the oil filters. Ifthe oil filter shows evidence of internal damage, find thesource of the problem and repair the damage. Refer to theappropriate procedure(s) based on the following oil filterinspection.

� CAUTION �Restrain the full flow lubricating oil filter and carefullycut the filter (upper section of combo filter) open. Thefilter element spring is under compression and cancause personal injury.

Inspect the filter element for evidence of moisture or metalparticles.

Lubricating Oil Cooler (007-003)

Preparatory (007-003-000)

� WARNING �Coolant is toxic. Keep away from pets and children. Ifnot reused, dispose of in accordance with local envi-ronmental regulations.

� WARNING �Wait until the temperature is below 50°C [120°F] toavoid personal injury from hot coolant.

Drain the coolant. Refer to Procedure 008-018.

Metal Possible SourceCopper Bearings and BushingsChromium Piston RingsIron Cylinder LinersLead Bearing Overlay MaterialAluminum Piston Wear or Scuffing

24 Valve, 8.3 Liter Engine Lubricating Oil Cooler (007-003)Lubricating Oil System Page 15


Remove (007-003-002)

Clean around the lubricating oil cooler cover.

Remove the lubricating oil filter.

16 mm, 19 mm

Disconnect the turbocharger lubricating oil supply line.

10 mm

Remove the lubricating oil cooler cover, gaskets and cool-er element.

Lubricating Oil Cooler (007-003) 24 Valve, 8.3 Liter EnginePage 16 Lubricating Oil System


Clean (007-003-006)

Clean the sealing surfaces.

Leak Test (007-003-014)

Pressure test the element to check for leaks. If leaks aredetected, replace the element.

Assemble the lubricating oil cooler gaskets, element andcover.


NOTE: Be sure to remove the shipping plugs from the el-ement.

Connect the turbocharger lubricating oil supply line.


Air Pressure TestkPa psi449 MIN 65518 MAX 75

24 Valve, 8.3 Liter Engine Lubricating Oil Cooler (007-003)Lubricating Oil System Page 17


Fill the filter with clean lubricating oil and apply a thin coatof oil to the sealing gasket. Refer to the operators manualfor lubricating oil recommendation.

Install the lubricating oil filter. Refer to Procedure 007-013.

Fill the coolant system and operate the engine to check forleaks.

Stop the engine and check the coolant and lubricating oillevel.

Install (007-003-026)10 mm

Assemble the lubricating oil cooler gaskets, element andcover.


NOTE: Be sure to remove the shipping plugs from the el-ement.

16 mm, 19 mm

Connect the turbocharger lubricating oil supply line.

Lubricating Oil Dipstick (007-009) 24 Valve, 8.3 Liter EnginePage 18 Lubricating Oil System


Fill the filter with clean lubricating oil and apply a thin coatof clean oil to the sealing gasket. Refer to the operatorsmanual for lubricating oil recommendation.

Install the lubricating oil filter. Refer to Procedure 007-013.

Fill the coolant system and operate the engine to check forleaks.

Stop the engine and check the coolant and lubricating oillevel.

Lubricating Oil Dipstick (007-009)

Calibrate (007-009-030)

� WARNING �Some state and federal agencies in the United Statesof America have determined that used engine oil canbe carcinogenic and can cause reproductive toxicity.Avoid inhalation of vapors, ingestion, and prolongedcontact with used engine oil.



Install the dipstick in the dipstick tube housing.

Use clean 15W-40 oil to fill the oil pan to the specified“LOW” oil level. Refer to the operators manual for the cor-rect engine oil capacity.

24 Valve, 8.3 Liter Engine Lubricating Oil Dipstick Tube (007-011)Lubricating Oil System Page 19


� CAUTION �Use care when marking the dipstick. The dipstick willbreak if the scribe mark is too deep.

Remove the dipstick and scribe a mark across the stick atthe oil level. Label the mark with an “L” to indicate the“LOW” oil level.

NOTE: If a new blank dipstick is being used, cut the dip-stick off approximately 38 mm [1.5 in] below the “LOW” oillevel mark.

Wipe off the dipstick and install it in the dipstick tube hous-ing.

Fill the oil pan to the specified “HIGH” oil level. Refer to theoperators manual for engine oil capacity.

Remove the dipstick and scribe a mark across the stick atthe oil level. Label the mark with a “H” to indicate the“HIGH” oil level.

Lubricating Oil Dipstick Tube (007-011)


Clean the area around the dipstick tube before removingto prevent debris from entering the oil system.

Lubricating Oil Dipstick Tube (007-011) 24 Valve, 8.3 Liter EnginePage 20 Lubricating Oil System


Remove (007-011-002)

Remove dipstick from the dipstick tube.

Remove dipstick tube from the cylinder block.

Service Tip: Use a dent puller and a M8 x 1.25 x 21 mmself-tapping capscrew. Thread the capscrew into the dip-stick tube and remove the tube.

Install (007-011-026)

Apply a thin bead of Loctite™ 277, or equivalent, aroundthe bottom of the knurled end of the tube.

Place knurled end of tube into the dipstick tube bore in thecylinder block.

Use a flat washer and hex head capscrew to drive the tubeinto the cylinder block.

Lightly drive the dipstick tube until it seats against theblock casting.

Install dipstick into the dipstick tube.

24 Valve, 8.3 Liter Engine Lubricating Oil Filter (Spin-On) (007-013)Lubricating Oil System Page 21


Lubricating Oil Filter (Spin-On) (007-013)

Remove (007-013-026)

Clean the area around the lubricating oil filter head.

Remove the filter.

Clean the gasket surface of the filter head.

Install (007-013-026)

Use clean 15W-40 oil to coat the gasket surface of the fil-ter.

� CAUTION �Lubrication oil filter should be full of oil at startup toprevent engine damage.

Fill the filter with clean 15W-40 oil.

� CAUTION �Mechanical overtightening of the filter can distort thethreads or damage the filter element seal.

Install the filter on the oil filter head. Tighten the filter untilthe gasket contacts the filter head surface.

Tighten the filter. Refer to the instructions supplied withthe filter.

Operate the engine and check for leaks.

NOTE: Engine oil pressure must be indicated on thegauge within 15 seconds after starting. If oil pressure isnot registered within 15 seconds, shut off the engine im-mediately to avoid engine damage. Confirm that the oilpan has the correct oil level.

Lubricating Oil Pan (007-025) 24 Valve, 8.3 Liter EnginePage 22 Lubricating Oil System


Lubricating Oil Pan (007-025)

Drain (007-025-005)

17 mm� WARNING �

Some state and federal agencies in the United Statesof America have determined that used engine oil canbe carcinogenic and can cause reproductive toxicity.Avoid inhalation of vapor, ingestion, and prolongedcontact with used engine oil.

� WARNING �Hot oil can cause serious personal injury.

Use a container that can hold at least 20.1 liters [22 U.S.qts] of lubricating oil.

Operate the engine until the coolant temperature reaches60°C [140°F]. Shut off the engine. Remove the oil drainplug. Drain the oil immediately to make sure all the oil andsuspended contaminants are removed from the engine.

Remove (007-025-002)

10 mm

Remove the lubricating oil pan and gasket.

If suction tube must be removed, Refer to Procedure 007-035.

Clean (007-025-006)

Remove all gasket material from the cylinder block and oilpan surface.

Steam clean the oil pan.

Dry with compressed air.

24 Valve, 8.3 Liter Engine Lubricating Oil Pan (007-025)Lubricating Oil System Page 23


Inspect for Reuse (007-025-007)

Inspect the oil pan, suction tube, and tube braces for dam-age.

NOTE: If cracks are found, replace the damaged part. Donot attempt to repair the oil pan by welding.

If the suction tube must be replaced, Refer to Procedure007-035.

Install (007-025-026)

Use Three Bond™ RTV sealant, or equivalent, to fill thejoints between the lubricating oil pan rail, gear housing,and rear seal housing.

If the suction tube has been removed, Refer to Procedure007-035 for installation instructions.

10 mm

Apply a 2 mm [1/16 in] bead of Three Bond™ Sealant toboth sides of the new lubricating pan gasket.

Install the gasket and lubricating oil pan.

10 mm

Assemble the washers and capscrews to secure the lubri-cating oil pan as illustrated.

Tighten all capscrews in the sequence shown in the ac-companying chart.


Lubricating Oil Pan (007-025) 24 Valve, 8.3 Liter EnginePage 24 Lubricating Oil System


17 mm

Clean and check the lubricating oil drain plug threads andsealing surface.

Install the lubricating oil pan drain plug.


Fill (007-025-028)

Use a high quality 15W-40 multiviscosity oil in CDC en-gines. Choose the correct oil for your operating climate asoutlined in the Vehicle Operation and Maintenance Manu-al.

Fill the engine with clean lubricating oil to the proper level.

When filling the oil pan, use the fill tube on the side of theengine rather than on top of the rocker lever cover.

Idle the engine to inspect for leaks at the drain plug.

NOTE: Engine oil pressure must be indicated on thegauge within 15 seconds after starting. If oil pressure isnot registered within 15 seconds, shut off the engine im-mediately to avoid engine damage. Confirm that oil hasbeen filled to the correct level in the oil pan.

24 Valve, 8.3 Liter Engine Lubricating Oil Pressure Regulator (Main Rifle) (007-029)Lubricating Oil System Page 25


Shut off the engine. Wait approximately 10 minutes to letthe oil drain from the upper parts of the engine. Check thelevel again.

Add oil as necessary to bring the oil level to the H (high)mark on the dipstick.

Lubricating Oil Pressure Regulator (Main Rifle)(007-029)

Remove (007-029-002)

Thoroughly clean the area around the pressure regulatorplug with clean solvent to prevent debris from falling intothe plunger bore when the plug is removed.

19 mm

Remove the threaded plug, spring, and plunger.

Service Tip: The plunger normally can be removed by in-serting one finger into the plunger bore until snug and pull-ing up. If the plunger can not be removed in this manner,the plunger is probably stuck and will require removal ofthe housing for cleaning the plunger.

Clean (007-029-006)

� CAUTION �Compressed air used for cleaning should not exceed207 kPa [30 psi]. Use only with personal protectiveequipment (goggles/shield, gloves, etc.).

Thoroughly clean all components with clean solvent.


If the plunger bore requires cleaning, remove the housingto avoid flushing debris into the engine.

Lubricating Oil Pump (007-031) 24 Valve, 8.3 Liter EnginePage 26 Lubricating Oil System



Inspect the plunger and plunger bore. Polished areas onthe plunger and bore are acceptable.

Verify that the plunger moves freely in the bore.

Install (007-029-026)

19 mm

Install a new sealing o-ring on the threaded plug and lubri-cate with clean engine oil. Install the pressure regulatorassembly.


Lubricating Oil Pump (007-031)


Remove the drive belt. Refer to Procedure 008-002.

24 Valve, 8.3 Liter Engine Lubricating Oil Pump (007-031)Lubricating Oil System Page 27


Remove (007-031-002)

15 mm

Remove the vibration damper. Refer to Procedure 001-051 or 001-052.

10 mm

Remove the front cover. Refer to Procedure 001-031.

13 mm

Remove the four mounting capscrews.

Remove the pump from the bore in the cylinder block.


If the lubricating oil pump is to be inspected for reuse, fol-low these steps.

Inspect the lubricating oil pump gears for chips, cracks, orexcessive wear.



Remove the back plate.

NOTE: The 24 Valve 8.3 Liter Engine lube oil pump usesa large diameter 5/6 rotor set. The graphics in this manualillustrates a 4/5 rotor set.

Mark “TOP” on the gerotor planetary.

Remove the gerotor planetary.

Inspect for excessive wear or damage.

Clean all parts in solvent.




Inspect the lubricating oil pump housing and gerotor drivefor damage and excessive wear.

� CAUTION �Make sure that the gerotor planetary is installed in theoriginal position.

Install the gerotor planetary.

Measure (007-031-010)

Measure the tip clearance.

Measure the clearance of the gerotor drive/gerotor plane-tary to port plate.

Tip Clearancemm in

0.025 MIN 0.0010.1778 MAX 0.007

Gerotor Clearancemm in

0.025 MIN 0.0010.127 MAX 0.005



Measure the clearance of the gerotor planetary to thebody bore.

Measure the backlash.

Install (007-031-026)

Install the back plate.

� CAUTION �Failure to fill the pump with oil during installation canresult in a failure of the lube oil pump to prime at ini-tial engine start-up, resulting in severe engine dam-age.

Lubricate the lubricating oil pump with clean 15W-40 en-gine oil.

Limitmm in

0.1778 MIN 0.0070.381 MAX 0.015

Limits (Used Pump)mm in

0.076 MIN 0.0030.330 MAX 0.013



� CAUTION �Make sure the idler gear pin is installed in the locatingbore in the cylinder block.

Install the lubricating oil pump.

13 mm

Tighten capscrews in an X pattern starting with the upperright capscrew.


NOTE: Be sure the gear backlash is correct if installing anew lubricating oil pump.

Measure the gear backlash.

If the adjoining gear moves when you measure the back-lash, the reading will be incorrect.

Lubricate the front gear train with clean 15W-40 engineoil.

Backlash Limits mm in

A 0.076 MIN 0.0030.330 MAX 0.013

B 0.076 MIN 0.0030.330 MAX 0.013



� CAUTION �The seal lip and the sealing surface on the crankshaftmust be free from all oil residue to prevent seal leaks.

Thoroughly clean the front seal area of the crankshaft.

Always replace the front seal when removing and install-ing the gear cover. Refer to Procedure 001-031.

10 mm

Install the front cover on the engine. Refer to Procedure001-031.

15 mm

Install the vibration damper. Do not tighten the capscrewsto the correct torque value at this time. Refer to Proce-dures 001-051 or 001-052.

1/2-Inch Square Drive

Raise the belt tensioner to install the belt. Refer to Proce-dure 008-002.

24 Valve, 8.3 Liter Engine Lubricating Oil Suction Tube (Block-Mounted) (007-035)Lubricating Oil System Page 33


15 mm

Tighten the vibration damper. Refer to Procedure 001-051or 001-052.


Lubricating Oil Suction Tube (Block-Mounted) (007-035)



Remove the lubricating oil pan and gasket. Refer to Pro-cedure 007-025.

Remove (007-035-002)

10 mm

Remove the lubricating oil suction tube.

Clean (007-035-006)

Clean the gasket surfaces.

Lubricating Oil Suction Tube (Block-Mounted) (007-035) 24 Valve, 8.3 Liter EnginePage 34 Lubricating Oil System



Inspect the suction tube for cracks.

Install (007-035-026)

10 mm

Install the lubricating oil suction tube and new gasket.


Use Three-Bond™ 1207-C, or equivalent, to fill the jointsbetween the lubricating oil pan rail, gear housing, and rearseal housing.

10 mm

Install the lubricating oil pan and gasket.


24 Valve, 8.3 Liter Engine Lubricating Oil Thermostat (007-039)Lubricating Oil System Page 35


17 mm

Install the lubricating oil pan drain plug.


Fill (007-035-028)

Fill the engine with lubricating oil. Refer to the operatorsmanual for lubricating oil specification.

Operate the engine and check for leaks.

Stop the engine and check the lubricating oil level with thedipstick.

Lubricating Oil Thermostat (007-039)

Remove (007-039-002)

32 mm

Remove the oil temperature thermostat.


Inspect for a damaged o-ring, broken spring or other dam-age.

Lubricating Oil Thermostat (007-039) 24 Valve, 8.3 Liter EnginePage 36 Lubricating Oil System


� CAUTION �The flash point of new lubricating oil is approximately221°C [430°F]. Do not allow oil temperature in the con-tainer to exceed 150°C [300°F]. Do not allow waterdroplets to enter the container of hot oil. Water drop-lets will cause a violent reaction which can cause per-sonal injury.

Suspend the thermostat and a 116°C [240°F] thermome-ter in a container of new lubricating oil. Do not allow thethermostat or the thermometer to touch the sides of thecontainer.

Heat the lubricating oil.

NOTE: Write down the temperature at which the thermo-stat is fully extended. The thermostat must be fully ex-tended at least 45.9 mm [1.80 in] when the temperaturereaches 104°C [220°F] or 116°C [240°F] depending onwhat temperature the thermostat is rated.

Replace the thermostat if it does not operate as de-scribed.

Install (007-039-026)

Install the oil temperature thermostat.


24 Valve, 8.3 Liter Engine Lubricating Oil Pressure Sensor (007-052)Lubricating Oil System Page 37


Lubricating Oil Pressure Sensor (007-052)

Remove (007-052-002)

Disconnect the wire from the sending unit.


Remove the oil pressure sensor and install a pressuregauge.

Start the engine and measure the lubricating oil pressure.Minimum lubricating oil pressure:

Low Idle (675 to 725 rpm): 69 kPa [10 psi]

High Idle: 207 kPa [30 psi]

The oil pressure sensor switch is set to actuate when oilpressure drops to 55 kPa [8 psi].

Install (007-052-026)

Install the sending unit.

Connect the wire to the sending unit.

Torque Value:Installed into Cast Iron

16 N•m [12 ft-lb]

Installed into Alumi-num

10 N•m [7 ft-lb]

Lubricating Oil Pressure Sensor (007-052) 24 Valve, 8.3 Liter EnginePage 38 Lubricating Oil System


Section 10 Chapter 14 · 24 Valve, 8.3 Liter Engine Lubricating Oil System - General Information...

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Transcript of Section 10 Chapter 14 · 24 Valve, 8.3 Liter Engine Lubricating Oil System - General Information...