•For engines up to 475 hp (354 kW) gross

Allison Transmissions automatic models CL(B)T 750 CL(B)T 750(08)

475 hp* (354 kW}*

rotation Straight through and Input-right hand Output-right hand in forward J drop box models (viewed from input) ranges (viewed from input)

1J Straight Through Model Drop Box Model & Drop Box (General)' Scraper Applications

Input power, max (net) 425 HP (317 kW) 300 HP (224 kW) rating Input speed, max 2500 RPM 2500 RPM

Input torque, max (net) 1300 lb. It. (1762 N ·m) n5 tb. tr. (1051 N·m) 'Except where disconnects are used.

Direct mounted SAE 1 tlywheel housing wilh flex disk drive & one 4-hole SAE mounting pad on each side of rear

mounting adapter housing or s-nore SAE drop box mounting pads.

Remote mounted Trunnion front mountwith one 4-hole SAE mounting pad on each side of rear adapter housing or s-bore SAE drop box mounting pads.

Type Single stage, polyphase, 3-element I

Available torque converter TC-470-3.04 TC-497-2.70 .. models and ratios TC-490-2.46 TC-498-2.35 ..

I TC-495-2.21' TC-499-2.13'

torque converter Variable capacity converter VTC-497-2.42 (Open) 1.84:1 (Closed} Lockup clutch Effective in all forward ranges or 2nd through

5th ranges (optional). "Available in drop box model only

.. Available in straight through model only

hydraulic retarder Type Coupling type rotor between fixed stators (optional) Capacity 365 HP (272 kW) absorption @ 2100 RPM rotor speed

drop box disconnects Disconnects are available at all three (optional) locations: B, C and D

Type Constant mesh, spur type planetary

Standard Alternate Straight Through & Drop Box

Gear ratios' Drop Box Models Model Onl)'.

First 5.18 7.97 ' Second 3.19 3.19

' gearing Third 2.02 2.02 Fourth 1.38 1.38 Fifth 1.00 1.00 Reverse 4.72 4.72 Transfer Gear 1.00 1.00

'Does not Include torque converter ratios. ,

clutches Hvdraullcally-actuated, spring-released, oil cooled, multidlsk, self-adjusting (automatic compensation for wear)

specifications

pa.rklng brake• Type Drum, internal expanding shoe Size 12 x 5 in. (305 x 127 mm)

Engine driven (2) One on lop and one on left side of converter housing Location at 7 o'clock position as viewed from output

Size of opening SAE s-bolt

Ratio Top- l .35 x engine speed Side-0.84 x engine speed '

Rating (2100-2500 RPM)

Each PTO opening lntermlltent-260 HP (194 kW) power takeoff' Continuous-200 HP {149 kW)

(optional) Combined 400 HP (298 kW)

Converter driven (1) Top, left side of main housing at 1 O o'clock Location position as viewed lrom output

Size of opening SAE s-oort Ratio 1.00 x turbine speed (all ranges}

Rating lntermiltent-250 lb. It. (339 N•m) Continuous-200 lb. tt, (281 Nern)

speedometer drive• Type s-tocrn spiral drive gear (not available on drop SAE heavy duty box model)

Type Hydraulically controlled valve body with manual shift control valve body from first to second and automatic range selection

above second with hold feature in any range.

shift modulation External control Mechanical'

Transmission Straight-Through Model Drop Box Model

011 type Hydraulic transmission Hydraulic transmission fluid type C-3 fluid type C-3

Capaclly (lass 7.0 U.S. Gal. 7.0 U.S. Gal. oil system external lines) (26.5 liters) (26.5 liters)

Sump Integral Integral

Filter• External, remote mounted External, remote mounted Drop box

Capacity 1.0 U.S. Gal. (3.8 liters}

Oil type 30 Weight, C-3

Straight Through Model !)rop Box Model

Length (Engine mount) 47.8 in (1214 mm) 55.8 in. (1417 mm) (Remote mount} 54.61 In .. (1387 mm) 62.5 in. (1590 mm)

size Width 24.5 In (622 mm) 24.5 in. (622 mm)

Height 26.1 in (665 mm) 37.7 in. (958 mm)

Weight (dry) 1175 I b. ( 533 kg)( approx) 1675 lb. (760.7 kg) (approx.)

*Not supplied on transmission but is supplied by vehicle manufacturers. NOTE: All data and specifications subject to change without notlce.

specifications

• Hydraulic retarder with modulation (optional) • Mechanical shift modulation control • Multidisk, self-adjusting hydraulic clutches • Provision for engine-driven and/or converter

driven power takeoff • Inhibitors to prevent harmful downshifts or

reverse shifts

• For diesel engines up to 475 hp (354 kW) • Transmission remote mounted or direct mounted

on engine • Five forward gear ranges, one reverse • Automatic upshitting and downshifting in all

ranges above second with hold in each range

Note: Dimensions are given In lncnes with metric value In parentheses.

SID

TRANSMISSION OUTPUT (LOWER)

CENTERLINE DRAIN AND DIPSTICK

PROVISION

FRONT VIEW

"C" F

design features

HYDRAULIC RETARDER

DIRECT MOUNT

IBASEIF 469- LINE (1190.mm) - 4.0

(102 mm)

REMOTE 26.3 MOUNT

(600 mm}

TRANSMISSION OUTPUT (UPPER)

CENTERLINE

0 ROP BOX MODEL

HYDRAULIC RETARDER

FRONT TRUNNION MOUNT

"-~----1---1~0--.8 ~ TO COOLER (274 mm)

FRONT VIEW

FROM FIL TEA +----ilr--...:

DIRECT MOUNT

TO FILTER TRANSMISSION -r---41--.J MOUNTING PAD (BOTH SIDES)

I REMOTE MOUNT

STRAIGHT THROUGH MODEL

6 10.3 10.3 r "'~m=m:;)~f!.---(262 mm)

11.5 (292 mm)

6.8 -i------"-- BASE LINE (173mm)

mounting dimensions

Variable input capacity converter

:>revision tor neutral start switch; reverse signal switch; SAE heavy-duty speedometer drive; drum­ type parking brake

r • Optional drop box configuration • Five optional transfer gear housing positions

(see rear view with drop box) • Output disconnects available in three locations on

the dropbox model (flange positions B, C, and D) • Optional manual automatic controls

• Choice of converters to match wide range of diesel engines

OPTIONAL TRANSFER GEAR HOUSING POSITIONS

REAR VIEW JEW

PROVISION FOR CUSTOMER

FURNISHED PARKING BRAKE "D"

POSITION

@

20 (508 mm)

"B" POSITION

[-----------~ 1m)

11.0-:---+--- 8.5 (279 mm) J (216 mm)

REAR VIEW

6.8 REQUIRED TO (173 mm) REMOVE OIL PAN

MANUAL CONTROL SHAFT : SIDE VIEW - _J

15.6 (396mm)

.0 mm)

CONVEATEA-0 RIVEN POWER TAK EOFF

MOUNTING

RETARDER CONTROL

VALVE

REQUIRED TO REMOVE GOVERNOR

6.3 --1----.i (160 mm)

~ '7.7 -~-----------~ l mm)

(58,968 kg) GVW. It is adaptable to diesel engines up to 475 horsepower (354 kW) and may be remote or direct mounted to the engine.

The GL(B)T 750 has five forward ranges and one reverse, wlth automatic shitting occurring in second through fifth range. This automatic operation permits maximum performance, as vehicle speed and load

The CL(B)T 750 transmission is designed for use in off-highway operations such as heavy-duty rear dump trucks up to 135,000 pounds (61,236 kg) GVW­ logging trucks, refuelers, and special equipment trucks up to 200,000 pounds (90,720 kg} GCW, for si ng\e engine scrapers up to 110,000 pounds (50,349 kg} GVW, and for twin scrapers up to 130,000 pounds

CL(B)T 750 CONTROL VALVE BODY

CONVERTER-DRIVEN POWER TAKEOFF

DRIVE GEAR

,

FIRST (LOW) CLUTCH FORWARD CLUTCH

FOURTH CLUTCH

ENGINE-DRIVEN POWER TAKEOFF

DRJVE GEAR

CL(B)T 750 automatic transmission

a hydraulic retarder which provides greater downhill braking control and reduces the wear on the service brakes. There are also provisions for engine-driven, and/or converter-driven power takeoffs. The CL(B)T 750 and CL(B)T 750(08) are capable of satisfying virtually ail auxiliary drive and power takeoff requirements.

demand change, with little effort on the part of the vehicle operator. Built-in inhibitors prevent harmful downshifts or reverse shifts at any significant speed.

This automatic transmission is offered in straight through and dropbox versions. The dropbox can be located in five radial positions on the transmission. Other options offered with this transmission include

CL(B)T 750(08)

LOCKUP CLUTCH

SECOND AND REVERSE CLUTCH

HYDRAULIC RETARDER

TORQUE CONVERTER

FORWARD CLUTCH

CL(B)T 750(08) automatic transmission

Litho in U.S.A. SA 13888 8- 77

~ Detroit Diesel Allison ~ Division of General Motors Corporation

Indianapolis, Indiana 46206

moves, the angle of the stator vane changes. The piston movement is controlled by a va!ve which directs high pressure oil against one side of the piston, acting against a constant low pressure oil applied to the other side.

With the stator vanes in the normal or high­ capacity (fully open) position, all of the power is absorbed by the converter and transmitted through the drive line to the wheels. Applying high pressure causes the piston to move the vanes to the low capacity (partially closed) position. Less power is absorbed by the converter and more power Is avail­ able to the power takeoff for operating auxiliary equipment.

Among option al features available for the Cl(B)T 750 Series hauling transmission is the variable Input capacity converter. A variable position stator blade assembly In the torque converter provides ab!lity to vary converter absorption capacity. It allows the converter to match auxiliary or primary power requirements without compromising performance. Only one engine is necessary to provide a desired degree of power at the point where It ls needed most at the moment-the auxiliary equipment for work, the wheels for roadlng, or the desired com­ bination of both.

The stator vanes are located on cranks which flt in a groove in the hydraulic piston. As the piston

PISTON HIGH PRESSURE

LOW PRESSURE

CONTROL PRESSURE RELEASED

HIGH-CAPACITY POSITION

LOW-CAPACITY POSITION

STATOR VANE

variable input capacity converter