TRUCK SERVICE MANUAL
TRANSMISSION
GENERAL INFORMATION
Para 1-6
SPECIFICATIONS AND DATA CHART
HT 750CRD
Rating:
Input torque (net installed) ............................................................. 1130 lb ft.
(1532 Nm) (max)
Input speed (max) .......................................................................... 3000 rpm
Input horsepower (net
installed) .................................................................................. 400
298 kW (max)
Mounting:
Engine ............................................................SAE 1 automotive housing
Vehicle ...........................................................Six-hole SAE 2 mounting pad (Earlier models have
four-hole SAE 1 mounting pad)
Drive...............................................................Flex disk
Rotation:
Input ...............................................................Clockwise
Output (in forward ranges) .............................Clockwise
Torque converter:
Type ...............................................................Single-stage, poly-phase, 3 element
Converter model ............................................TC 470
Torque multiplication ratio
(at stall)....................................................2.8:1
Lockup clutch .................................................Automatic in selected ranges
Gear Data .............................................................Planetary straight-cut spur, constant mesh
Clutches................................................................Oil cooled, hydraulically actuator, spring released, self-
compensating for wear
Sump ....................................................................Integral
Oil systems:
Oil pump (input) .............................................Engine driven, positive displacement
Oil pump (scavenge)......................................Engine driven, positive displacement, spur gear type.
Oil filter ...........................................................External, Suction screen (in sump)
Oil capacity (less
external circuits) ......................................8 US gal (30.3 litres) (approx.)
Initial fill (as received
from factory) ............................................6 US gal (22.7 litres) (approx.)
Refill (oil and filter
changed) ...................................................6
5 US gal (24
6 litres) (approx.)
Oil type ........................................................... Above -30F (-34C) hydraulic transmission fluid type
DEXRON Below -30F (-34C), hydraulic trans-
mission fluid type DEXRON -auxiliary preheat
required to raise temperature in sump and external
circuit.
Oil temperature:....................................................Converter-Out
(To Cooler)
Sump
Converter Operation ......................................300F (149C)
250F (121C)
Lockup Operation...........................................250F (121C)
250F (121C)
Dexron is a registered trademark of General Motors.
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