Allison Transmission HT 750DRD User Manual

26
PREVENT MAJOR PROBLEMS
Minor problems can be kept from becoming major problems if you notify
maintenance personnel when any of these conditions occur:
• Overheating
• Shifting feels odd
• Transmission leaks fluid
• Unusual transmission-related sounds (changes in sound level caused by
normal engine thermostatic fan cycling while climbing a long grade with a
heavy load have been mistaken for unusual transmission-related sounds).
IMPORTANCE OF PROPER FLUID LEVEL
Because the transmission fluid cools, lubricates, and transmits hydraulic power, it is
important that the proper fluid level be maintained at all times. If the fluid level is too
low, the converter and clutches will not receive an adequate supply of fluid. If the level
is too high, the fluid will aerate, the transmission will overheat, and fluid may be
expelled through the breather or dipstick tube.
Transmission Cross-Section Showing Internal Components
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LOCKUP
CLUTCH
MODULATED LOCKUP VALVE
(OPTIONAL)
CONVERTER-DRIVEN POWER
TAKEOFF DRIVE GEAR
MT 653DR
OIL FILTER
CONTROL VALVE BODY
GOVERNOR DRIVEN
GEAR
SPEEDOMETER
DRIVE GEAR
LOW CLUTCH
FIRST CLUTCH
SECOND
CLUTCH
THIRD CLUTCH
FOURTH
CLUTCH
FORWARD
CLUTCH
TORQUE
CONVERTER
V01960

Allison Transmission HT 750DRD Specifications

General

Brand	Allison Transmission
Model	HT 750DRD
Category	Microphone system
Language	English