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Allison Transmission MT 650 User Manual

Allison Transmission MT 650
48 pages
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Operator’s Manual
AT, MT, HT Series
On-Highway Transmissions
OM1334EN
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Allison Transmission MT 650 Specifications

General IconGeneral
BrandAllison Transmission
ModelMT 650
CategoryMicrophone system
LanguageEnglish

Summary

WARNINGS, CAUTIONS, AND NOTES

A BRIEF DESCRIPTION OF THE ALLISON AUTOMATIC

TORQUE CONVERTER

Explains the function and components of the torque converter.

LOCKUP CLUTCH (AT 1500, MT(B) 600, HT 700)

Details the operation and components of the lockup clutch.

ALLISON AUTOMATICS

Typical AT, MT, HT Shift Selector Positions

Table showing shift selector positions for various AT, MT, HT models.

RANGE SELECTION – AT 500 SERIES AND AT 1500 SERIES WITH A SECOND NEUTRAL (PARK)

RANGE SELECTION - AT 500 SERIES AND AT 1500 SERIES WITHOUT A SECOND NEUTRAL (PARK); MT 640, MT(B) 643, MT 643R, MT(B) 644, MT 647; HT 740, HT 747

RANGE SELECTION — MT 650; MT(B) 653DR

RANGE SELECTION — HT 750CR, HT 754CR, MT(B) 654CR

RANGE SELECTION — HT 750DR, HT 750DR DB

DRIVING TIPS

OPERATING IN COLD WEATHER

Disregarding minimum fluid temperature limits can result in transmission malfunction.

USING THE ENGINE FOR DOWNHILL BRAKING TO SLOW THE VEHICLE OR EQUIPMENT

Downhill Braking Procedure

Select a lower transmission range for downhill operation to increase engine braking.

USING THE HYDRAULIC RETARDER

WARNING

Do not use the retarder during inclement weather or when road surfaces are slippery.

CAUTION

Observe cautions when driving a vehicle equipped with an input or output retarder.

CARE AND MAINTENANCE

PREVENT MAJOR PROBLEMS

Overheating

Minor problems can be kept from becoming major problems if maintenance personnel are notified of overheating.

IMPORTANCE OF PROPER FLUID LEVEL

Fluid Level Importance

Maintaining the correct fluid level is crucial for cooling, lubrication, and hydraulic power.

TRANSMISSION FLUID CHECK PROCEDURE

Cold Check

Determines if enough fluid is present for safe operation until a Hot Check.

Hot Check

Ensures accurate fluid level reading at operating transmission temperature.

KEEPING FLUID CLEAN

Fluid Contamination Prevention

Ensures transmission longevity by preventing contamination from improper handling.

Recommended Automatic Transmission Fluid and Viscosity Grade — Non-MT 643R Transmissions

RECOMMENDED AUTOMATIC TRANSMISSION FLUID AND VISCOSITY GRADE — MT 643R TRANSMISSIONS

FLUID AND FILTER CHANGE INTERVALS

AUXILIARY FILTER

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