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Allison Transmission MT 640 User Manual

Allison Transmission MT 640
48 pages
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Operator’s Manual
AT, MT, HT Series
On-Highway Transmissions
OM1334EN
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Allison Transmission MT 640 Specifications

General IconGeneral
BrandAllison Transmission
ModelMT 640
CategoryMicrophone system
LanguageEnglish

Summary

Warnings, Cautions, and Notes

WARNING Statements

Defines WARNING statements for personal injury or loss of life.

CAUTION Statements

Defines CAUTION statements for equipment damage or destruction.

Shift Selectors

AT, MT, HT Shift Selector Positions

Range Selection: AT 500/1500 with Park

Downhill Braking Warning

Warns about loss of control and damage from improper downhill braking/downshifting.

Range Selection: HT 750DR/HT 750DR DB

Park (P) Warning

Warns about vehicle movement when leaving the engine running without proper safety precautions.

Downhill Braking and Retarder Use

Using Engine for Downhill Braking

Explains using lower ranges for engine braking on downhill grades and potential upshifts.

Care and Maintenance

Periodic Inspections

Outlines essential checks for transmission fluid, linkage, and external components.

Importance of Fluid Level

Explains why maintaining the correct fluid level is crucial for lubrication, cooling, and power transmission.

Prevent Major Problems

Transmission Fluid Check Procedure

Cold Check Procedure

Details the procedure for checking transmission fluid level when the fluid is cold.

Hot Check Procedure

Details the procedure for checking transmission fluid level when the fluid is at operating temperature.

Dropbox Fluid Check

Outlines how to check fluid levels in the dropbox system, if equipped.

Keeping Fluid Clean

Recommended Fluid and Viscosity (Non-MT 643R)

Specifies recommended fluids and viscosity grades for non-MT 643R transmissions.

Recommended Fluid and Viscosity: MT 643R

Fluid and Filter Change Intervals

Fluid Contamination

Metal Particles Warning

Warns about the implications of finding metal particles in the fluid and recommends actions.

Auxiliary Filter

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