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Allison Transmission T 375

Allison Transmission T 375
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OM8491EN
OPERATOR’S MANUAL
3000 and 4000 Series
Allison 5th and 6th Generation Controls

Table of Contents

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Allison Transmission T 375 Specifications

General IconGeneral
BrandAllison Transmission
ModelT 375
CategoryController
LanguageEnglish

Summary

Important Safety Information

Warnings, Cautions, and Notes

Explains the meaning and use of Warning, Caution, and Note headings.

List of Warnings

Safety Warnings and Procedures

Details essential safety procedures for vehicle operation and handling.

Driving Tips

Starting the Engine Safely

Provides crucial safety warnings and steps for starting the engine.

Cold Weather Starts

Details operational procedures and considerations for starting in cold weather.

High Fluid Temperature Operations

Explains the conditions and actions related to high transmission fluid temperatures.

Parking Brake Procedures

Details warnings and procedures related to the parking brake.

Towing or Pushing Procedures

Outlines the correct methods for towing or pushing the vehicle.

Selecting Range and Shift Schedules

Selecting the Transmission Range

Explains how to select the appropriate gear range for operation.

Using the Hydraulic Retarder

Retarder Capacity Reduction

Explains how retarder capacity is reduced due to high temperatures.

Care and Maintenance

Recommended Automatic Transmission Fluids

Lists approved fluids and considerations for selection.

Periodic Fluid Level Checks

Explains how to check transmission fluid levels.

Fluid Check Using Dipstick

Provides step-by-step instructions for checking fluid level with a dipstick.

Cold Check Procedure

Details the procedure for checking fluid level in cold conditions.

Hot Check Procedure

Details the procedure for checking fluid level at operating temperature.

Fluid Level Checks Using Shift Selectors

Explains how to check fluid level using electronic shift selectors.

Electronic Fluid Level Check Procedure

Provides step-by-step instructions for electronic fluid level checks.

Fluid and Filter Change Interval Recommendations

Provides guidelines for fluid and filter change intervals.

Fluid and Filter Change Procedure

Details the steps for changing transmission fluid and filters.

Prognostics Features

Procedure to Turn Prognostics On and Off

Provides steps to enable or disable prognostics features.

Oil Life Monitor (OM)

Explains the OM feature for monitoring fluid life.

Filter Life Monitor (FM)

Explains the FM feature for monitoring filter life.

Transmission Health Monitor (TM)

Explains the TM feature for monitoring clutch health.

Diagnostics

Diagnostics Overview

Provides an overview of diagnostic features and DTCs.

Diagnostic Trouble Code (DTC) Response

Explains how the system responds to active Diagnostic Trouble Codes (DTCs).

Check Trans Light Indicator

Explains the function and interpretation of the Check Trans light.

Using Shift Selector for Diagnostics

Details how to use the shift selector to retrieve diagnostic information.

ReadClear DTCs with Keypad Push Button Selector

Explains how to read and clear DTCs using keypad selectors.

Reading DTCs with Prognostics On

Details how to read DTCs when the prognostics package is enabled.

Reading DTCs with Prognostics Off

Details how to read DTCs when the prognostics package is disabled.

Clearing DTCs

Explains how to clear Diagnostic Trouble Codes.

ReadClear DTCs with Bump-Shift Lever Selector

Explains how to read and clear DTCs using the bump-shift selector.

Reading DTCs with Prognostics On (Bump-Shift)

Details how to read DTCs with prognostics on using bump-shift.

Reading DTCs with Prognostics Off (Bump-Shift)

Details how to read DTCs with prognostics off using bump-shift.

Clearing DTCs (Bump-Shift)

Explains how to clear DTCs using the bump-shift selector.

DTC List and Descriptions

Provides a comprehensive list and descriptions of Diagnostic Trouble Codes.

DTC List and Descriptions (Continued)

Continues the list of Diagnostic Trouble Codes and their descriptions.

Shift Selectors Components and Functions

Selector Display Descriptions for DTCs and Inhibits

Explains what different selector display conditions mean for DTCs and inhibits.

Customizing Controls and TCM Programming

Transmission Control Module (TCM) Hardware Description

Details the hardware components and compatibility of the TCM.

External Wire Harnesses, Vehicle Interface, and Retarder Controls

Retarder Controls

Details the various retarder apply systems and operator controls.

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