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T 375
Allison Transmission T 375 User Manual
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2
4
Table of Contents
Important Safety Information
4
Abbreviations and Acronyms
5
Trademark Usage
8
Iso 14000
9
List of Warnings
10
Table of Contents
16
Scope of Manual
21
Introduction
22
Keeping that Allison Advantage
22
Driving Tips
33
The Automatic Experience
33
Starting the Engine
33
Cold Weather Starts
37
Preheating Requirement
38
High Fluid Temperature
39
Turning off the Vehicle
40
Parking Brake
40
Engine-Driven Power Takeoff (Pto All Models Except Hs and Pts)
40
Driving on Snow or Ice
41
Rocking out
42
Towing or Pushing
43
Operating down Steep Grades (Rear-Discharge Mixer)
44
Using 2 Nd Reverse (4700/4800 Only)
44
Selecting Range and Shift Schedules
45
Selecting Range
45
Using Keypad Push Button Shift Selector to Select Range
46
Using Upshift and Downshift Arrow Buttons
46
Using Bump-Shift Lever Selector to Select Range
47
Using Strip Push Button Selector to Select Range
50
Selector Display Flashing (Inhibits)
52
SHIFT SELECTOR TRANSITION and OIL FIELD PUMPING (INPUT FUNCTION BZ: WIRE 142) (OFS Models)
58
Shift Schedules and Automatic Range Shifts
61
Upshifting
61
Hold Schedule for Upshifts
61
Downshifting
62
Preselect Schedule for Downshifts
62
Non-Engine Brake Operation
62
Engine Brake or Exhaust Brake Operation
63
Retarder Mode Shift Schedule
64
Accelerator Control
64
KICKDOWN SHIFT SCHEDULE (N/A for OFS Models)
64
PRIMARY and SECONDARY SHIFT SCHEDULES (N/A for OFS Models)
64
PERFORMANCE/ECONOMY SHIFT SCHEDULES (N/A for OFS Models)
65
DYNAMIC SHIFT SENSING (DSS) (N/A for OFS Models)
66
OVER-TEMPERATURE SHIFT SCHEDULE (N/A for OFS Models)
68
Cruise Mode Shift Schedule
68
Acceleration-Based Pattern (Abp)
68
ACCELERATION RATE MANAGEMENT (ARM) (N/A for OFS Models)
69
Low Speed Grade Assist
69
ALLISON TRANSMISSION FUELSENSE 2.0 (N/A for OFS Models)
70
FUELSENSE ® 2.0 Terminology Descriptions
72
Driver Indicator
72
Package (N/A for OFS Models))
72
Using the Hydraulic Retarder
73
Retarder Capacity Reduction
77
Based on Retarder Temperature
78
Based on Transmission Sump Temperature
78
Based on Engine Water Temperature
78
Retarder/Cruise Control Interactions
79
Care and Maintenance
80
Periodic Inspections
80
Prevent Major Problems
81
Importance of Transmission Fluids
81
Recommended Automatic Transmission Fluids
82
Keeping Fluid Clean
83
Fluid Analysis
83
Transmission Fluid Refill
83
Periodic Fluid Level Checks
84
Fluid Check Using Dipstick
85
Cold Check Procedure
88
Hot Check Procedure
89
Transmission Dipstick Markings Illustration
90
Fluid Level Checks Using Allison 5Th Generation or Newer Shift Selectors
90
Electronic Fluid Level Check Prerequisites
90
Electronic Fluid Level Check Procedure
91
Fluid Range Detected for Oil Level Sensor (Ols)
93
Invalid for Display Codes
93
Prognostics Features
93
Prognostics Prerequisites
95
Prognostics Features Availability
95
Procedure to Turn Prognostics on and off
97
Normal Prognostics Indication at Engine Start
98
Setting Fluid Type for Prognostics
99
Oil Life Monitor (Om)
100
Fluid Change Notification
100
Read and Reset Oil Life Monitor (Om) from Selector
101
Filter Life Monitor (Fm)
102
Filter Change Notification
102
Read and Reset Filter Life Monitor (Fm) from Selector
102
Transmission Health Monitor (Tm)
103
Clutch Maintenance Notification
103
Read and Reset Tm from Selector
104
Fluid and Filter Change Interval Recommendations
104
Fluid and Filter Change Procedure
108
Refill Transmission
110
Diagnostics
111
Overview
111
Diagnostic Trouble Code Response
111
Check Trans Light
112
Using Shift Selector for Accessing Diagnostics Information
113
Display Sequence
113
READ/CLEAR Dtcs with KEYPAD PUSH BUTTON SELECTOR
114
READING Dtcs with PROGNOSTICS PACKAGE on
114
READING Dtcs with PROGNOSTICS PACKAGE off
114
CLEARING Dtcs
114
Exiting Diagnostic Mode
115
READ/CLEAR Dtcs with BUMP-SHIFT LEVER SELECTOR
115
READING Dtcs with PROGNOSTICS PACKAGE on
115
READING Dtcs with PROGNOSTICS PACKAGE off
115
CLEARING Dtcs
116
Exiting Diagnostic Mode
116
Dtc List and Description
117
Shift Selectors Components and Functions
130
Select/Monitor Display
130
Backlighting
130
Mode Button
130
Trans Service Indicator (Wrench Icon)
132
SELECTOR DISPLAY DESCRIPTIONS for ACTIVE DIAGNOSTIC TROUBLE CODES (Dtcs) and INHIBITS
133
Selector Display Is Inoperative
134
Bump-Shift Lever Selector
135
Keypad Push Button Shift Selector
136
Strip Push Button Shift Selector
137
Customizing Controls and Tcm Programming
138
Vehicle and Transmission Signal Interface Overview
138
Input and Output Functions Overview
138
Controls System Overview
140
Transmission Control Module (Tcm) Hardware Description
142
Autodetect
143
Adaptive Shifting
143
Communication through Vehicle Datalinks
144
Information Displays
144
External Wire Harnesses, Vehicle Interface Module, and Retarder Controls
145
Wire Harnesses
145
Vehicle Interface Module (VIM)
146
Retarder Controls
146
Transmission Components
148
Torque Converter
148
Planetary Gears and Clutches
149
Cooler Circuit
149
Retarder
149
Control Valve Module
149
Transmission Speed Sensors
150
Transfer Case (Dropbox) 3700 Sp Transmission (5Th Generation Controls Only)
150
General Guidelines
153
Welding on Vehicle
153
Painting on Vehicle
153
Electrostatic Painting
153
Painting of Transmission Control Components
154
Environment
154
Component Access Requirements
154
Customer Service
155
Ordering Parts
155
Transmission Nameplate
155
Genuine Parts
155
Owner Assistance
155
Service Literature
157
Allison Transmission Distributors
157
Revision History
158
4
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Allison Transmission T 375 Specifications
General
Brand
Allison Transmission
Model
T 375
Category
Controller
Language
English
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