2022.10.7
© 2022 Eaton Cummins Automated Transmission Technologies. All rights reserved.
i
TRSM0940 Table of Contents | 
Table of Contents
General Information
Warnings & Cautions   . . . . . . . . . . . . . . . . . . . . . . . . . .1
How to Use This Manual  . . . . . . . . . . . . . . . . . . . . . . . .2
Transmission Overview . . . . . . . . . . . . . . . . . . . . . . . . .3
Serial Tag Information and Model Nomenclature   . . . . .6
Timing Procedures  . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Preventive Maintenance   . . . . . . . . . . . . . . . . . . . . . . .10
Assembly and Disassembly Precautions  . . . . . . . . . . .11
Auxiliary Section Service Procedures
LAS/VAS Auxiliary Section Removal 
and Disassembly – In Chassis . . . . . . . . . . . . . . . . . . .13
LAS/VAS Auxiliary Section Removal 
and Disassembly  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
LAS/VAS Auxiliary Section Assembly 
and Installation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
VCS/VMS Auxiliary Section Removal 
and Disassembly – In Chassis . . . . . . . . . . . . . . . . . . .38
VCS/VMS Auxiliary Section Removal 
and Disassembly  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
VCS/VMS Auxiliary Section Assembly 
and Installation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
MHP/MXP/VHP/VXP Auxiliary Section 
Removal and Disassembly   . . . . . . . . . . . . . . . . . . . . .65
MHP/MXP/VHP/VXP Auxiliary Section 
Assembly and Installation  . . . . . . . . . . . . . . . . . . . . . .78
MHP/MXP/VHP/VXP Auxiliary Countershaft 
Installation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Removal and Installation
VCS/VMS Combination Valve  . . . . . . . . . . . . . . . . . . .95
Input Shaft   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Clutch Housing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Shift Bar Housing  . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Reverse Switch  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Electronic Clutch Actuator (ECA) . . . . . . . . . . . . . . . .110
Low Capacity Inertia Brake (LCIB) . . . . . . . . . . . . . . .114
Release Yoke and Cross-Shaft(s)  . . . . . . . . . . . . . . .116
Cobra Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
Eaton Push Button Shift Control Device (PBSC)  . . . .123
Transmission Harness . . . . . . . . . . . . . . . . . . . . . . . .125
Transmission Electronic Control U
nit (TECU)  . . . . . .127
X-Y Shifter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
Range Valve   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Output Shaft Speed Sensor . . . . . . . . . . . . . . . . . . . .138
Input Shaft Speed Sensor  . . . . . . . . . . . . . . . . . . . . .141
Main Shaft Speed Sensor  . . . . . . . . . . . . . . . . . . . . .144
Electronic Clutch Actuator (ECA) Speed Sensor  . . . .147
Rail Position Sensor  . . . . . . . . . . . . . . . . . . . . . . . . .150
Gear Position Sensor   . . . . . . . . . . . . . . . . . . . . . . . .153
Oil Pump and Lube Tube Installation . . . . . . . . . . . . .156
Disassembly and Assembly
VCS/VMS Combination Cylinder  . . . . . . . . . . . . . . . .172
Range Cylinder LAS/VAS Model  . . 
. . . . . . . . . . . . . .180
MHP/MXP/VHP/VXP Range Cylinder . . . . . . . . . . . . .186
MHP/MXP/VHP/VXP Splitter Cylinder  . . . . . . . . . . . .192
MHP/MXP/VHP/VXP Splitter Gear Bearing 
 . . . . . . . .198
Range Synchronizer   . . . . . . . . . . . . . . . . . . . . . . . . .202
Shift Bar Housing  . . . . . . . . . . . . . . . . . . . . . . . . . . .207
Main Case Main Shaft without Low Force 
Gearing Disassembly . . . . . . . . . . . . . . . . . . . . . . . . .213
Main Case Main Shaft without Low Force 
Gearing Assembly  . . . . . . . . . . . . . . . . . . . . . . . . . . .218
Main Case Main Shaft with Low Force 
Gearing Disassembly . . . . . . . . . . . . . . . . . . . . . . . . .223
Main Case Main Shaft with Low Force 
Gearing Assembly  . . . . . . . . . . . . . . . . . . . . . . . . . . .229
Main Case Disassembly and Lubrication 
Tube Removal  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235
Appendix
Tool Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . .244
Oil Leak Inspection Process  . . . . . . . . . . . . . . . . . . .248
Inspection Procedure   . . . . . . . . . . . . . . . . . . . . . . . .249
Power Flow  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .251
Torque Specifications  . . . . . . . . . . . . . . . . . . . . . . . .255
Lubrication Specifications . . . . . . . . . . . . . . . . . . . . .259
Clutch Greasing Guidelines  . . . . . . . . . . . . . . . . . . . .260
Grade Sensor Calibration   . . . . . . . . . . . . . . . . . . . . .261