Chapter 22. TRANSMISSION MAINTENANCE

TM 9-2320-360-34-2

CHAPTER 22

TRANSMISSION MAINTENANCE

Contents

Para

Page

Introduction ............................................................................................................................. 22-1

22-1

General Maintenance Instructions ............................................................................................. 22-2

22-1

Transmission to Transmission Stand Installation/Removal .......................................................... 22-3

22-3

Flywheel Assembly/Lockup Clutch Repair.................................................................................. 22-4

22-9

Torque Converter Stator Repair ................................................................................................ 22-5

22-17

Torque Converter Pump Repair ................................................................................................ 22-6

22-20

Torque Converter Housing/Front Support Repair........................................................................ 22-7

22-24

Forward Clutch and Turbine Shaft Repair .................................................................................. 22-8

22-37

Fifth Clutch Repair ................................................................................................................... 22-9

22-47

Fourth Clutch Repair .............................................................................................................. 22-10

22-53

Lockup Cutoff Valve Body Repair............................................................................................ 22-11

22-56

Trimmer Valve Repair ............................................................................................................ 22-12

22-58

First Shift Valve Repair ........................................................................................................... 22-13

22-60

Main Control Valve Repair...................................................................................................... 22-14

22-63

Center Support Repair............................................................................................................ 22-15

22-76

Planetary Gearing, Shafts, and Third Clutch Repair.................................................................. 22-16

22-83

Rear Cover and First Clutch Repair ......................................................................................... 22-17

22-97

Adapter Housing and Second Clutch Repair ............................................................................ 22-18

22-107

Transmission Housing Repair ................................................................................................. 22-19

22-112

Section I. INTRODUCTION

22-1. INTRODUCTION

This chapter contains instructions for replacement and repair of transmission components at the General Support

maintenance level. Some parts must be removed before transmission parts can be accessed. They are referenced to

other paragraphs of this manual or TM 9-2320-360-20.

Section II. SERVICE AND INSPECTION

22-2. GENERAL MAINTENANCE INSTRUCTIONS

Maintenance. Follow these basic instructions when working on the transmission.

(1) Handle transmission parts carefully to prevent nicking, scratching, or denting. Internal parts of transmission

have close operating tolerances. They may bind if parts are damaged. Some parts rely upon a smooth

surface to create a seal. They may leak if surfaces are scratched.

(2) Do not use metal tools when working on internal parts of transmission or when removing gaskets or

packing. Use a pointed wooden dowel to remove packing from grooves. Use wooden or plastic scrapers

on gasket surfaces.

Cleaning. Follow these cleaning instructions when working on the transmission.

(1) All parts must be clean to permit proper inspection of subassemblies and parts. Ensure that no debris or

foreign material enters the transmission when working on internal parts.

22-1