Chapter 1. INTRODUCTION AND ENGINE GENERAL

TM 55-2840-254-23

CHAPTER 1

INTRODUCTION AND ENGINE GENERAL

This chapter contains standard data and information about forms, records, reports, and general pro-

cedures. It also contains descriptions and other data about the engine and its major components.

The chapter is divided into the following sections:

TITLE

SECTlON

PAGE

General Information

1-1

Equipment Description and Data

1-3

Ill

Principles of Operation

1-13

Repair Parts; Special Tools; Test, Measurement, and

1-41

Diagnostic Equipment (TMDE); and Support Equipment

Service Upon Receipt

Hoisting

Troubleshooting

Servicing

Preventive Maintenance Checks and Services

1-239

Maintenance Procedures

1-443

Preparation for Storage and Shipment

1-553

XII

Standard Torque Limits

1-623

XIII

Standard Practices and Procedures

1-627

Section I. GENERAL INFORMATION

Type of Manual:

Aviation Unit and Aviation Intermediate Maintenance Manual

Model Numbers and Equipment Name:

T55-L-712 - Engine, Gas Turbine

Purpose of Equipment:

Powerplant for CH-47 Helicopter

Department of the Army forms and procedures used for equipment maintenance will be those pre-

scribed by DA Pamphlet 738-751, Functional Users Manual for the Army Maintenance Management

System - Aviation (TAMMS-A).

Change 10 1-1