Section VI. GENERAL MAINTENANCE INSTRUCTIONS

TM 5-2420-222-20-1

Section VI. GENERAL MAINTENANCE INSTRUCTIONS

Page

Cleaning ...............................................................2-138

Service Replacement Kits .................................... 2-139

Electrical Ground Points .......................................2-142

Soldering .............................................................. 2-140

Fluid Disposal .......................................................2-144

Tagging Parts....................................................... 2-140

Heat Shrinkable Tubing ........................................2-140

Tubes with Compression Fittings ......................... 2-143

Inspection .............................................................2-139

Wire Replacement ............................................... 2-141

Lines and Ports.....................................................2-143

Wire Terminal and Connector

Operational and Leak Checks ..............................2-144

Replacement ................................................. 2-141

Preshop Analysis..................................................2-137

Work Safety ......................................................... 2-137

Scope ...................................................................2-137

SCOPE

These General Maintenance Instructions contain general shop practices and specific techniques you must be familiar with

to maintain the loader backhoe properly. You should read and understand the information provided here and in the

operator's General Maintenance Instructions (TM 52420-222-10) before performing Organizational Maintenance tasks on

the loader backhoe.

WORK SAFETY

Before you start a task, think about the risks and hazards to your personal safety and others. Wear protective gear such as

safety goggles or lenses, safety shoes, rubber apron, or gloves. Protect yourself against injury. Always clean up spilled

fluids right away to avoid slipping hazard. When lifting heavy parts, have someone help you. Make sure that lifting/jacking

tool is working properly, that it meets the weight requirement of the part to be lifted, and that it is securely fastened to the

part. Always use power tools carefully.

Observe all WARNINGs and CAUTIONs.

PRESHOP ANALYSIS

The purpose of preshop analysis is to find out how much repair, modification, or replacement is needed to fix the

equipment as outlined in this manual. Sometimes the reason for equipment failure can be seen right away and, therefore,

complete teardown Is not necessary for repair. Disassemble equipment only as far as necessary to repair or replace

broken parts.

All tags and forms attached to the equipment must be checked to find out the reason for removal from service. Also check

all Modification Work Orders (MWO) and Technical Bulletins (TB) for equipment changes and updates.

In some cases you may damage a part just by removing it. If the part appears to be good, and other parts behind it are not

defective, leave it on and continue with procedure. Here are a few simple rules:

1. Don't take out dowel pins unless bent, broken or damaged.

2. Don't pull bearings or bushings unless they are damaged. If you have to get at a damaged or defective part behind

them, pull off bearings or bushings very carefully.

3. Replace all gaskets, lockwashers, self-locking nuts, self-locking screws and packings.

2-137