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.
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 area 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, Iockwashers, self-locking nuts, self-locking screws, and packings.
All parts must be cleaned before inspection and assembly and after repair. If part is to be removed
from vehicle, wipe off grease and grime before removal so dirt particles will not fall into delicate
engine or hydraulic components. When working on systems where extreme cleanliness is required,
steam clean parts and surrounding area before removal or disassembly. Hands should be kept clean
and free of grease, which can collect dust and dirt.
Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and
gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes
and don't breathe vapors. Do not use near open flame or excessive heat. The flash point
is 100°F to 138°F (38°C to 59°C). If you become dizzy while using cleaning solvent, get
fresh air immediately and get medical aid. If contact with eyes is made, wash your eyes
with water and get medical aid immediately.
Clean inner and outer surfaces of metal parts and all areas that get greasy or oily with drycleaning
solvent (item 16, appendix C). Clean out sludge and gum with stiff brush. Put small parts in wire mesh
basket before immersing in solvent. Use steam cleaning to take off grease and dirt build-up. After
drycleaning solvent has been applied, dry with clean rags (item 10, appendix C).