TM 5-3805-290-23-2
MECHANICAL GENERAL MAINTENANCE INSTRUCTIONS - CONTINUED
0023 00
WORK SAFETY
00023 00
1.
Before starting a task, think about the risks and hazards to your safety as well as that of others. Wear protective gear
such as safety goggles or lenses, safety shoes, rubber apron, or gloves. Protect yourself against injury.
2.
Observe all WARNINGs, CAUTIONs, and NOTEs.
3.
When lifting heavy parts, have someone help you. Make sure lifting equipment is working properly, suitable for the task
assigned, of sufficient load capacity, and secured against slipping.
4.
Always use power tools carefully.
5.
Before beginning a procedure, ensure the following conditions have been observed, unless otherwise specified:
a.
Machine must be parked on level ground with parking brake engaged.
b.
Work tool must be lowered to the ground.
c.
Transmission must be in N (Neutral).
d.
Engine must be OFF.
e.
Components which are hot at operating temperatures (i.e., cooling, exhaust, and hydraulic systems) must cool
down before they are removed.
f.
Components must, however, be at operating temperature to be tested.
g.
Battery disconnect switch must be in OFF position and/or batteries disconnected when performing electrical sys-
tem maintenance.
h.
Hydraulic system pressure must be relieved before disconnecting any hydraulic system line or fitting (TM 5-3805-
290-10).
GENERAL INFORMATION
00023 00
1.
Before beginning a task, find out how much repair, modification, or replacement is needed to fix the equipment as
described in this manual. Sometimes the reason for equipment failure can be seen right away and complete teardown is
not necessary. Disassemble the equipment only as far as necessary to repair or replace damaged or broken parts.
2.
All tags and forms attached to the equipment must be checked to learn the reason for removal from service. Check all
Modification Work Orders (MWOs) and Technical Bulletins (TBs) for equipment changes and updates.
3.
In some cases, a part may be damaged by removal. If the part appears to be good, and other parts behind it are not defec-
tive, leave it on and continue the procedure. Here are a few simple rules:
a.
Do not remove dowel pins or studs unless loose, bent, broken, or otherwise damaged.
b.
Do not pull bearings or bushings unless damaged. If you must get at parts behind them, pull out bearings or bush-
ings carefully.
c.
Replace all gaskets, seals, preformed packings, O-rings, cotter pins, spring pins, self-locking nuts, and lockwash-
ers.
0023 00-2
