TM 5-3810-288-12
Table 3-1.
Preventive Maintenance Checks and Services-Continued
Interval
B - Before operation
A - After operation
M - Monthly
Operator
Org.
D - During operation
W - Weekly
Q - Quarterly
Item
Daily
M
Q
Number
B
D
A
W
Item to be inspected
Procedure
Reference
X
Front drum brake
Check operation, adjust if necessary. If lining is worn
to within 1/16 inch of rivet heads at point of most wear,
install new lining.
X
Rear drum brake
Check operation, adjust if necessary. If lining is worn
to within 1/16 inch of rivet heads at point of most wear,
install new lining.
X
Boom hoist brake
Check operating, adjust if necessary. If lining is worn
to within 1/16 inch of rivet heads at point of most wear,
install new lining.
X
Swing brake
Check operation, adjust if necessary.
X
Controls
With the unit running, operate each control. See that
the control functions properly. Inspect for damage, loose
mounting, and missing mounting cap-screws.
Replace damaged items a-d missing cap-screws.
X
Boom and/or jib
Inspect visually for damage including cracks, breaks,
and general condition. Repair or replace damaged boom
or jib sections.
X
Sheaves, and hook block
Inspect visually for damage including cracks breaks,
and general condition. Replace hook block if cracked or if
there is a 15 per cent increase in distance from the hook
point to internal surface of hook th roat as compared to
new hook block. Replace worn, cracked, or distorted
sheaves.
X
Gages and instruments
Normal readings are:
Coolant temperature
160 to 200' F.
Engine oil pressure
45 psi (Maximum)
See figure 2-37
2400 rpm (Maximum)
See paragraph 1-4.
X
Engine clutch
Adjust, if necessary
X
Hook rollers
Inspect hook rollers for wear and proper adjustment.
Maximum allowable clearance between hook rollers and
lower side of roller path is 1/16 inch. Check for cracked
hook roller brackets and weld is cracked.
3-4
