Table 4-1. Unit Preventive Maintenance Checks and Services (continued)
W - Weekly
M - Monthly
Q - Quarterly
Item to be
Check muffler for holes, splits, or damage.
Check warning bell and buzzer for proper
a. Check hoses for leakage and deteriora-
b. Check clamps for tightness.
a. Inspect fan for proper operation. Check
that blades are not cracked, broken,
b. Check for missing or loose mounting
c. Check screens for damage and loose
d. Check fan belts for loose adjustment,
wear, and deterioration.
e. Check pulleys for cracks, breaks, and
damage and for missing or loose mounting
a. Check radiators for leaks, clogging,
and bent fins.
b. Service radiator by checking coolant
level and replenishing with a 50/50
solution of water and antifreeze.
Check seats and cushions for wear, damage,
and loose mounting.
Check armrests for wear, damage, and loose