Table 21. Unit Preventive Maintenance Checks and Services (Continued)
M - Monthly
S - Semiannually
I n t e r v al
Item to be Inspected
f. Inspect brakeshoe lining.
a. Check electric motor for signs of overheating,
obstructions to ventilation, and for loose mounting.
b. Check air cleaner elements for dirt or clogged
Remove inspection caps on the two check valves, one
in the drain for the extractor and one on the water
heater. Clean out any obstructions and replace caps.
Retorque all mounting bolts on equipment, bins, and
frame assemblies (App D).
Brake shoe is
damaged or rivets