Table 4-1. Unit Preventive Maintenance Checks and Services (continued)
W - Weekly
M - Monthly
Q - Quarterly
Item to be
d. Check that the brush pressure springs
will not come to within 1/8 inch (3.2 mm)
of frame before next inspection.
a. Inspect air compressor and drive pulleys
and Drive Pulleys
for proper operation.
b. Service air compressor in accordance
c. Inspect pulley for cracks and breaks
and for broken sheaves.
d. Check for loose or missing mounting
e. Inspect belts for tightness. Check that
belts are not cracked, broken, stretched,
Inspect for bent, cracked, or damaged air
cleaner. Check filter element for dirt and
damage. Service filter in accordance with
Check governor for proper operation.
Air pressure shall be between 120 and
130 psi (827 and 896 kPa).
Inspect door for wear, corrosion, broken
welds, cracks, and security of mounting.
Check door lock for ease of operation and
tightness. Service in accordance with
Inspect parts for wear, corrosion, broken
welds, and loose mounting.
and Cutter Lever
Service engine in accordance with LO 55-
Check for plugged or burned-out exhaust pipe.