Table 4-1. Unit Preventive Maintenance Checks and Services (continued)
W - Weekly
M - Monthly
Q - Quarterly
Item to be
Test switch to make sure it works
Inspect fuel lines for breaks, cracks, or
other damage. Check lines, hoses, and
fittings for tightness. Check for leakage.
a. Test batteries in accordance with para-
graph 4-30. Check that batteries are
charged and electrolyte level is
correct. Check cables for corrosion,
breaks, frays, and damage. Make
sure terminals are secure. Lubricate in
accordance with LO 55-2210-224-12.
b. Clean and paint battery compartment as
a. Inspect sand controllers for broken
welds and cracks. Make sure valves
are mounted securely.
b. Remove bottom plug and the quick-
disconnect flange and clean the interior.
c. Inspect sander control valves for proper
d. Clean the sander control valve by
pushing the automatic cleanout jets.
e. Inspect sandbox for cracks and breaks.
Service sandbox by removing wet sand,
cleaning box and replacing with dry sand.
Sander Hose and
Inspect sander hose for cracks, breaks, and
deterioration. Inspect bracket for cracks,
breaks, and security of mounting.
a. Check brake system valves and gages for
proper operation and security of
b. Check independent and automatic brake
c. Check cutout cocks for proper operation.
d. Remove and clean strainers.