Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (cont).
H - Hours of operation
M - Monthly
S - Semiannually
Lubricating Oil and Filter
Hydraulic Actuator Screen
Breather and Breather Tube
Clean or replace, as necessary, fuel strainer in
bottom of fuel pump.
Perform a hydrometer test on batteries every
100 hours. Refer to TM 9-6115-549-12 for
Inspect for worn, frayed, oil soaked, or cracked
belts. Check adjustment. Proper adjustment for
fan belt is a deflection of 9/32 inch with application
of 12-14 lb pressure midway between fan and
accessory drive pulley. The alternator drive belt
is adjusted properly when there is 9/64 inch
deflection with application of 35 lb pressure
midway between alternator and accessory drive
Replace filter elements.
Clean fuel strainer.
Change lubricating oil and filter. (Refer to LO.)
Drain and refill.
Inspect for damage. Clean breather and tube at oil
Clean air cleaner element whenever necessary as
indicated by air filter condition indicator light.
Replace any broken or cracked lenses or defective
Check for cuts, breaks, frayed wires, or damaged