Table 4-1. Unit PMCS - Continued
W - Weekly
M - Monthly
S - Semi-Annually
M - Monthly
B - Bi-Annual
ITEM TO BE INSPECTED/PROCEDURE
Disassemble brake valve and clean all parts. Replace all rubber O-rings
and any part found worn or damaged.
Replace all rubber parts and any parts found worn or damaged. Set pump-
and-roll regulator to 75 psi and service brake regulator to 45 psi.
Check operation of stop lamp pressure switches and alarm pressure
switches mounted on the brake pedal plate.
PRESSURE PROTECTION VALVES:
Check operation of pressure protection valves. Ensure set points are adjusted
correctly. Replace any valve which leaks or is not adjusted correctly. Refer
to paragraph 4-22.
Check operation of air compressor and governor. With no leaks and all
tanks empty, all air tanks should reach maximum pressure in less than
5 minutes. Maintain governor and compressor as required. Replace
filters in governor.
ELECTRICAL ALARM SYSTEMS:
Test all electrical alarm/indication systems (e g engine oil pressure,
engine over temperature). Replace senders and/or alarm units as
Check all truck lamps both interior and exterior and replace bulbs or
lenses as required.
Inspect engine compartment. Look for signs of wear or leaks or,
deterioration of wiring harnesses, air lines, drive belts or hoses.
Tighten/replace components as required.
Check operation of engine throttle and shut down system. Check for air
leaks or loose hardware. Replace components as required.