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TM 5-4210-220-12
Table 4-1. Unit PMCS - Continued
W - Weekly
M - Monthly
S - Semi-Annually
M - Monthly
B - Bi-Annual
ITEM
ITEM TO BE INSPECTED/PROCEDURE
NO.
W
M
S
A
B
43
BRAKE VALVE:
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.
44
AIR SWITCHES:
Check operation of stop lamp pressure switches and alarm pressure
switches mounted on the brake pedal plate.
45
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.
46
AIR COMPRESSOR:
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.
47
ELECTRICAL ALARM SYSTEMS:
Test all electrical alarm/indication systems (e g engine oil pressure,
engine over temperature). Replace senders and/or alarm units as
required.
48
ELECTRICAL LAMP:
Check all truck lamps both interior and exterior and replace bulbs or
lenses as required.
49
ENGINE COMPARTMENT:
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.
50
ENGINE THROTTLE:
Check operation of engine throttle and shut down system. Check for air
leaks or loose hardware. Replace components as required.
4-15
Interval
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