Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) CONT
Q - Quarterly S - Semi-Annually A Annually B-Bi-Annually
Item to Inspect
Not Fully Mission Capable If:
a. Check purge intake and exhaust
doors for good condition.
Purge intake and exhaust doors
have damage to gaskets, or latches,
or clogged/damaged screen or
filter, or missing or loose fasteners.
b. Check purge intake and exhaust
door dampers and motors for
Purge intake and exhaust door
dampers and motors have missing
or loose fasteners, or loose or
broken motor electrical
c. Check ECU intake ducts
located in the machinery room
for good condition.
ECU intake ducts have missing or
loose fasteners, damage to screens,
gaskets, or filters.
Dampers do not operate properly.
Dampers have loose or broken
electrical connections to motors.
d. Check purge door limit
switches for proper operation.
Purge door limit switches do not
operate properly. Purge door limit
switches have missing hardware or
loose electrical connections.
a. Check the compressor for good
condition and proper operation.
Refer to TM 10-4310-392-
13&P for further PMCS
Compressor has missing or loose
mounting hardware, or loose or
broken electrical connections.
b. Check air tank for good
Air leaks from tank or fittings, or
has missing or loose tank mounting
c. Check pressure switch and
gauge for good condition and
Pressure switch and gauge
inoperative, or has broken or loose
d. Check system tubing and
piping for good condition.
System tubing or piping has leaks.
e. Check system valves for good
System valves have leaks.