TM 5-6640-212-14
Table 3-1. Preventive Maintenance Checks and Services (PMCS) - Continued
NOTE: Within designated interval, these checks are to be performed in the order listed.
B - Before
A - After
M - Monthly
D - During
M - Monthly
C - Combat Operability Check
Equipment is
ITEM
INTERVAL
ITEM TO BE
NOT READY/
NO.
B
D
AW
INSPECTED
PROCEDURE
AVAILABLE if:
Vacuum
Open draincock daily at bottom
Pump
of tank receiver tank and drain
out accumulated water resulting
from condensation. Leave the
draincock open only as long as
a solid stream of water runs,
then close tightly.
Clean the air intake filters
weekly.
Periodically, the V-belt should
be adjusted so that a firm down-
ward pressure at the middle of
the span will cause a defection
of one-half to three-fourths
inch.
2
Air
Check for loose mounting bolts.
Check crankcase oil level.
Check intake filters for ob-
structions.
Listen for rattles, knocks,
squeaks, or hums that may
indicate trouble in air com-
pressor or motor.
Observe motor for indication
of overheating and smoke.
3-3
