TM 5-4310-375-14
Table 4-2. Organizational Preventive Maintenance Checks and Services
Hours
H
-
-
Semiannually
Monthly
S
M
-
A
-
Annually
Quarterly
Q
-
ITEM TO BE
INTERVAL
ITEM
Q
PROCEDURE
M
AH
INSPECTED
S
NO.
V-Belts
Adjust drive belt tension as shown in figure 2-3.
1.
Inspect the pressure switch for physical damage, tightness of
Pressure switch
2.
wiring lead connections and function while operating. Cut-in
pressure is 175 psi 10 psi (1 2.3 kgs/cm2 0.70 kgs/cm2) and
cut-out is 200 psi +0 -10 psi (14.1 kgs/cm2 +0, -0.70 kgs/cm2).
Refer to para 4-17.
Every 1500 hours check the air compressor first and second stage
Compressor first
3.
valves for wear and damage. Refer to para 4-19.
and second stage
valves.
Every 1500 hours, when item 3 above is performed, clean the
4.
Intercooler and
intercooler and aftercooler and inspect for any damage. Refer
aftercooler
to para 4-20.
When adjusting drive belt tension (Item 1. above), inspect flywheel
Flywheel
5.
for chipping or cracks on drive belt grooves and air circulating
ribs. Inspect for tightness on compressor crankshaft. Replace a
damaged flywheel. Refer to para 4-21.
Inspect check valve for any physical damage and air flow direction
6.
Check valve
operation. Replace a defective check valve. Refer to para 4-23.
Inspect pressure gauge for broken face and proper operation while
7.
Pressure gauge
pressure is in air receiver tank. Replace a defective pressure gauge.
Refer to para 4-24.
Inspect air receiver tank for any dents, rusting, or other physical
Air receiver tank
8.
damage. Refer to para 4-26. If replacement is necessary, notify
Direct Support.
When notified by operator/crew of defective inflator gauge or
Inflator gauge and
9.
globe valve, replace. Also, at interval indicated, check for leaks
globe valve
and operation as directed in para 4-27 and 4-29.
At interval indicated, check air service hose for cuts, fraying of
Air service hose
10.
hose cover, and damaged hose end fittings. Replace a damaged
service hose. Refer to para 4-28.
4-6
