TM 5-4310-358-14
Table 4-2. Troubleshooting (Con't)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
Excessive Starting or
Step 1. Check receiver for condensate.
Refer to paragraph 3-12 and drain the
Stopping
condensate.
Step 2. Check for air leaks in piping,
Repeat Step 1 in paragraph 3 above.
or the recei ver check valve leaking.
Step 3. Check for leaking, broken,
Notify Direct Support Maintenance.
or worn pressure switch (fig. 1-2).
6. Compressor Running Hot
Step 1. Check that air passage is
Remove any foreign objects that may be
not blocked at fan wheel.
blocking ventilation.
Step 2. Check for a leaking check
Refer to paragraph 4-18 and replace a
valve.
defective check valve.
7. Compressor Running Slow
Step 1. Check for low line voltage,
Tighten loose connections. If the
or a defecti ve motor starter heater.
compressor still runs slowly, notify
Direct Support Maintenance.
Step 2. Check for a leaking release
Refer to paragraph 4-17 and replace a
valve.
leaking release valve.
Section VI. MAINTENANCE OF THE ELECTRIC MOTOR AND COMPRESSOR
4-12. General. The electric motor can be removed
from the air receiver tank as a unit after removal of the
(2) Install and adjust V-belt tension as
V-belt guard, belts, and electrical leads have been
described in paragraph 4-14 below.
disconnected. The air compressor assembly can be
(3) Install V-belt guard and tighten attaching
removed as a unit after the V-belt guard, belts and
hardware securely.
aftercooler tube are removed.
(4) Connect electrical leads.
4-13.
Electric Motor.
4-14.
Compressor Assembly.
a. Removal.
Refer to figure 4-4 and remove
electric motor as follows:
compressor assembly as follows:
(1) Remove attaching hardware and remove
V-belt guard.
CAUTION
(2) Disconnect and remove aftercooler tube.
(3) Remove compressor mounting bolts.
Make sure main power source is
disconnected.
and remove compressor assembly.
(1)
Remove attaching hardware and remove
V-belt guard.
(2)
Tag and disconnect electrical leads.
compressor assembly as follows:
(3)
Remove motor mounting bolts.
(1) Position compressor assembly on tank
(4)
Remove V-belts from motor pulley.
and install mounting bolts after aligning flywheel with
(5)
Remove electric motor assembly.
motor pulley and installing V-belts on pulleys.
(2) Tighten compressor mounting bolts.
(3) Install and connect aftercooler tube.
electric motor as follows:
(4) Install V-belt guard and attaching
hardware.
(1) Place electric motor
in
position
and
loosely install mounting bolts.
4-6
