TM 5-4310-368-14
a.
Inspection
(1)
Inspect oil line between compressor and panel mounted pressure gage for leaks. Replace leaking line
or fittings.
(2)
Inspect oil filter for leaks. Replace leaking filter or fittings.
b.
Replacement. Refer to direct support maintenance.
4-38.
CONDENSATE DRAIN/ UNLOADER VALVE
This task covers:
a.
Testing
c.
Replacement
b.
Inspection
d.
Adjustment
INITIAL SETUP
Applicable Configurations
All
a.
Testing
(1)
Start compressor. Refer to operating instructions.
(2)
After compressor reaches 3500 PSI in the 4th stage, switch throttle switch to low and compressor load
switch to unload.
(3)
Observe 3rd and 4th stage pressure gages. The 3rd stage pressure should remain above 200 PSI. The
4th stage pressure gage should remain above 500 PSI. Adjust valve as required.
(4)
Stop compressor. Refer to operating instructions.
b.
Inspection. Inspect condensate drain valve, all tubing and fittings for signs of leaks or damage. Repair or
replace as required.
c.
Replacement. Refer to direct support maintenance.
d.
Adjustment
(1)
Loosen jam nuts.
(2)
Adjust screws as required to obtain proper 3rd and 4th stage pressure during unload sequence. Turn screws
in to raise pressure, out to reduce pressure.
(3)
Secure jam nuts.
4-41
