TM 5-4310-275-14
Table 4-2. TROUBLESHOOTING (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. INSUFFICIENT AIR FLOW, LOW OUTLET PRESSURE, OR EXCESSIVE PUMP-UP TIMEContinued
b. Installation.
(1) Screw in the pressure relief valve.
(2) Install all mounting hardware.
(3) Connect all air lines.
Step 3. Check for leakage from the pneumatic dump valve due to damaged, dirty or defective parts.
Clean and /or replace the valve.
a. Removal.
(1) Depress push valve on the control panel to relieve air pressure.
(2) Remove the pressure relief valve, check valve, and back pressure valve.
(3) Remove the separator and filter assembly.
WARNING
Dry cleaning solvent P-D-680 used to clean parts is potentially dangerous to personnel and
property. Avoid repeated and prolonged skin contact. Do not use near open flame or excessive
heat. Flash paint of solvent is 1OOF.-138F. (39C.--59C.).
b. Cleaning. Clean the dump valve with dry cleaning solvent, Fed Spec P-D-680.
c. Installation.
(1) Screw the dump valve onto the separator assembly.
(2) Install the separator and filter assembly.
(3) Install the pressure relief, check valve, and back pressure valve.
Step 4. Inspect for a partially closed shut-off valve to receiver.
Open valve.
Step 5. Check for a clogged line filter element.
Replace the element.
Step 6. Inspect for restricted air inlet to compressor first stage cylinder.
Remove the restriction.
Step 7. Check compressor for not operating at rated speed.
Engine governor not properly adjusted or engine operating erratically. See TM 5-2805-257-14.
2. EXCESSIVE OIL CONSUMPTION (Air Compressor)
Inspect for oil leaks.
Repair or replace parts as necessary.
3. AIR COMPRESSOR OVERHEATS
Step 1. Check for low oil supply.
Replenish the oil supply.
Step 2. Inspect for insufficient or obstructed flow of cooling air.
Position the cart to provide adequate flow of air through louvers. Open access doors.
Step 3. Check for clogged fins on cylinders or tubing.
Clean thoroughly.
4. EXCESSIVE MOISTURE OR OIL VAPOR IN HIGH PRESSURE AIR
Step 1. Inspect the desiccant container.
If the desiccant color has faded from the characteristic blue then discard. Unscrew the cap to lift out the
desiccant container.
Step 2. Check for partially full or defective filter and separator assembly.
Press push valve to blow down condensate.
Section VI. RADIO INTERFERENCE SUPPRESSION
4-12. Definitions
the methods used to eliminate or effectively
reduce radio interference generated by the
compressor assembly.
used herein applies to electrical disturbances in
the radio frequency range which are generated by
4-13. General Methods Used to Attain Proper
the compressor assembly and which may interfere
Suppression
with the proper operation of radio receivers or
Essentially, suppression is attained by providing
other electronic equipment, or enable the enemy
a low resistance path to ground stray currents.
to locate the equipment.
Methods used include shielding the ignition and
high-frequency wires, grounding the frames with
terference suppression" as used herein applies to
