TM 5-4310-352-14
CHAPTER 5
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE INSTRUCTIONS
Section I. REPAIR PARTS SPECIAL TOOLS AND EQUIPMENT
5-1. Special Tools and Equipment
5-2. Maintenance Repair Parts Repair parts and equip-
There are no special tools, or equipment, required for
ment covering direct and general support maintenance of
maintenance of the air compressor assembly.
the air compressor assembly are listed and illustrated in
TM 5-4310-352-24P.
Section II. TROUBLESHOOTING
may occur, not all tests or inspections and corrective ac-
5-3. General
tions. If a malfunction is not listed or is not corrected by
a. This section contains troubleshooting informa-
the listed corrective action, notify your Supervisor.
tion for locating and correcting most of the trouble that
may develop in the air compressor. Each malfunction for
an individual component is followed by a list of tests or
5-4. Troubleshooting
inspections which will help you determine probable
causes and suggested corrective actions to remedy the
find during the operation or maintenance of the air com-
malfunction.
pressor or its components. You should perform
b. This manual cannot list all malfunctions that
Table 5-1. Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Before you use this Table, be sure you have performed all normal operational checks. If you have a malfunction which is not listed in
this Table notify your supervisor.
1. COMPRESSOR PUMPING OIL
Step 1.
Check cylinders or piston for wear, scratches or scoring.
Replace defective cylinder or piston (para 6-6).
Step 2.
Check for piston rings broken, or not seated in.
Replace piston rings (para 6-6).
2. KNOCKS OR RATTLES
Step 1.
Check for carbon on top of piston.
Remove air heads and check piston (para 6-6).
Step 2.
Check for loose, broken or carbonized air finger valves.
Separate air heads from spacers and look finger valves over carefully (para 6-6). Replace defective finger valves
Step 3.
Check for worn or scored connecting rod, piston pin, or crank pin bushings.
Replace defective parts (para 6-6).
3. AIR DELIVERY DROPPING
Step 1.
Check for leaking, broken, carbonized or loose finger valves.
Tighten or clean leaking or carbonized valves. Replace defective valves (para 6-6).
Step 2.
Check for scratched, worn or scored cylinders or pistons.
Replace defective cylinder or piston (para 6-6).
Step 3.
Check for piston rings broken or not seated in.
Replace damaged piston rings (para 6-6).
4. MOTOR OVERLOAD RELAY TRIPS
Step 1.
Check line voltage.
Tighten loose connections. Replace defective fuses.
Step 2.
Check for leaking, broken, or carbonized valves, or restricted air passages.
Remove restriction from air passages. Repeat Step 1 of paragraph 3 above.
5-1
