TM 5-4310-275-14
Section Ill. TROUBLESHOOTING
b. This manual cannot list all malfunctions
3-5. General
that may occur, nor all tests or inspections, and
a. This section contains troubleshooting in-
corrective action, If a malfunction is not listed or
formation for locating and correcting most of the
is not corrected by tested corrective actions,
operating troubles which may develop in the
notify your supervisor.
compressor. Each malfunction for an individual
component, unit, or system is followed by a list of
tests or inspections which will help to determine
Refer to Table 3-2 for troubleshooting pertaining
probable causes and corrective action to be taken.
to operator's maintenance.
Perform the tests/inspections and corrective
actions in the order listed.
Table 3-2. Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE FAILS TO START OR IS HARD TO START
Step 1. Fuel for an empty tank.
Fill fuel tank.
Step 2. Check for a dirty fuel system.
Service fuel filter.
Step 3. Remove and inspect the air cleaner.
Service the air cleaner.
2. ENGINE STARTS BUT FAILS TO CONTINUE RUNNING.
Step 1. Check for an insufficient fuel supply.
Replenish fuel supply.
Step 2. Remove and inspect the air cleaner.
Service the air cleaner.
3. ENGINE MISSES OR RUNS ERRATICALLY
Step 1. Check for an improperly or defective carburetor.
Adjust or replace carburetor.
Step 2. Check fuel filter to see if it is clogged or filter element is dirty.
Remove and clean the filter.
4. INSUFFICIENT AIR FLOW, LOW OUTLET PRESSURE, OR EXCESSIVE PUMPUP TIME
Step 1. Check for restricted air inlet to compressor first stage cylinder.
Clean or replace intake filter.
Step 2. Check for partially closed shut-off valve to air receiver.
Open valve.
5. COMPRESSOR OVERHEAT
Step 1. Check for low oil supply.
Replenish oil supply.
Step 2. Check for insufficient or obstructed flow of cooling air.
Position cart to provide adequate flow of air. Open access doors.
6. EXCESSIVE MOISTURE OR OIL VAPOR IN HIGH PRESSURE AIR
Step 1. Check for a saturated desiccant cartridge.
Replace cartridge.
Section IV. MAINTENANCE PROCEDURES
3-8. Engine Service
3-7. General
Refer to TM 5-2805-257-14 for engine service
Instructions in this section are published for the
instructions.
information and guidance of the operator to
maintain the compressor assembly.
a. Refer to Figure 3-4 and service the fuel tank.
