TM 5-4940-228-14
Table 3-2. Operator Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Engine f ails to start or fails to continue running.
Step 1. Check level of gasoline in gasoline tank. If engine still fails to start, refer to
TM 5-2805-257-14.
2. Air pressure at receiver gage below 65 psi.
Step 1. Check connections, fittings and hoses for obvious leaks.
Step 2. Check unloader pilot valve for unloaded position.
Step 3. Check drain valves on pulsation chamber and compressor pulsation tank.
Step 4. Check belt tension.
Stop engine, remove belt guard. If tension is low, loosen engine mounting bolts and
adjust tension.
3. Insufficient air pressure buildup in pressure (paint) tank.
Step 1. Check for loose tank lid.
Tighten lid.
Step 2. Check lid gasket for damage.
Replace gasket.
Step 3. Check lid passages for paint build up.
Clean paint covered lid with paint thinner.
4. Fluid leakage from spray gun nozzle.
Step 1. Check for proper seating of fluid needle.
Loosen packing nut slightly.
Step 2. Check paint for lumps and skins.
Strain paint and clean fluid hose.
Step 3. Check for accumulation of dried paint on inside of fluid nozzle.
Remove fluid nozzle and soak in paint thinner.
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