Snap-On 870765C Mode D'emploi page 14

EXCESSIVELY NOISY OPERATION:
PROBABLE CAUSE:
Lack of oil in the pump
crankcase.
Bearing, piston or connecting
rod failure.
Worn connecting rod.
Noisy check valve.
WHEN IN THE START / STOP OPTION, MOTOR RUNS CONTINUOUSLY:
PROBABLE CAUSE:
Motor/Pressure switch does
not shut off motor when air
compressor reaches "cut-out"
pressure and safety relief
valve activates
Air compressor is incorrectly
sized.
OVERHEATING:
PROBABLE CAUSE:
Poor ventilation
Dirty cooling fins.
AIR CONTINUES TO LEAK AT MOTOR/PRESSURE SWITCH RELEASE VALVE
AFTER MOTOR STOPS:
PROBABLE CAUSE:
Defective pilot valve, the check
valve is stuck open.
SOLUTION:
Check oil level. If low, check for possible
bearing damage. Add correct amount of oil.
STOP THE COMPRESSOR! Contact
Consumer Service at 1-866-984-7627.
Replace with new connecting rod.
Contact Consumer Service at 1-866-984-7627.
SOLUTION:
Contact Consumer Service at 1-866-984-7627.
Limit the air pressure to the capacity of the air
compressor. Either use a smaller tool or a
larger air compressor.
SOLUTION:
Relocate the air compressor to an area with an
ample supply of cool, dry, and well-circulated
air is available.
Clean the outer surfaces of the cooling fins on
the pump and motor assembly.
SOLUTION:
Contact Consumer Service at 1-866-984-7627.
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AIR CONTINUES TO LEAK AT MOTOR/PRESSURE SWITCH RELEASE VALVE
WHILE MOTOR IS RUNNING:
PROBABLE CAUSE:
Defective motor/pressure switch Replace.
Check valve stuck in open
position.
AIR LEAKS FROM SAFETY RELIEF VALVE:
PROBABLE CAUSE:
Possible defective safety
relief valve.
Excessive tank pressure.
AIR LEAKS AT PUMP:
PROBABLE CAUSE:
Blown gaskets.
AIR LEAKS AT FITTINGS:
PROBABLE CAUSE:
Fittings are not tight enough.
AIR LEAKS IN AIR TANK:
PROBABLE CAUSE:
Defective or rusted air tank.
AIR BLOWING FROM INLET FILTER:
PROBABLE CAUSE:
Damaged inlet (reed) valve.
SOLUTION:
Contact Consumer Service at 1-866-984-7627.
DANGER– Do not disassemble the check valve
with tank pressurized. Open tank petcock
valve to allow air to escape from tank prior to
servicing.
SOLUTION:
Operate safety relief valve manually by pulling
on ring. If it still leaks, it should be replaced.
Defective motor/pressure switch. Replace.
SOLUTION:
Replace blown gaskets and torque head bolts
to 20 ft./lbs. CAUTION– Replace head gasket
with a new one each time the head is removed
to ensure proper sealing.
SOLUTION:
Tighten fittings where air can be heard
escaping. Check fittings with soapy water
solution. DO NOT OVERTIGHTEN.
SOLUTION:
Air tank must be replaced. DO NOT ATTEMPT
TO REPAIR AIR TANK!
SOLUTION:
Contact Consumer Service at
1-866-984-7627.
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