Graco 3A0595D important safety instructions Troubleshooting, Problem Cause Solution

Troubleshooting

Problem	Cause	Solution
Engine will not start.	Various engine problems.	Refer to the engine manual accom-
		panying your unit.
	Low engine oil level.	Engine is equipped with an Oil Alert
		System which will not allow the
		engine to start if oil level is low. Add
		oil, if needed.
Noisy operation.	Loose engine pulley or pump fly-	Tighten pulley and or flywheel.
	wheel.
	Lack of oil in the pump.	Add correct amount of oil. Check
		for bearing damage.
	Carbon deposits on pistons or	Remove cylinder head and inspect.
	valves.	Clean or replace.
	Bearing, piston or connecting rod	Stop the air compressor. Contact
	failure.	Graco Customer Service.
Pressure drop in air tank or rapid	Air leaks at connections.	Allow air compressor to build
pressure loss when air compres-		pressure to the maximum allowed.
sor is shut off.		Turn off and brush a soapy wa-
		ter solution onto all connections.
		Check connections for air bubbles.
		Tighten the connections where
		leaks are present.
	Air leak in air tank.	Air tank must be replaced. DO NOT
		attempt to repair air tank.
	Defective Pilot Valve.	Clean or replace.
Insufficient pressure at air tool or	Pressure Regulator not turned to	Adjust Pressure Regulator to
accessory.	high enough pressure or defective.	proper setting or replace.
	Restricted air intake.	Clean or replace Air Intake Filter.
	Air leaks or restrictions.	Check for leaks and repair.
	Hose or hose connections are too	Replace with larger hose or con-
	small or long.	nectors.
	Slipping belt.	Tighten or replace.
	Air compressor is not large enough	Check the accessory air require-
	for air requirement.	ment. If it is higher than the CFM or
		pressure supply to the air compres-
		sor, use a larger air compressor.
	Restriction in Pilot Valve	Clean or replace.
Air leaks from Safety Relief Valve.	Possible defective Safety Relief	Operate Safety Relief Valve manu-
	Valve.	ally by pulling on ring. If it still
		leaks, it should be replace.
	Excessive air tank pressure.	Clean, reset or replace Pilot Valve.
Air leaks at pump.	Defective gaskets.	Torque head bolts: Single Stage=17
		ft./lbs. Two Stage=33 ft./lbs.
Air blowing from Air Intake Filter.	Defective inlet (reed) valve.	Contact Graco Customer Service.
Moisture in discharge air.	Condensation in air tank caused by	Run air compressor a minimum of
	high level of atmospheric humidity	one hour to prevent condensation
	or air compressor is not run long	buildup. Drain air tank after every
	enough.	use. Drain air tank more often in
		humid weather and use an air line
		filter.