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Problem ..........................................................................................................................................
Code
Knocking Noise ..........................................................................................................................
6, 13, 14, 15, 16, 17, 18, 19
Excessive belt wear ...................................................................................................................
13,14,16,19,20
Squealing sound ........................................................................................................................
13
Engine will not run .....................................................................................................................
21,22,
23, 34
Pressure reading on the regulated pressure gauge drops when an accessory is used ........... 24
Regulator knob has continuous air leak ....................................................................................
25
Regulator will not shut off air outlet ...........................................................................................
25
Moisture in pump crankcase ......................................................................................................
2, 5, 11,26, 27, 28, 29, 30, 31
Pump will not run .......................................................................................................................
32
Air tank pressure will not build ...................................................................................................
32, 33
Troubleshooting
Codes
CODE
POSSIBLE CAUSE
POSSIBLE SOLUTION
1
Unloader valve does not release pressure when air
Unloader valve must be replaced. Contact a DEWALT factory
tank reaches blow-off
pressure
service center or a DEWALT authorized service center.
Fitt !rig s are not tigh t
Tighten fittings where air can be heard escapingl Check fittings
'.
with soapy water solution. DO NOT OVERTIGHTEN.
3
Defective unloader valve
Turn off engine, rotate manual lock unloader lever to the closed
perpendicular position. If air leaks out of air tank through unloader
valve, replace unloader valve.
Defective air tank
Air tank must be rep!aced,
Do n0t repair the !eak,
I
_WARNING:Riskofbursting.
Do notdrillinto,
weldorotherwise
I
modifyairtankoritwillweaken.
Theairtankcanruptureor
explode.
21
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