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This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or
maintenance personnel can perform some corrective actions, and others may require the assistance of a qualified D
your dealer.
Problem
Excessive air tank pressure-safety valve pops off ......................................................................1
Air leaks .................................................................................................................................... 2
Continuous air leak at unloader valve. ...................................................................................... 3
Air leaks in air tank or at air tank welds .................................................................................... 4
Air leaks between head and valve plate .................................................................................... 5
Air leaks from safety valve ......................................................................................................... 6
Compressor is not supplying enough air to operate accessories ............................................ 2, 7, 8, 9, 10, 12, 13
Restricted air intake. .................................................................................................................. 12
Excessive vibration .................................................................................................................... 14
Knocking Noise ......................................................................................................................... 6, 13, 14, 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 Guide
24
WALT technician or
e
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