TROUBLESHOOTING GUIDE

(continued)

PROBLEM

CAUSE

CORRECTION

Air leaks at check valve

Defective or dirty check valve.

A defective check valve results in a constant air

 

 

teak at the pressure reiease valve when there is

 

 

pressure in the tank and the compressor is shut off.

 

 

Remove and clean, OFreplace check valve. DO

 

 

NOT OVER-TiGHTEN.

Air leaks at pressure switch release valve

Air leaks in air tank

Air leaks from safety valve

Regulator knob - continu- ous air leak. Regulator will not shut-off at air outlet.

Knocking noise

Compressor is not supply-

ing enough air to operate accessories.

Defective pressure switch release valve.

Defective check valve.

Defective air tank.

Possible defect in safety valve

Dirty or damaged regulator inter- nat parts.

Defective check valve.

Loose pulley.

Low oil level.

Loose flywheel.

Loose compressor mounting screws.

Loose belt.

Carbon build up.

Prolonged excessive use of air.

Compressor is not large enough for air requirement.

Restricted air intake filter.

Remove and replace the release valve.

A defective check valve results in a constant air leak at the pressure release valve when there is

pressure in the tank and the compressor is shut off. Remove and clean, or replace check valve. DO NOT OVER-TIGHTEN.

Air tank must be replaced. Do not repair the leak.

DO NOT DRILL mNTO,WELD, OR OTHER- W_SE MODIFY AIR TANK OR mTWILL

WEAKEN.

Operate safety valve manually by pulling on ring. ff valve still leaks, it should be replaced.

Clean or replace regulator, or internal parts.

Remove and clean, or replace.

Tighten pulley set screw, (70-80 In.-Lbs.).

Maintain prescribed oil level. Add oil

Tighten screw. 15 to 20 ft. lbs.

Check screws. Tighten as required, (15-20 Ft.- Lbs.).

Tighten wing nut on motor mount until it contacts the washer, plus one more turn.

Remove the head and valve plate. Clean the valve plate and the top of the piston. (Be sure carbon

does not fall into the cylinder.) Reassemble using new gaskets and torque screws, 25 to 30 ft. Ibs.

Decrease amount of air usage.

Check the accessory air requirement, ff it is higher than the SCFM or pressure supplied by your air

compressor, you need a larger compressor.

Clean or replace air intake filter. Do not operate the

compressor in the paint spray or sand blasting area.

Hole in hose.

Check and replace.

 

 

 

Check valve restricted.

Remove

and ctean, or replace.

Air leaks.

Tighten

fittings.

(See

Air Leaks section of

 

 

Troubleshooting

Guide,

Pg. tl.)

2

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Craftsman 919.176730, 919.176830, 919.17673g owner manual Cause Correction, Weaken
Page 11 Page 13

919.176830, 919.17683, 919.17673g, 919.176730 specifications

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