20 Most Recent Craftsman 1/2" Impact Wrench - Page 5 Questions & Answers


Shorten the cord or use a father one. Typical for voltage drop in loaded motors.

Craftsman Air... | Answered on Aug 10, 2017


Is there pressure in the tank already? The reset is usually on the end of the motor.
The pressure switch, a diaphragm pushes against an adjustable tension spring. Less spring tension cuts the motor out at lower pressure, more tension at a higher pressure. Has this adjustment been used? It may have a second adjustment, either nut or screw, that adjusts the pressure differential between cut in and cut out.

Craftsman Air... | Answered on Aug 10, 2017


Usually there is a leak some where. turn off and watch pressure to see if it drops and listen for any air leak. you should not hear anything.

Craftsman Air... | Answered on Jun 22, 2017


Have you tried oiling the unit. Sometimes putting a bit of 3 in 1 oil or wd 40 in the air intake will loosen the parts so they work correctly.

Craftsman Air... | Answered on Jun 14, 2017


That motor has been discontinued. You might try and replace start capacitor and if it has run capacitor replace it also. From experience I found that is cheaper to junk unit and buy a new one. You wouldn't want spend a couple hundred dollars on motor.

Craftsman Air... | Answered on Apr 24, 2017


NO. If your tank leaks from pinholes you could try and braze the closed

Craftsman Air... | Answered on Apr 17, 2017


possibly an installation problem
most control units screw directly into the tank and the pressure is read directly to the diaphragm that controls the switching
check if the bleeder line is supposed to be attached to the control unit at all
unless you have a peculiar set up the compressor line goes to a nonreturn valve into the tank
there is a relief valve in the tank that blows off when dangerous pressures are reached ( around 120 psi)
there is a fitting where the control screws in and that reads tank pressure to control the on/off of the motor

Craftsman Air... | Answered on Apr 17, 2017


It will leak until head pressure is drained. I'd it keeps bleeding until late no more air in than your tank check is bad

Craftsman Air... | Answered on Apr 02, 2017


common problems are
failed poppet valves or reed valves
broken springs for poppet valves
failed non return valve in the pipe to the tank
pull the head/s and check the poppet valves or reed valves

Craftsman Air... | Answered on Nov 28, 2016


And that most likely burned out the engine bearings.

Craftsman Air... | Answered on Sep 07, 2016


check the amps requirements for the compressor, it should be at least 20 amp breaker without much else on it running at the same time.See what else goes off when breaker trips

Craftsman Air... | Answered on Apr 13, 2016


Is it oil less ? If it's a cast pump with oil it requires full power no little cheap extension cords. Could be out of oil. If oil less it maybe done

Craftsman Air... | Answered on Apr 13, 2016


It should be a valve plate. You can get them at local air house.

Craftsman Air... | Answered on Apr 10, 2016

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