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TROUBLESHOOTING CHART
How to Service the Head, Valve Plate Assembly and Connecting
Rod and Bearing Assembly.
- Disconnect the power.
- Disconnect all air lines and remove compressor from the enclosure.
- Remove all screws (1) that fasten the head (2) to the compressor housing.
- Carefully separate the head from the compressor body.
- Carefully separate the valve plate assemblies (4) from the heads.
- Remove the head gasket O-rings (3) and replace.
- Turn the valve plates over and replace the valve plate gasket O-rings (5).
Removing the Flapper Valves.
- If you are replacing a flapper valve on the top side of the valve plate (side facing the head), remove the flapper valve screw (1) with a 1/4" hex socket, lift off the valve keeper strip (2), lift off the valve restraint (3), and lift off the flapper valve (4).
- Remove any debris from the valve plate with a damp, lint free cloth. (Soaps and detergents should not be used due to the potential for corrosion from soap residue.)
- Place the valve plate on the compressor housing and orient it as illustrated. Note the orientation of the valve ports.
- Orient a new flapper valve (1) over Port 1. Observe the location of the notches (2) at the end of the flapper valve.
- Place a valve restraint (3) over the flapper valve.
- Place a valve keeper strip (4) over the valve restraint observing that the word “UP” is facing you and oriented as shown in the illustration.
- Line up the screw holes in all of the valve components and insert the flapper valve screw (5) into the valve plate.
- Make sure the flapper valve is centered over the port and that all of the other components line up with the flapper valve.
- Do not over tighten the flapper valve screw or it will shear off in the valve plate.
- Tighten the flapper valve screw to 18 inch pounds, using a torque wrench with a 1/4" hex socket attachment.
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