Install the intake valve spring with the tang down.
Install the intake valve.
Install the intake valve seat with the flange side up.
Install the unloader valve cap spring.
Install the unloader valve cap.
Use high temperature grease (Accrolube Lubrication
TeflonŽ Grease or equivalent) to lubricate the outside
diameter of the cap.
The rectangular ring seal must be installed
with the grooved side up.
Install the rectangular ring seal.
Install the 0-ring seal.
Use clean engine oil to lubricate the 0-ring seal.
Install the unloader valve body.
Press the unloader valve body down to be
sure the tangs of the unloader valve cap are
in the three slots of the intake valve seat.
Do not over torque. Compressor damage will
Hold the unloader body down and install the two plain
washers and captive washer capscrews.
Tighten the capscrews.
Torque Value: 14 Nˇm [10 ft-lb]
Air Compressor Unloader Valve
Initial Check (012-013-001)
Air pressure must be released from system
before removing the air governor.
The illustrations shown will be of the SS
model single cylinder air compressor.
Differences in procedures for SS, QE and ST
Remove the air governor or air governor hose from the air
compressor unloader body.