Put some of the lubricant from repair kit on the
threads of cap nut (34). Install the purge valve
assembly and tighten to a torque of 180 to 250
lb. in. (20 to 28 Nm).
Install the cover (27), a new diaphragm (25) and
the washer and screw (24).
The heater and thermostat are not
serviced. If there is a defect in the
heater and thermostat, install a new
end cover assembly. DO NOT
remove the cover (38).
If the check valve in the outlet passage is to be
removed while the air dryer is on the machine,
do the following.
Make sure the machine is in a safe place
on level ground. Put blocks in front and in
equipment to the ground.
Shut off the engine and let all of the air
pressure out of the air system.
Disconnect the air line from the check
valve outlet passage.
Remove the check valve assembly (39).