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DISASSEMBLY
REBUILDING THE AD-1™ AIR DRYER END COVER ASSEMBLY
To remove the end cover assembly from the air dryer follow steps
1.Remove and discard the large
2.Remove the exhaust elbow and clamp.
3.Remove the cap nut and discard the cap nut
4.Place the handle of a large screwdriver in a vise and secure it.
5.Place the slot in the plunger (cap nut end) over the blade of the screwdriver, hold it securely and remove the nut from the plunger using a 1/2" socket wrench.
6.Remove the plunger, spring and valve. Discard the valve.
7.Clean and inspect the plunger bore and the valve seat.
8.Remove and discard the three
NOTE: If during the serviceability checks it was determined that the heater and thermostat were defective, use the following procedure. It is not necessary to replace this assembly each time the purge valve is rebuilt.
FIGURE 14
9.Remove the two screws that secure the shield or thermostat retaining clip to the end cover.
10.Remove the shield or clip and the thermostat and inspect the bore for corrosion.
FIGURE
FIGURE
11.Remove the square cut seal ring at the bottom of the thermostat bore.
12.Remove the screw, retaining clip,
ASSEMBLY
13.Install the heater element, securing it in the end cover with the retainer clip and screw.
14.Install the square cut seal ring in the thermostat bore.
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