BENDIX AD-2 AIR DRYER Manual - Halaman 10

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DISASSEMBLY

REBUILDING THE AD-1

COVER ASSEMBLY

To remove the end cover assembly from the air dryer follow

steps 1-6 under the section of this manual entitled Removal

of Desiccant Cartridge AD-1

rebuilding the end cover, clean the exterior thoroughly using

a quality commercial solvent.

1. Remove and discard the large o-ring around the end

cover.

2. Remove the exhaust elbow and clamp.

3. Remove the cap nut and discard the cap nut o-ring.

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 o-rings from the plunger.

Clean the plunger.

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.

™

AIR DRYER END

™

and AD-2

™

air dryer. Before

FIGURE 15-1

FIGURE 15-2

11. Remove the square cut seal ring at the bottom of the

thermostat bore.

12. Remove the screw, retaining clip, o-ring, and the heater

element. Inspect the bore for corrosion and if necessary,

clean it.

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.