Bendix Commercial Vehicle Systems AD-2 AIR DRYERS 7/04 User Manual
Page 12
12
FIGURE 17
FIGURE 16 - AD-2
™
AIR DRYER END COVER
31. Lubricate the cap nut threads and the cap nut bore of
the end cover and install the cap nut, torquing it to
180-250 inch pounds.
32. Secure the exhaust diaphragm to the exhaust cover using
the #6-32 Phillips head screw and diaphragm washer.
33. Secure the exhaust cover to the purge valve hex head
cap nut using the #6-32 Phillips head screws.
34. Lubricate and install the large diameter o-ring around
the end cover assembly.
REBUILDING THE AD-2
™
AIR DRYER OUTLET
PORT CHECK VALVE
1. Make certain the vehicle is safely parked. Block the
wheels if necessary.
2. Locate and remove the line connected to the outlet port
of the AD-2
™
air dryer.
3. Remove the check valve from the outlet port. (See Figure
2)
4. Remove the rubber sealing ring from the external
threaded portion of the body and discard it.
5. Disassemble the check valve by unscrewing the body
halves and note the order of the removal of the parts.
6. Discard and replace the check valve, valve spring and
metal seal washer.
7. Wash all parts in a quality commercial solvent, making
sure all surfaces are clean and dry prior to reassembly.
8. Coat all parts with a film of barium base lubricant such
as Bendix piece number 246671 which is supplied with
the maintenance kit.
9. Reassemble the check valve and torque the body halves
to between 200 and 225 inch pounds.
10. Reinstall the check valve in the AD-2
™
air dryer outlet
port and reconnect the line leading to the first reservoir.
REINSTALLING THE DESICCANT CARTRIDGE
AD-1
™
AND AD-2
™
AIR DRYER
1. Wipe the inside of the dryer clean. If a solvent is used,
be certain that no residue is left in the shell.
2. Check to be certain a film of barium base grease is
present on the o-rings and install the cartridge and purge
plate assembly into the body. Engage the bolt and tighten
to 375 inch pounds or 32 foot pounds torque.
3. Check the end cover o-ring to be certain it is clean and
lubricate the o-ring with a barium base lubricant such as
Bendix 246671. Install the o-ring on the end cover and
install the end cover in the dryer body.
HEATER POST
9
A
B
1
8
5
3
2
1
4
6
11
7
10
9
1
THERMOSTAT
COVER