BENDIX AD-1 Service Data - Page 12

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BENDIX AD-1 Service Data
®
Figure 16 – Bendix
AD-2
15. Lubricate and install the two cap nut o-rings.
16. Lubricate the cap nut threads and the cap nut bore
of the end cover and install the cap nut, torquing it to
180–250 in-lbs.
17. Secure the exhaust diaphragm to the exhaust cover
using the #6-32 Phillips head screw and diaphragm
washer.
18. Secure the exhaust cover to the purge valve hex head
cap nut using the #6-32 Phillips head screws.
19. Lubricate and install the large diameter o-ring around
the end cover assembly.
REBUILDING THE BENDIX
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.)
HEATER POST
9
A
B
THERMOSTAT
COVER
1
Figure 17 – Heather and Thermostat
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®
Air Dryer End Cover
®
®
AD-2
AIR DRYER
8
5
3
6
2
4
1
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 fi lm 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 in-lbs.
10. Reinstall the check valve in the AD-2 air dryer outlet
port and reconnect the line leading to the fi rst reservoir.
REINSTALLING THE DESICCANT CARTRIDGE
IN THE 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 fi lm 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 in-lbs or 32 ft-lbs torque.
1
3. Check the end cover o-ring to be certain it is clean and
9
lubricate the o-ring with a barium base lubricant such as
Bendix piece number 246671. Install the o-ring on the
10
end cover and install the end cover in the dryer body.
7
4. Position the end cover as marked during removal and
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install the retainer ring so that the gap in the ring is
within an inch of the notch in the body.
5. Grease the threads on the three cap screws and
reinstall them with their retainers in the end cover.