Bendix Commercial Vehicle Systems AD-IS AIR DRYER AND RESERVOIR SYSTM - Manual (Page 10)

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FIGURE 6 - BENDIX ® AD-IS ® AIR DRYER AND RESERVOIR SYSTEM DELIVERY CHECK VALVE
GOVERNOR GASKET
(SPECIAL GASKET,
SEE ASSEMBLY NOTE 6) GOVERNOR
(NON-ADJUSTABLE,
130 PSI CUT-OUT)
BOLTS
ADAPTER
LARGE
O-RING
SPRING
CHECK VALVE
BODY
SMALL
O-RING
DELIVERY CHECK VALVE CLEANING PROCEDURE
(
Note: This is only required if system pressure does not
build after temporary bypass is completed.)
Refer to Figure 6 throughout the following procedures.
De-pressurize the air brake system following the general
safety precautions outlined elsewhere in this document.
Also, always de-pressurize the air dryer purge reservoir
before servicing the air dryer.
This procedure does not require removal of the Bendix
®
AD-IS ® air dryer and reservoir from the vehicle.
1. Remove the line from the governor and mark for easy
re-installation.
2. Remove the bolts attaching the governor to the
AD-IS air dryer and reservoir system and retain for
re-assembly.
3. Remove the governor from the air dryer. Be aware that
a short puff of trapped air may vent when the governor is
removed. Retain the governor gasket for re-assembly if
a new governor gasket is not available. Remove and
retain the o-ring from the adapter.
4. The spring/delivery check valve can now be removed.
5. Remove and retain the o-ring from the check valve
body.
CLEANING & INSPECTION
1. Use a suitable solvent to clean all metal parts, and
use a cotton swab to clean the bore (Note: Do not use
abrasives or tools to clean the bore: any scratches
caused may necessitate replacing the Bendix ®
AD-IS ® air dryer and reservoir system.) Superficial
external corrosion and/or pitting is acceptable.
2. Clean the o-rings with a clean dry cloth. Do not use
solvents.
3. Inspect for physical damage to the bore and the check
valve seat. If the bore is damaged (by scratches etc.
that would prevent delivery check valve from seating),
replace the AD-IS air dryer.
4. Inspect the delivery check valve, o-rings, etc. for wear or
damage. Replace, if necessary, using the check valve
replacement kit available at any authorized Bendix parts
outlets.
5. Inspect all air line fittings for corrosion and replace as
necessary.