Bendix Commercial Vehicle Systems AD-IS EVERFLOW ASSEMBLY - Manual (Page 9)

9
ASSEMBLY
1. Lubricate the smaller o-ring and check valve body with
barium or silicon grease.
2. Install this o-ring on the check valve body by sliding
the o-ring over the set of 4 tapered guide lands. The
o-ring groove holds the o-ring in its correct location.
3. At the other end of the check valve body, the spring is
installed over the set of 4 straight guide lands. When
the spring has been pushed to the correct location, the
check valve body is designed to hold the end of the
spring in position - be sure that the spring is not loose
before continuing with this installation.
4. Install the assembled check valve body/o-ring/spring
in the delivery port so that the o-ring rests on its seat
and the free end of the spring is visible.
5. Grease the adapter and the remaining larger o-ring and
install it onto the fi tting.
6. Position gasket, insert bolts through the governor and
tighten (to 125 in-lbs). (Note: Do not replace with a
standard compressor/governor gasket.)
7. Reattach line to the governor.
8. Before placing vehicle back into service, check to see
that the system pressure now builds to full operational
pressure.
FIGURE 6 - AD-IS ® AIR DRYER DELIVERY CHECK VALVE
GOVERNOR GASKET
(SPECIAL GASKET,
SEE NOTE 6)
GOVERNOR
(NON-ADJUSTABLE,
130 PSI CUT-OUT)
BOLTS
ADAPTER
LARGE
O-RING
SPRING
CHECK VALVE
BODY
SMALL
O-RING
TESTING THE EVERFLOW ™ ASSEMBLY AIR DRYERS
Before placing the vehicle in service, perform the following
tests.
1. Close all reservoir drain valves.
2. Build up system pressure to governor cut-out and note
that one of the AD-IS ® EverFlow ™ Assembly air dryers
purges with an audible burst of air, followed immediately
by approximately 30 seconds of air fl owing out of the
purge valve.
3. “Fan” the service brakes to reduce system air pressure
to governor cut-in. Note that the system once again
builds to full pressure and is followed by a purge at the
other AD-IS
® EverFlow ™ assembly air dryer exhaust.
4. It is recommended that the total air system be tested for
leakage to assure that the AD-IS ® EverFlow ™ assembly
air dryers will not cycle excessively.
See Bendix publication BW5057 “Air Brake Handbook.”