Bendix Commercial Vehicle Systems R-14 RELAY VALVES 5/10 - Manual (Page 5)

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5. Inspect the exhaust seat of the quick release diaphragm
in the R-14 ® valve cover and make sure all internal air
passages in this area are open and clean and free of
nicks and scratches.
6. Replace all parts not considered serviceable during
these inspections and all springs and rubber parts. Use
only genuine Bendix replacement parts, available from
any authorized Bendix parts outlet.
ASSEMBLY
Note: All torques specifi ed in this manual are assembly
torques and can be expected to fall off slightly after
assembly. Do not re-torque after initial assembly torque
falls. For assembly, hand wrenches are recommended.
Prior to assembly, lubricate all o-rings, o-ring bores and
any sliding surface with a silicone lubricant equivalent to
Dow Corning #10.
1. Install large piston o-ring on piston.
2. Install inner and outer o-rings in the exhaust cover
assembly.
3. Install the sealing ring on the cover.
4. Install piston in body, taking care not to damage the
piston o-ring.
5. Noting the reference marks made during disassembly,
install the cover on the valve body and the mounting
bracket on the cover.
6. Secure the mounting bracket and cover to the body
using the four (4) cap screws and lock washers. Torque
to 80-120 inch pounds.
7. Install the valve retainer on the inlet/exhaust valve and
install in the body.
8. Install the inlet/exhaust valve return spring in the body.
9. Install the exhaust cover assembly in the body, taking
care not to damage the o-ring.
10. While depressing the exhaust cover, install the retaining
ring. Make certain the retainer is completely seated in
its groove in the body.
11. Install the R-14 ® valve service port cap nut o-ring on
the cap nut.
12. Install the diaphragm in the R-14 ® valve cover making
certain it is positioned between the guide ribs in the
cover.
13. Install the service port cap nut and torque to 150 inch
pounds.
14. If the quick release exhaust port was protected with an
exhaust cover, install the cover using the #10-24 Phillips
head screw. Torque to approx. 15-25 inch pounds.
15. Test the valves as outlined in the Operational and
Leakage Test section before returning the valve to
service.
INSTALLATION
1. Clean air lines.
2. Inspect all lines and/or hoses for damage and replace
as necessary.
3. Install valve and tighten mounting bolts.
4. Connect air lines to valve (plug any unused ports).
5. Test valve as outlined in Operational and Leakage
Tests.
GENERAL SAFETY GUIDELINES
WARNING! PLEASE READ AND FOLLOW
THESE INSTRUCTIONS TO AVOID PERSONAL
INJURY OR DEATH:
When working on or around a vehicle, the
following general precautions should be observed
at all times.
1. Park the vehicle on a level surface, apply the
parking brakes, and always block the wheels.
Always wear safety glasses.
2. Stop the engine and remove ignition key when
working under or around the vehicle. When
working in the engine compartment, the engine
should be shut off and the ignition key should be
removed. Where circumstances require that the
engine be in operation, EXTREME CAUTION should
be used to prevent personal injury resulting from
contact with moving, rotating, leaking, heated or
electrically charged components.
3. Do not attempt to install, remove, disassemble
or assemble a component until you have read
and thoroughly understand the recommended
procedures. Use only the proper tools and observe
all precautions pertaining to use of those tools.
4. If the work is being performed on the vehicle’s
air brake system, or any auxiliary pressurized air
systems, make certain to drain the air pressure
from all reservoirs before beginning ANY work
on the vehicle. If the vehicle is equipped with
an AD-IS
® air dryer system or a dryer reservoir
module, be sure to drain the purge reservoir.
5. Following the vehicle manufacturer’s recommended
procedures, deactivate the electrical system in a
manner that safely removes all electrical power
from the vehicle.
6. Never exceed manufacturer’s recommended
pressures.
7. Never connect or disconnect a hose or line
containing pressure; it may whip. Never remove
a component or plug unless you are certain all
system pressure has been depleted.