2
GENERAL
This instruction sheet is intended to provide the necessary
information to service the Bendix
®
SR-5
™
trailer spring brake
valve with an internal check valve cartridge
.
This is in
connection with Recall Campaign number 16E045.
This kit contains a check valve cartridge (1), a green tie wrap
(2) and one cover screw (3). The cover screw (3) is included
in the event one is damaged or lost during the installation
process.
PREPARATION
1. Use a wire brush to clean the exterior of the SR-5 valve
especially around the control piston cover. Use compressed
air to blow away loose debris to ensure that the valve does
not become contaminated when serviced.
2. Verify that the valve does not have a black or green tie
wrap already through the SR-5 identification hole. If a tie
wrap is present, this valve has already been serviced with
this kit. Return the vehicle into service.
3. Verify the valve meets the recall criteria as outlined in the
RECALL GUIDELINES section of this document. If the
valve falls outside of these parameters, return the vehicle
to service.
DISASSEMBLY
The installation of this kit requires that the control piston cover
be loosened, but not completely removed from the valve body.
1. Identify and disconnect all the air lines connected to the
control piston cover.
(Refer to Figure 4.)
2. It is necessary to rotate the fitting in the trailer supply port
to complete this step. Rotate the fitting counterclockwise
only (loosening) no more than 90°.
(Refer to Figure 3.)
3. Remove cover screws "B", "C", and "D". While holding
the control piston cover in place, loosen cover screw "A"
4-5 turns. Carefully rotate the cover clockwise – pivoting
on screw "A" – until the check valve passage in the body is
visible. Hold the cover in this position to retain the control
piston in the body.
(Refer to Figure 5.)
ATTENTION
OVER-ROTATING THE COVER MAY ALLOW THE
CONTROL PISTON AND RETURN SPRING TO COME
OUT OF THE VALVE. IF THIS HAPPENS, REMOVE
ANY DEBRIS THAT MAY ADHERE TO THE PISTON AND
REINSERT, SPRING FIRST.
(Refer to Figure 7.)
4. Exercise caution to prevent damage to the cover seal as
shown in Figure 6.
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
guidelines should be observed AT ALL TIMES:
▲
Park the vehicle on a level surface, apply the parking
brakes and always block the wheels. Always wear personal
protection equipment.
▲
Stop the engine and remove the 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.
▲
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.
▲
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 a Bendix
®
AD-IS
®
air dryer system, a Bendix
®
DRM
™
dryer reservoir module, or a Bendix
®
AD-9si
®
air
dryer, be sure to drain the purge reservoir.
▲
Following the vehicle manufacturer’s recommended
procedures, deactivate the electrical system in a manner
that safely removes all electrical power from the vehicle.
▲
Never exceed manufacturer’s recommended pressures.
▲
Never connect or disconnect a hose or line containing
pressure; it may whip and/or cause hazardous airborne
dust and dirt particles. Wear eye protection. Slowly open
connections with care, and verify that no pressure is
present. Never remove a component or plug unless you are
certain all system pressure has been depleted.
▲
Use only genuine Bendix
®
brand replacement parts,
components and kits. Replacement hardware, tubing, hose,
fi ttings, wiring, etc. must be of equivalent size, type and
strength as original equipment and be designed specifi cally
for such applications and systems.
▲
Components with stripped threads or damaged parts should
be replaced rather than repaired. Do not attempt repairs
requiring machining or welding unless specifi cally stated
and approved by the vehicle and component manufacturer.
▲
Prior to returning the vehicle to service, make certain all
components and systems are restored to their proper
operating condition.
▲
For vehicles with Automatic Traction Control (ATC), the ATC
function must be disabled (ATC indicator lamp should be
ON) prior to performing any vehicle maintenance where
one or more wheels on a drive axle are lifted off the ground
and moving.
▲
The power MUST be temporarily disconnected from the
radar sensor whenever any tests USING A DYNAMOMETER
are conducted on a vehicle equipped with a Bendix
®
Wingman
®
system.
▲
You should consult the vehicle manufacturer's operating
and service manuals, and any related literature, in
conjunction with the Guidelines above.
