BENDIX SR-5 TRAILER SPRING BRK VALVE Installation Instructions Manual - Page 2

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BENDIX SR-5 TRAILER SPRING BRK VALVE Installation Instructions Manual

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

DRM

dryer reservoir module, or a Bendix

™

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

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.

AD-IS

air dryer system, a Bendix

AD-9si

brand replacement parts,

GENERAL

This instruction sheet is intended to provide the necessary

information to service the Bendix

valve with an internal check valve

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

air

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.)

OVER-ROTATING THE COVER MAY ALLOW THE

CONTROL PISTON AND RETURN SPRING TO COME

OUT OF THE VALVE.

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.

SR-5

trailer spring brake

™

cartridge.

ATTENTION

IF THIS HAPPENS, REMOVE

This is in