BENDIX RV-4 PRESSURE REDUCING VALVE Deskripsi Umum - Halaman 2

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PREVENTIVE MAINTENANCE

Important: Review the Bendix Warranty Policy before

performing any intrusive maintenance procedures. A warranty

may be voided if intrusive maintenance is performed during

the warranty period.

No two vehicles operate under identical conditions, as a

result, maintenance intervals may vary. Experience is a

valuable guide in determining the best maintenance interval

for air brake system components. At a minimum, the RV-4

valve should be inspected every 6 months or 1500 operating

hours, whichever comes first, for proper operation. Should

the RV-4

™

valve not meet the elements of the operational

tests noted in this document, further investigation and service

of the valve may be required.

OPERATING & LEAKAGE TESTS

OPERATING

Connect an accurate test gauge in the supply and delivery

™

lines of the RV-4

valve. Make certain that supply air

pressure is at the vehicle manufacturers recommended level.

Delivery pressure should be within plus or minus 5 p.s.i. of

the delivery pressure specified for the RV-4

the valve should be repaired or replaced. If the valve meets

this operating test, proceed to the leakage tests. Do not

remove the gauges at this time.

LEAKAGE

With supply pressure at the level recommended by the vehicle

manufacturer, apply a soap solution to the 1/4" N.P.T. plug

in the control port, around the supply port and to the exhaust.

Leakage should not exceed a 1" diameter bubble in 3

seconds (175 SCCM). If leakage is excessive, the valve

should be repaired or replaced and the operating and leakage

tests performed at the time of repair or replacement. Proceed

to the "Removal and Installation" instructions. This concludes

the operation and leakage tests and the test gauges should

be removed.

WARNING! PLEASE READ AND FOLLOW

THESE

INSTRUCTIONS

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

4. If the work is being performed on the vehicle's air

™

5. Following

6. Never exceed manufacturer's recommended

7. Never connect or disconnect a hose or line

8. Use only genuine Bendix

™

valve. If not,

9. Components with stripped threads or damaged

10. Prior to returning the vehicle to service, make

REMOVAL & INSTALLATION

REMOVAL

1. Hold the vehicle on a level surface by means other than

2. Remove all air pressure from all reservoirs.

AVOID

3. Identify, mark and then disconnect all air lines

4. Remove the valve.

INSTALLATION

1. Inspect and clean all air lines that connect to the valve.

2. Clean the vehicle valve mounting area and mount the

3. Reconnect the air lines according to the identification

DISASSEMBLY (Refer to Figure 2)

1. Remove exhaust cover screw (1), exhaust cover (2), and

2. Remove four cap screws (4) with lockwashers (5) and

3. Remove control piston (7).

thoroughly understand the recommended

procedures. Use only the proper tools and observe

all precautions pertaining to use of those tools.

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.

the

vehicle

recommended procedures, deactivate the

electrical system in a manner that safely removes

all electrical power from the vehicle.

pressures.

containing pressure; it may whip. Never remove a

component or plug unless you are certain all

system pressure has been depleted.

components and kits. Replacement hardware,

tubing, hose, fittings, etc. must be of equivalent

size, type and strength as original equipment and

be designed specifically for such applications and

systems.

parts should be replaced rather than repaired. Do

not attempt repairs requiring machining or welding

unless specifically stated and approved by the

vehicle and component manufacturer.

certain all components and systems are restored

to their proper operating condition.

the air brakes.

attached to the valve.

valve.

marks made during removal.

exhaust diaphragm (3).

cover (6).

™

manufacturer's

replacement parts,