BENDIX TCS-9000 CONTROL BRAKE VALVE Manuel - Page 2

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PREVENTIVE MAINTENANCE

Important: The TCS-9000

serviceable.

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

TCS-9000

™

valve should be inspected every 6 months or

1500 operating hours, whichever comes first, for proper

operation. Should it not meet the elements of the operational

tests noted in this document, further investigation and

replacement of the valve may be required.

REMOVING AND INSTALLING

Secure the vehicle with spring brakes or blocks. Drain the

reservoir which supplies the TCS-9000

fasteners which secure the mounting bracket to the panel.

Mark and disconnect the connecting air lines. Remove the

valve.

INSTALLING

A typical piping arrangement for the TCS-9000

shown in Figure 3. Check connecting air lines for integrity

and foreign material. Replace the lines if necessary.

Re-connect the air lines. Replace fasteners securing bracket

to panel. Check operation of valve by charging system and

performing the service check as described in this manual.

SERVICE CHECKS

OPERATING

When used as a trailer control valve connect an accurate

test gauge to the trailer service line hose and leave the trailer

emergency or supply hose connected to the trailer or if a

trailer is not available, connect the trailer supply hose to an

unvented dummy coupling or to a plugged hose fitting. The

trailer supply valve should be in the normal position.

The exhaust valve closes when the operating lever is moved

from 0° to 15° and no pressure is delivered. With 15° to 40°

of handle travel the valve delivers proportional intermediate

pressures up to 40psi.

In the fully applied position, up to 55° of handle travel, the

gauge should register full reservoir pressure. Upon release,

the gauge should immediately register zero.

The location of the atmospheric end of the exhaust line from

the valve should be found, probably in the engine

compartment.

™

With the TCS-9000

valve in the release position, no pressure

should register on the test gauge and leakage at the end of

the exhaust line should not be greater than 100 SCCM

(1" bubble in 5 seconds).

™

control brake valve is not

™

valve. Remove the

™

valve is

With the valve fully applied, leakage at the exhaust line

should not be greater than 175 SCCM (1" bubble in 3

seconds).

If the valve does not function as described, or if the leakage

is excessive, it is recommended that it be returned to the

nearest Bendix authorized distributor for a service

replacement.

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

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

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.

AVOID

vehicle

manufacturer's