Bendix Commercial Vehicle Systems TR-3 INVERSION VALVE 8/11 - Manual (Page 3)

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NOTE: In the Bendix ® TR-3 ™ valve shown in Figure 3,
control pressure is reduced by decreasing supply
air pressure because of the internal passage
connecting supply and control.
If the Bendix ® TR-3 inversion valve does not function as
described—or leakage is excessive—it is recommended
that it be replaced with a new valve or remanufactured unit.
The Bendix TR-2
valve can be serviced with a maintenance
kit or replaced with a new or remanufactured valve.
REMOVAL AND INSTALLATION
REMOVAL
Block and hold vehicle by means other than the air brakes.
Drain service and emergency or parking reservoirs.
Disconnect air lines from valve. Remove the mounting
bolts, remove valve.
INSTALLATION
Remount valve securely using holes provided in body.
Check and clean air lines and reconnect.
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 a Bendix ® 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.
8. Use only genuine Bendix ® brand replacement parts, components
and kits. Replacement hardware, tubing, hose, fi ttings, etc. must
be of equivalent size, type and strength as original equipment
and be designed specifi cally for such applications and systems.
9. 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.
10. Prior to returning the vehicle to service, make certain all
components and systems are restored to their proper operating
condition.
11. 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.