User manual BENDIX TCS-9000 CONTROL BRAKE VALVE

[. . . ] It is not designed for use as a parking brake control and should never be used to hold the brakes applied when the operator leaves the vehicle. HOLDING As delivery pressure builds up in the delivery port, it is also effective under the plunger causing it to balance the force of the graduation spring until the inlet valve is seated against its seat in the body and is also seated against the plunger, thus preventing the delivery air from exhausting through the center of the plunger, maintaining the desired pressure in the delivery line. RELEASING When the handle is released or moved to its release position, the cam follower is permitted to rise, opening the exhaust passage and allowing the air pressure in the delivery line to exhaust out the exhaust port. OPERATION APPLYING When the handle is pulled through its 55° arc, the cam is rotated accordingly. The cam action forces the cam follower downward, compressing the graduation spring and creating a force on the plunger which depresses the inlet valve and delivers air under pressure to the delivery port. SD-03-3674 1 PREVENTIVE MAINTENANCE Important: The TCS-9000TM control brake valve is not serviceable. [. . . ] 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 an AD-IS® air dryer system or a dryer reservoir module, 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. Never remove a component or plug unless you are certain all system pressure has been depleted. REMOVING AND INSTALLING Secure the vehicle with spring brakes or blocks. Drain the reservoir which supplies the TCS-9000TM valve. Remove the fasteners which secure the mounting bracket to the panel. Mark and disconnect the connecting air lines. INSTALLING A typical piping arrangement for the TCS-9000TM valve is shown in Figure 3. Check connecting air lines for integrity and foreign material. 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. [. . . ] must be of equivalent size, type and strength as original equipment and be designed specifically 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 specifically stated and approved by the vehicle and component manufacturer. [. . . ]