User manual BENDIX E-5 BRAKE VALVE

[. . . ] The air below the piston and in the delivery lines is then exhausted through the exhaust port. OPERATION Applying Applying the pedal exerts a force on the plunger, through the rubber graduating spring and to the piston. The piston moves and its stem, which is the exhaust seat, closes the exhaust. Air pressure from the reservoir then flows in by the inlet valve and out the delivery ports to the air chambers applying the brakes. SD-03-816 PREVENTIVE MAINTENANCE Important: Review the warranty policy before performing any intrusive maintenance procedures. [. . . ] Install gauge in a delivery port or line; depress the treadle or pedal to several positions between fully released and fully applied positions, checking the delivery pressure on the gauge to see that it varies proportionately with the movement of the treadle or pedal. In the fully applied position, the reading on the gauge should be approximately that of full reservoir pressure. Upon release of the application, the reading of the test gauge should fall to zero psi immediately. Leakage Test With 100 psi supply pressure and valve in released position, coat exhaust port with soapsuds and check for leakage. If the valve does not function as described or leakage is excessive, it is recommended that it be replaced with a new or remanufactured unit, or repaired with genuine Bendix parts available at Bendix outlets. 1. Inspect all pedal parts and mounting plate for wear; replace as necessary. REMOVING AND INSTALLING Removing Block and hold vehicle by means other than air brakes. For complete valve removal - disconnect all air lines in the cab and at the firewall from the brake valve. Remove mounting nuts and cap screws; remove valve. 2 Replace all parts not considered serviceable. Maintenance Kits containing all necessary detail parts are available from Bendix outlets. 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. Park the vehicle on a level surface, apply the parking brakes, and always block the wheels. 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. 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-ISTM air dryer system or a dryer reservoir module, be sure to drain the purge reservoir. [. . . ] Install inlet valve spring (10) in body; install inlet/exhaust valve assembly (9) in bore of body. Instal o-rings on inlet valve seat (8) and install in body so tab in seat lines up with its slot in the body. Install piston assembly (6); while exerting pressure on piston, install retainer (5); make certain retainer tabs snap into place in grooves of body. [. . . ]