User manual BENDIX TC-2 TRAILER CONTROL BRAKE VALVE

[. . . ] The air pressure beneath will then lift the piston, moving it away from the exhaust valve. With the exhaust passage open, air pressure in the service line will exhaust out the exhaust port of the valve. 3. If remote-operated type valve, disconnect the operating mechanism. Remove mounting clamp bolts, clamp, and then valve. INSTALLING 1. [. . . ] Upon release, the gauge should immediately register zero. LEAKAGE TEST Locate the exhaust port or exhaust line and apply a soap solution. (It is common practice to connect a line from the valve exhaust port to a location remote from the immediate driver's area. ) With the valve in the released position, exhaust leakage should not exceed a 1" bubble in 5 seconds (100 sccm). With the valve fully applied, leakage at the exhaust should not exceed a 1" bubble in 3 seconds (175 sccm). 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 parts available at Bendix outlets. CLEANING AND INSPECTION OF PARTS 1. Clean all metal parts in mineral spirits. Check all springs for distortion, cracks, and corrosion. All rubber parts should be inspected for wear or deterioration. Replace all parts not considered serviceable during their inspection with genuine Bendix replacement parts. REMOVING AND INSTALLING REMOVING 1. Block and hold vehicle by means other than air brakes. Drain air brake system. 2 Adjusting Ring Lock Washer Head O-Ring Adjusting Ring Cam Gasket Piston O-Ring Piston Return Spring Cover Cam Follower Body Graduating Spring Exhaust Valve Spring Stem Inlet Valve Seat Inlet Valve Delivery Port Supply Port Exhaust Port Head Seal O-Ring FIGURE 3 - SECTIONAL VIEW O-Ring Spirol Pin Knob Handle TC-2TM Brake Valve Insert Head O-Ring ASSEMBLY Prior to assembly, lubricate the body and cover bores, cam and cam follower, piston o-ring, and cover top with Dow Corning 55-M pneumatic grease (Bendix piece number 291126). A little water in the boot valve or some soap on the stem will make it easier to press on the inlet valve. PIace stem with inlet valve installed in inlet seat. Insert some object such as a cap screw to hold the inlet valve up against its seat. Position spring and exhaust valve guide. Depress guide and spring, then press exhaust valve on stem. Place seal o-ring over insert seat and with cap screws and lock washers install inlet and exhaust insert in body. Recommended torque on insert cap screws is 60 to 80 inch pounds. Install piston o-ring on piston and install piston in body. Install adjusting ring in cover and screw it down until it is flush with top of cover. Position graduating spring and gasket in body. 11. Connect body to cover; tighten cap screws evenly and torque to 75-95 inch pounds. Install adjusting ring lock washer, head seal o-ring, and head. [. . . ] 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. Use only genuine Bendix® replacement parts, components and kits. Replacement hardware, tubing, hose, fittings, etc. [. . . ]