User manual BENDIX RESERVOIRS

[. . . ] Two styles of check valves are shown in Figures 2 and 3. Figure 3 is the current design. This check valve may serve to meet the legal requirement for a check valve to protect the service brake system in case of failure in the compressor, discharge lines or first reservoir compartment. PREVENTIVE MAINTENANCE All reservoirs should be drained daily. If an automatic drain device is used, it should be checked periodically for proper functioning. If an air dryer or aftercooler is used, the reservoirs should be manually drained periodically to verify the proper function of the drying device. [. . . ] The new flat style that has a non-removable stainless steel seat (see Figure 3). Both types of check valves are located in a housing (large ferrule) with a cap nut cover. They are generally located on top of the reservoir shell. Remove cap nut and cap nut o-ring. Remove valve and valve guide. CLEANING AND INSPECTION Wash all metal parts in a good cleaning solvent and dry them thoroughly. Inspect springs for distortion, corrosion, and cracks. Inspect valves and valve seats for nicks, cuts and burrs. Inspect all rubber parts for swelling and deterioration. Replace or repair as necessary. DISASSEMBLY OF THE BALL STYLE CHECK VALVE (FIGURE 2) Block and hold vehicle by means other than air brakes. Completely drain compartments #1 and #2. Remove cap 2 ASSEMBLY GENERAL Before assembly, the o-rings should be coated with silicone lubricant BW-650-M Bendix pc. ASSEMBLY OF THE BALL STYLE CHECK VALVE Replace seat o-ring and press seat into shell. Replace o-ring on cap nut and install and tighten cap nut. Replace valve guide on valve and install valve. Replace o-ring on cap nut and install and tighten cap nut. TEST Perform tests as outlined in "Operation and Leakage Test" section. INSTALLATION Reservoirs should be securely mounted where they will be protected against outside damage and so they will not vibrate or move during normal operation of the vehicle. A vibrating reservoir usually causes broken tubing lines. They should be the low point in the air brake system and all lines connected to them should drain toward the reservoir. The pipe tapped openings in the reservoir should not under any circumstances be reduced in size from original installation. A drain cock or draining device must be installed in the bottom connection of every reservoir and, in the case of the two-compartment reservoir, in each compartment. The first reservoir or first compartment must be protected by installing a safety valve. MINOR REPAIRS Minor repairs to the reservoir consist of examining the reservoir mounting and the inspection of the outside for corrosion or damage. [. . . ] 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. [. . . ]