User manual BENDIX INLET REG VALVE COMP

[. . . ] A hex socket plug with a through drilled vent along with a spring and steel ball valve comprise the safety valve. PISTON OUTLET TO COMPRESSOR VALVE PLATE SEAT SPRING OPERATION GENERAL The IRVTM valve maintains a low pressure at the compressor inlet (10 psi or less) regardless of turbocharger supply air pressure. The air flow through the IRVTM valve is throttled by TURBOCHARGER SUPPLY FIGURE 4 - COMPRESSOR LOADEDHIGH TURBOCHARGER PRESSURE PISTON COMPRESSOR LOADED HIGH TURBOCHARGER PRESSURE (Figure 4) Air at turbocharger supply pressure is continually supplied to the chamber above the IRVTM valve piston. At pressures above 5 psi the force on the piston is sufficient to partially close the valve. With the compressor loaded (compressing air) the resulting pressure drop across the valve lowers the delivery pressure to the compressor. [. . . ] 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. Use only genuine Bendix ® replacement parts, components and kits. Replacement hardware, tubing, hose, fittings, etc. 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. Prior to returning the vehicle to service, make certain all components and systems are restored to their proper operating condition. 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. 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 1/8" NPT CONNECTION COMPRESSOR INLET MOUNTING HOLE(2) FIGURE 7 - COMPRESSOR INLET ADAPTER PART NO. 236701 3 COMPRESSOR INLET CAVITY TEST GAUGE A AIR LINE QUICK COUPLER ADAPTER (236701) INLET GASKETS (243430) IRV TYPICAL MULTI-CYLINDER COMPRESSOR TEST GAUGE B PRESSURE REGULATING VALVE TO SHOP AIR FIGURE 8 - IRVTM VALVE TEST APPARATUS OPERATION & LEAKAGE TESTS (Figures 7 & 8) GENERAL In order to test the operation of the IRVTM valve it will be necessary to install the equipment and apparatus as illustrated in Figure 8. The Bendix compressor inlet adapter in Figures 7 and 8 can be obtained at the nearest Bendix parts outlet. In most cases the inlet adapter will be required, however, if the IRVTM valve being tested has a 1/8 inch NPT access port in the area of its flange, the adapter is not needed. In addition to the inlet adapter two test gauges of known accuracy and a pressure regulating valve capable of graduation in the 5-30 psi range will be required to complete the tests. 2. Using a soap solution check for leakage at the IRVTM valve vent in the body, around the two inch cap nut and at the exhaust plug of the safety valve. Leakage in excess of a one inch bubble in one second is unacceptable. OPERATIONAL TESTS (FIGURE 8) 1. Drain the air pressure from the vehicle reservoirs. Apply 25 psi shop air pressure to the turbo supply port of the IRVTM valve, start the engine and allow it to run at an idle (approximately 600-700 RPM). When vehicle air system pressure rises above 25 psi, proceed to Step 3. [. . . ] Gently tap the open end of the valve body on a nonmetallic surface in order to remove the valve and piston assembly. IMPORTANT: Do not Lubricate this o-ring or the cap nut groove in which it is installed. Lubricate the cap nut groove for the large diameter o-ring. Lubricate, then install the large diameter o-ring on the cap nut. [. . . ]