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A compression ball sleeve nut and sleeve for 3/16 inch tubing with ball sleeve connector and an inter- (3) Cycle ignition from OFF to ON. sistants or approximately 300-325 lbs.) to run com- (5) Remove the load applied in Step 4. Allow the system to exhaust and lower the vehicle. (6) When no more air can be exhausted, the gauge should indicate 69 to 152 kPa (10 to 22 psi). (7) Remove the pressure gauge and nylon tubing. Attach the air line between the dryer and shock ab- LEAK CHECKS (1) Repeat Residual Air Check Steps 1, 2, 3, and 4. Allow the system to fill until gauge reads 483 to 621 If compressor is permitted to run until it reaches its maximum output pressure, the vent solenoid (2) With load still applied, disconnect wire harness connector from the control module, then remove ap- (3) Observe if pressure leaks down or holds steady (wait approximately 15 minutes). (A) If system will not inflate beyond 345 kPa (50 psi). A severe leak may be indicated. Check for a pressure line between compressor and shocks. (B) The standard soap solution check procedure is acceptable. (C) If pressure holds steady, perform the diagnosis procedures. SYSTEM OPERATION RAISING VEHICLE HEIGHT When weight is added to the rear suspension. The body of the vehicle is lowered, moving the height This action will activate the internal time delay circuit. After a time delay of 12 to 18 seconds. The With the relay energized, the compressor motor runs and air is sent through the system. As the LOWERING VEHICLE HEIGHT When the weight is removed from the vehicle. The body moves upward, which allows the height sensor After a time delay of 12 to 18 seconds. The (CM) activates the exhaust solenoid circuit. Air is ex- As the body lowers, the height sensor is lowered to- ward its original position. When the body reaches the COMPRESSOR PERFORMANCE TEST This test can be performed on the vehicle. It is used to evaluate compressor current draw, pressure (1) Disconnect the compressor motor wiring har- ness connector. (2) Disconnect air line between dryer and right shock absorber. (3) Connect an air pressure gauge into the system (Fig. 5). (4) Connect an ammeter in series between the red wire terminal on compressor connector and a 12 volt (5) If the current draw to the compressor motor ex- ceeds 21 amperes, replace the compressor assembly. (6) When the air pressure stabilizes at 827 kPa (120 psi), disconnect the (+) wire lead from the con- Fig. 5 Pressure Gauge Installed in System Ä SUSPENSION AND DRIVESHAFTS 2 - 61 |