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Compressor Leak Check

  1. Disconnect harness connector to air compressor. Disconnect pressure line from air dryer and connect Pressure Gauge (J-22124-30) to air dryer fitting.
  2. Using fused jumper wire, jumper compressor terminals "A" and "E" to battery voltage, and jumper compressor terminals "D" and "G" to ground. Allow compressor to operate until pressure gauge reading is 110 psi (7.7 kg/cm2 ). Disconnect power supply to compressor after specified pressure is reached. If reading reached specified pressure, go to step  6 . If reading does not reach specified pressure, go to next step.
  3. Apply shop air to pressure gauge service valve until gauge reads 100 psi (7.0 kg/cm2 ). Using a soap and water solution, check for leaks at connectors and compressor assembly. Repair as necessary. After repairs, go to next step. If no leaks were found, go to step  5 .
  4. Reapply shop air to pressure gauge service valve and recheck for leaks. If pressure drops down to less than 110 psi (7.7 kg/cm2 ), go to next step. If pressure does not drop, system is okay.
  5. Replace air compressor assembly and recheck system.
  6. Monitor pressure gauge for one minute. If pressure drops to less than 90 psi (6.3 kg/cm2 ), go back to step  3 . If pressure does not drop, system is okay.
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