Compressor Performance Test
- Disconnect pressure line from drier and attach Air Pressure Gauge (J22124-A
) to drier fitting. Disconnect wiring from compressor motor and exhaust solenoid terminals. See Fig 1
.
- Connect 12-volt power supply to compressor through ammeter. Current draw must not exceed 14 amps. Allow pressure to reach 100 psi (7.03 kg/cm2
) minimum and shut off compressor. Allow pressure to stabilize. Check for pressure leaks.
- If compressor is allowed to run to maximum output pressure of 180 psi (12.7 kg/cm2
), the solenoid exhaust valve will act as a relief valve. This gives a false indication of system leakage. If compressor operates correctly, reconnect wiring and air lines. If compressor does not operate correctly, refer to TROUBLE SHOOTING
in this article.
Courtesy of GENERAL MOTORS CORP.