TESTS COMMON TO MORE THAN ONE COMPLAINT
1. Discharge plugged or restricted
•Connect a temporary discharge line from the compressor discharge port to the supply reservoir and
2.Air pressure trapped between the governor and the compressor
•Verify the safety valve operation, then remove or disconnect the governor from the compressor and check
•If the
•If the
3. Blow Leakage at the Air Dryer Exhaust
•Drain all air from the supply reservoir then remove the control air line from the air dryer, plug the line and plug the control port in the air dryer.
•If the
•If the
•If
4. Air system leakage
•Build the system pressure to governor
•If the leakage is NOT OK on the gauges, find the leak(s) in service and park system and repair. Retest and if the system purge air dryer is in use and still not OK, repair or replace the dryer.
•If the leakage is OK on the gauges, drain the air from the supply reservoir, remove the drain cock and install an air gauge. Build the system air in the supply reservoir and note the leakage. If OK, continue checking. If NOT OK, find the leaks and repair.
5. Discharge line leakage
•Apply a soap solution to the cover on the flexible discharge line, if leakage is noted, replace the line.
•Soap fittings to check for leakage and tighten as needed.
IMPORTANT: The Complaints, Causes and Remedies presented here should not be considered as the only situations possible. They are only meant to represent the most commonly encountered situations. It may be necessary to perform additional troubleshooting using the more detailed information presented in service manuals for the specific components.
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