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This section contains instructions for troubleshooting the equipment following a malfunction.
The troubleshooting procedures to be performed on the equipment are listed below. Each
symptom of trouble for a component or system is followed by a list of probable causes of the
trouble and suggested procedures to be followed to identify the cause.
In general, the procedures listed should be performed in the order in which they are listed, although
the order may be varied if the need is indicated by conditions under which the trouble occurred. In
any event, the procedures which can be performed in the least amount of time and with the least
amount of removal or disassembly of parts, should be performed first.
UNPLANNED SHUTDOWN
When the operation of the machine has been interrupted by an unexplained shutdown, check the
following:
1. Check the fuel level and truck dash gauges and indications for possible engine
problems.
2. Check the compressor discharge temperature/switchgauge. If the latching relay circuit
is tripped the 12VDC solenoid will loose power and divert hydraulic oil back to the
reservoir. The compressor blowdown pressure switch and the temperature switchgauge
will not allow power to the hydraulic solenoid until the air has blown down and the
temperature has dropped into it's normal operating range and the push button has been
re-set. Take compressor in for service once a high temperature shutdown has
occurred. Failure to do so will void your warranty.
3. Check that the compressor oil is at proper level.
4. Check oil cooler for dirt, slush, ice on the fins, or any other obstructions to the cooling
air flow.
5. Make a thorough external check for any cause of shutdown such as broken hose,
broken oil lines, loose or broken wire, etc.
TROUBLESHOOTING
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