90
FAULT FINDING
7/124 - 10/104, 10/124 - 14/114, 14/84
FAULT
CAUSE
REMEDY
3. High engine Coolant
Temperature
Low coolant level.
Check coolant level. If low, add coolant.
Loose or broken belts.
Tighten or replace belt set.
Ambient temperature above rated
ambient temperature range.
Operate in cooler environment.
Dirty operating conditions.
Move compressor to cleaner environment.
Dirty cooler(s).
Clean exterior of cooler(s).
Compressor tilted beyond out-of-
level operating limit.
Reposition or relocate compressor to be more level.
Operating pressure too high.
Reduce pressure to rated operating pressure.
Recirculation of cooling air.
Close enclosure doors. Close and secure access panels. Check for loose or
missing belly pans.
Loose wire connection.
Check wires at switches and connectors to find loose connection. Make
repairs. See Electronic Service Manual.
4. Low Engine Oil
Pressure
Low engine oil level.
Check oil level. If low, add oil.
Compressor tilted beyond out-of-
level operating limit.
Reposition or relocate compressor to be more level.
Wrong engine oil.
Change engine oil. Review engine oil specification.
Clogged engine oil filter.
Replace engine oil filter.
Engine malfunctioning.
See troubleshooting in Engine manual.
Loose wire connection.
Check wires at switches and connectors to find loose connection. Make
repairs. See Electronic Service Manual.
5. Low electrical
system voltage
Loose or broken belts.
Tighten or replace belt set.
Loose wire connection.
Check wires at switches and connectors to find loose connection. Make
repairs. See Electronic Service Manual.
Low battery voltage.
Check battery condition; recharge if necessary. Check electrolyte level; add
if necessary. Check cable connections; clean and tighten as needed.
Malfunctioning alternator.
Repair or replace alternator.
6. High compressor oil
temperature
Ambient temperature above rated
ambient temperature range.
Operate in cooler environment.
Compressor tilted beyond out-of-
level operating limit.
Reposition or relocate compressor to be more level.
Low compressor oil level.
Add compressor oil. Look for and repair any leaks.
Wrong compressor oil.
Change compressor oil. Review compressor oil specification.
Dirty cooler(s).
Clean exterior of cooler(s).
Dirty operating conditions.
Move compressor to cleaner environment.
Clogged compressor oil filter(s).
Replace compressor oil filter(s) and change compressor oil.
Loose or broken belts.
Tighten or replace belt set.
Operating pressure too high.
Reduce pressure to rated operating pressure.
Recirculation of cooling air.
Close enclosure doors. Close and secure access panels. Check for loose or
missing belly pans.
Malfunctioning compressor oil
thermostat.
Replace thermostat element in conventional bypass valve, if equipped.
Loose or broken belts.
Tighten or replace belt set.
Malfunctioning oil cooler pressure
relief valve.
Replace valve.
Malfunctioning minimum pressure
valve.
Repair or replace valve.
Blocked or restricted oil lines.
Clean by flushing, or replace lines.
Airend malfunctioning.
See Faults #11, #12.
Summary of Contents for 10/104
Page 2: ......
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Page 11: ...ISO SYMBOLS 7 7 124 10 104 10 124 14 114 14 84 Replace any cracked protective shield ...
Page 83: ...MAINTENANCE 79 7 124 10 104 10 124 14 114 14 84 ...
Page 84: ...80 MAINTENANCE 7 124 10 104 10 124 14 114 14 84 ...
Page 92: ...88 MACHINE SYSTEMS 7 124 10 104 10 124 14 114 14 84 ...
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