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Troubleshooting
voltage.
CAUTION
Remove all jewelry, especially rings and
watches, before doing any electrical trou-
bleshooting or testing. Disconnect the bat-
tery cables unless the test requires battery
For effective troubleshooting and repairs, you MUST
have a good understanding of the electrical circuits and
components used on this machine. (See Electrical
Schematic.)
Starting Problems
Study the operating characteristics preceding the elec-
trical failure to help identify the area of difficulty. Try to
isolate the failure to a specific functional system; then
check that area, repairing one component at a time.
Attempting to repair more than one system at one time
will lead to confusion.
Possible Causes and Corrections in the troubleshooting
charts should be checked in the order in which they are
listed.
If the machine being repaired has any interlock switches
by-passed, they must be reconnected for proper trou-
bleshooting and safety.
Condition Possible Cause Correction
Engine fails to crank, regardless Loose or corroded battery connec-
Clean and tighten connections.
of traction bail position. tions.
Low battery charge.
Charge battery. Replace battery if
it will not hold a charge (also see
Battery does not charge under
General Run and Transport Prob-
lems).
Circuit breaker open.
Reset circuit breaker. Find cause
for open circuit breaker and cor-
rect. Replace circuit breaker if
faulty.
Ignition key switch faulty.
Test switch and replace if faulty.
Traction switch 1 faulty.
Make sure switch is properly in-
stalled and adjusted. Test switch
and replace if faulty.
Start relay faulty.
Test relay and replace if faulty.
Starter solenoid faulty.
Test starter solenoid and replace
if faulty.
Starter is faulty.
Test starter and repair replace if
faulty.
Engine is seized.
Repair engine.
Loose or damaged wiring.
Check connections. Repair wiring.
Hydroject 3010 Page 5 - 7 Troubleshooting