Terex Genie AL5HT, Service Manual

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May 2015 Service Manual
Diagnostic Charts
Part No. 1265482 AL5HT 67
Engine runs but battery voltage
is low Faulty alternator Inspect and repair as needed.
Engine runs but lights will not
operate Circuit breaker has tripped Reset circuit breaker.
Loose wiring connections Inspect and repair as needed.
Faulty generator Inspect and repair as needed.
Lamp light output low Dirty light fixture Clean light fixture.
Light heads are flashing on-off Batteries low Charge batteries.
Short in power supply cable Inspect and repair as needed.
Power supply cable connector faulty Inspect and repair as needed.
Light head will not illuminate End of life Replace lamp or light head.
Short in power supply cable Inspect and repair as needed.
Power supply cable connector faulty or poor
connection Inspect and repair as needed.
Unusual noise from the
generator Generator has a faulty bearing or faulty fan
blade Inspect and repair as needed.
Generator produces full voltage
at no load or voltage drops at
full load Loose or broken lead wires Inspect lead wires and connections for
broken wires and loose connections.
Rotor open or shorted Measure resistance between leads..
Stator grounded or shorted Contact the Genie Service
Department.
Generator voltage too high High engine speed Adjust the rpm
Refer to Section 2, Specifications
Generator produces no voltage
at no load or at full load Faulty surge suppressor Disconnect suppressor from circuit. If
there is an obvious increase in
voltage, replace the suppressor.
Faulty capacitor Replace capacitor.
Loss of residual magnetism Flash the rotor.
Open winding Replace the generator.