24
MAINTENANCE
Very little routine maintenance is required with a
Harrison hydraulic generator. It consists primarily of
changing the oil and filter and performing a visual
inspection of the generator tray. With a little
maintenance and a proper installation, the system
should operate trouble free for many years.
WARNING!
ACCIDENTAL STARTING OF THE GENERATOR
DURING MAINTENANCE CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH!
The hydraulic fluid and the filter should be changed
every 500 hours or one year, whichever occurs first.
Use a 10 micron absolute filtering system or better to
clean the oil before adding it to the reservoir. Refer
to the Installation section for oil selection
recommendations. Refer to the Appendix for the
replacement filter element. If the oil appears
discolored, smells burnt, or feels abrasive to the
touch, this is an indication of a system problem and
steps should be taken to diagnose it.
Visually inspect the electrical wiring for corrosion
and loose or bad connections.
Visually inspect the generator for debris or greasy
soil build-up. This can impede airflow and cause
premature generator failure.
Blow out the heat exchanger fins and the inside of the
alternator with an air hose.
Do not use water to
clean the inside of the alternator.
If the alternator has been submerged in water, the
windings
must
be dried before use. Immersion in
salt water requires cleaning of the generator and
possibly re-coating with epoxy before use.
Check the fittings for loose connections or leaks.
Inspect hoses for any bulges, chaffing, or damage.
Replace immediately if defects are found.
Check that the pump is securely mounted to the PTO
or drive shaft and that there are no leaks from the
fittings or the front seal. A leak at the front seal may
indicate bad alignment or the need for vibration
isolators. If a leak at the front seal is caught early
enough and the problem is corrected, it can eliminate
expensive repairs down the road. If the pump is
directly mounted to the PTO, the splines on the shaft
and PTO
must
be properly greased and maintained.
Read the caution on fretting under Maintenance
Considerations in the Specifications and Installation
Guide.