Check The Hydraulic Return Filter Condition Indicator - Genie ZX-135/70 Service Manual

Service Manual
Checklist A Procedures
A-6
Check the Hydraulic Return Filter
Condition Indicator
Genie specifications require that this procedure be
performed every 8 hours or daily, whichever
comes first.
Maintaining the hydraulic filters in good condition is
essential to good system performance and safe
machine operation. The filter condition indicator
will show when the hydraulic flow is bypassing a
clogged filter. If the filter is not frequently checked
and replaced, impurities will remain in the hydraulic
system and cause component damage.
Note: There are four hydraulic filters on the
machine: one tank return filter, one medium
pressure filter, one high pressure filter and one
drive motor case drain filter. Only the tank return
filter has a condition indicator.
1 Start the engine from the ground controls.
2 Press and release the engine idle select
button to change the engine rpm to high idle.
26
3 Open the ground control side turntable cover
and inspect the filter condition indicator gauge
on the in-tank return filter.
1 Filter condition indicator gauge.
Result: The needle on the gauge should be
operating in the green area.
Result: If the needle is in the red area, the
hydraulic filter is being bypassed and the filter
needs to be replaced. Refer to maintenance
procedure, Replace the Hydraulic Filter
Elements.
ZX-135/70
August 2014
Part No. 218700