Check The Hydraulic Filter Condition Indicators - Genie Z80/60 Service Manual

Section 3 • Scheduled Maintenance Procedures
CHECKLIST A PROCEDURES
A-5
Check the Hydraulic Filter
Condition Indicators
Maintaining the hydraulic filters in good condition is
essential to good system performance and safe
machine operation. The filter condition indicators
will show when the hydraulic flow is bypassing a
clogged filter. If the filters are 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 and two high pressure filters. All the
filters have condition indicators on them, except
the medium pressure filter.
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.
Tank return filter:
3 Open the ground control side turntable cover
and inspect the filter condition indicator gauge.
Result: The needle on the gauge should be
operating in the green area. If the needle is in
the red area, this indicates that the hydraulic
filter is being bypassed and the filter needs to
be replaced. See D-7, Replace the Hydraulic
Filter Elements.
a filter condition indicator gauge
3 - 10
Medium and high pressure filters:
Note: The medium and high pressure filters are
mounted to the engine side bulkhead.
4 Inspect the filter condition indicators.
a
Result: The filter condition indicators should be
operating with the plungers in the green area.
Result: If any of the indicators display the
plunger in the red area , this indicates that a
hydraulic filter is being bypassed and the filter
needs to be replaced. See D-7, Replace the
Hydraulic Filter Elements.
a
Z-80/60
a high pressure filters
b filter condition indicators
c medium pressure filter
Part No. 88619
June 2011
REV E
b
c