Perform Engine Maintenance - Ford Models; Check The Hydraulic Return Filter Condition Indicator (If Equipped) - Genie GS-3390 Service Manual

July 2007
REV E
A-8
Perform Engine Maintenance -
Ford Models
Engine specifications require that this procedure
be performed every 100 hours or quarterly,
whichever comes first.
Required maintenance procedures and additional
engine information is available in the
Ford LRG425 Operator Handbook
(Ford part number FPP 194-302).
Ford LRG 425 Operator Handbook
Genie part number
Part No. 72863
Section 3 • Scheduled Maintenance Procedures
A-9
Check the Hydraulic Return Filter
Condition Indicator (if equipped)
Genie specifications require that this procedure be
performed every 100 hours of operation.
Maintaining the hydraulic return filter 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.
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1 Start the engine from the platform controls.
2 Press the high idle button at the platform
controls to allow the engine to run at high idle.
3 Open the function manifold tray door and locate
the hydraulic tank return filter behind the entry
ladder.
4 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 should be
replaced. See B-18, Replace the Hydraulic
Tank Return Filter.
GS-3390 • GS-4390 • GS-5390
CHECKLIST A PROCEDURES
In extreme cold conditions,
20°F / -6°C and below, warm the
engine for 5 minutes before
operating to prevent hydraulic
system damage.
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