24. SERVICE PROCEDURE
24.8.6 REPLACE HYDRAULIC SYSTEM RETURN FILTER
The hydraulic reservoir does not have to be drained in order to service this filter
If the pressure filter indicator light on the instrument panel, remains on at
operating oil temperature with the engine running, the pressure filter must be
changed.
1.
2.
3.
4.
Park the machine on level ground, lower the blade to the ground and stop
the engine. Turn the electrical master switch to OFF. Tag all controls to
prevent inadvertent starting.
With the engine stopped, operate the equipment lever several times to
relieve any pressure. Open the right side door at the hydraulic reservoir.
Loosen the reservoir filler cap to relieve any pressure in the reservoir, then
retighten.
Remove all outside dirt from filter. Using a filter wrench remove the spin on
filter. Wipe the filter base, removing all of the old oil from the seal area.
Fill the filter element with clean oil. Coat the seal (1) on the new filter
element (2) with clean oil. Install the new element by threading it onto the
filter base (3) until the seal contacts the base, turn the filter by hand an addi-
tional % to % turn. Check the oil level in the system.
REMARK
Do not over-tighten the filter or use any tools for installation because this
can damage the gasket and filter.
REMARK
Mechanical over-tightening may distort the filter header threads or damage
the element seal.
3-45
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