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Groundsmaster 4000--D Hydraulic SystemPage 4 -- 99
Removal (Fig. 66)
1. Park machine on a level surface, lower cutting
decks, stop engine, apply parking brake and remove
key from the ignition switch.
2. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
3. To prevent contamination ofhydraulic system during
steering valve removal, thoroughly clean exterior of
valve and fittings.
4. Remove steering valve from machine using Figure
66 as a guide.
5. If hydraulic fittings are to be removed from steering
valve, mark fitting orientation to allow correct assembly.
Remove fittings from valve and discard O--rings.
Installation (Fig. 66)
1. Iffittings wereremovedfrom steeringvalve,lubricate
and place new O--rings onto fittings. Install fittings into
port openings using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2. Install steering valve using Figure 66 as a guide.
3. Make surehydraulic tank is full. Add correctoil ifnec-
essary before returning machine to service.
Hydraulic
System