Removal (Fig. 70)
Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
Installation (Fig. 70)
1.
1. If fittings were removed from wheel motor, lubricate
and place new O--rings onto fittings. Install fittings into
motor ports using marks made during the removal pro-
cess to properly orientate fittings. Tighten fittings (see
Hydraulic Fitting Installation in the General Information
section of this chapter).
2.
3.
Raise front of machine and support with jackstands.
Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
2.
that arrows on the side of motor case point upward.
Positionwheelmotortobrakeassemblymakingsure
4.
wheel motor removal, thoroughly clean exterior of mo-
tor.
To prevent contamination of hydraulic system during
3.
Slide motor into brake assembly.
Align splines on motor shaft and splined brake shaft.
4.
Secure motor to brake assembly with cap screws
andflatwashers.Tightencapscrews from75to85ft--lb
to 115 N--m).
5.
Disconnect hydraulic hoses and tubes from wheel
motor.Putcaps or plugs on hoses and fittings to prevent
contamination. Label the hydraulic lines to show their
correct position on the wheel motor for assembly pur-
poses.
(102
5. Remove plugs from lines and fittings. Attach hydrau-
lic lines and tubes to wheel motor (see Hydraulic Hose
and Tube Installation in the General Information section
of this chapter).
IMPORTANT: Support wheel motor to prevent mo-
tor from falling during removal.
6.
7.
Lower machine to ground.
6.
7.
Remove wheel motor using Figure 70 as a guide.
Ifhydraulicfittingsaretoberemovedfromwheelmo-
Fill reservoir with hydraulic fluid as required.
tor, mark fitting orientation to allow correct assembly.
Remove fittings from motor and discard O--rings.
Groundsmaster 4500--D/4700--D
Page 4 -- 89
Hydraulic System
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