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Groundsmaster 4500--D/4700--D Hydraulic SystemPage 4 -- 107
Removal (Fig. 89)
1. Park machine on a level surface, lower cutting
decks, stop engine, engage 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. Toprevent contamination ofhydraulic system during
steering cylinder removal, thoroughly clean exterior of
steering cylinder.
4. Remove hydraulic hoses from steering cylinder. La-
bel the hydraulic hoses to show their correct position on
the steering cylinder for assembly purposes.
5. Remove cotter pins, slotted hex nuts, axle washer
and ball joint spacer from the threaded ends of ball
joints.Removesteeringcylinderwithballjoints fromma-
chine.
6. If necessary, remove ball joints from steering cylin-
der.
7. If hydraulic fittings are to be removed from steering
cylinder, mark fitting orientation to allow correct assem-
bly. Remove fittings from cylinder and discard O--rings.
Installation (Fig. 89)
1. If fittings were removed from steering cylinder, lubri-
cate and place new O--rings onto fittings. Install fittings
intocylinder portsusing marksmade duringthe removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2. If removed, press ball joints into lift cylinder and se-
cure with retaining ring.
3. Slideram endball jointthrough holeon steeringarm.
Secure with axlewasher and slotted hexnut. Slide fixed
end of cylinder through hole on axle. Install spacer onto
ball joint and secure with slotted hex nut. Torque slotted
hex nuts from 100 to 125 ft--lbs (136 to 169 N--m) prior
to inserting cotter pins.
4. Install hydraulic hoses to steering cylinder (see Hy-
draulic Hose and Tube Installation in the General Infor-
mation section of this chapter).
5. Fill reservoir with hydraulic fluid as required.
6. After assembly is completed, operate steering cylin-
dertoverify thathydraulic hosesand fittingsarenot con-
tacted by anything.
Hydraulic
System