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. Topreventcontaminationofhydraulicsystemduring
steering cylinder removal, thoroughly clean exterior of
steering cylinder.
4. Remove hydraulic hoses from steering cylinder. La-
belthehydraulic hoses to show their correct positionon
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.Removesteeringcylinderwithballjointsfromma-
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
intocylinderportsusingmarksmadeduringtheremoval
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 r ing.
3. Slideramendballjointthroughholeonsteeringarm.
Securewith axlewasherandslottedhexnut.Slidefixed
end of cylinder through hole on axle. Install s pacer onto
balljointand secure with slottedhex 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-
dertoverifythathydraulichosesandfittingsarenotcon-
tacted by anything.
Hydraulic
System
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