Removal (Fig. 101)
Park the machine on a level surface, engage the
parking brake, lower the cutting decks and stop the en-
gine. Remove the key from the ignition switch.
2. Ifremoved,pressballjointintobarrelandsecurewith
retaining ring.
1.
3. If ball joint was removed from cylinder shaft, fully re-
tract cylinder shaft and thread ball joint into shaft so that
distance from cylinder front head to center of ball joint is
as measured during removal process. Tighten jam nut.
2.
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
Read the General Precautions for Removing and
4. Thoroughly clean tapers on ball joints and axle as-
sembly.
CAUTION
5. Position steering cylinder to machine.
6.
16).
Secure steering cylinder to axle with jam nuts (item
Tightenfirstjamnutandthen, whileholding firstjam
nut with wrench, tighten second jam nut.
Before opening hydraulic system, operate all hy-
draulic controls to relieve system pressure and
avoid injury from pressurized hydraulic oil. See
Relieving Hydraulic System Pressure in the Gen-
eral Information section of this chapter.
7.
hex nut (item 29). Install cotter pin (item 20).
Secure steering cylinder to RH drag link with slotted
8.
fittings.
Remove caps and plugs from hydraulic hoses and
3.
poses. Thoroughly clean hydraulic hose ends prior to
disconnecting hoses from the steering cylinder.
Label all hydraulic connections for assembly pur-
9.
Lubricate and install new O--rings on steering cylin-
der fittings. Correctly connect hydraulic hoses to steer-
ing cylinder (see Hydraulic Hose and Tube Installation
in the General Information section of this chapter).
4.
5.
Disconnect hydraulic hoses from steering cylinder.
Putcaps or plugs on disconnected hoses andfittings
to prevent contamination.
10.Check
oil level in hydraulic reservoir and add correct
oil if necessary.
6.
Remove two (2) jam nuts (item 16) that secure steer-
ing cylinder to axle. Remove cotter pin (item 20) and
slotted hex nut (item 29) that secure steering cylinder to
RH drag link.
11.
Lubricate steering cylinder ball joint grease fittings.
Hydraulic System Start--up procedures (see
12.Follow
Hydraulic System Start--up in this section).
7.
Separate steering cylinder ball joints from axle as-
sembly and remove steering cylinder from machine.
13.Check
that steering cylinder does not contact the
axle or frame as cylinder moves from fully retracted to
fully extended. Also, check that distance between the
drag links and steering stops are equal on both sides of
the machine. If necessary, adjust location of ball joint on
cylinder shaft.
8.
If necessary, remove ball joints from steering cylin-
der barrel and shaft. If ball joint is to be removed from
cylinder shaft, fully retract cylinder shaft and measure
distance from cylinder front head to center of ball joint to
easeinstallationofballjointintocylindershaft(Fig.102).
9.
If hydraulic fittings are to be removed from steering
FRONT HEAD
cylinder, mark fitting orientation to allow correct assem-
bly. Remove fittings from steering cylinder and discard
O--rings.
Installation (Fig. 101)
1.
Ifhydraulicfittingswereremovedfromsteeringcylin-
der, lubricate new O--rings with clean hydraulic oil, posi-
tion O--rings to fittings and install fittings into steering
cylinder ports (see Hydraulic Fitting Installation in the
General Information section of this chapter). Make sure
that fittings are orientated correctly.
MEASURE DISTANCE
FOR ASSEMBLY PURPOSES
Figure 102
Groundsmaster 4300--D
Page 4 -- 113
Hydraulic System
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