Removal (Fig. 107)
Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
2. Position cylinder barrel clevis toframeand insertcyl-
inder pin (item 8) with one (1) retaining ring installed
through the frame and cylinder clevis. Secure pin with
second retaining ring.
1.
3.
cylinder shaft clevis. Secure pin to lift arm with flange
head screw and flange nut.
Insert cylinder pin (item 2) through the lift arm and
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.
Remove caps and plugs from hoses and fittings. At-
3.
lift cylinder removal, thoroughly clean exterior of lift cyl-
inder.
To prevent contamination of hydraulic system during
tach hydraulic hoses to lift cylinder (see Hydraulic Hose
and Tube Installation in the General Information section
of this chapter).
5.
Fill reservoir with hydraulic fluid as required.
WARNING
6.
After assembly is completed, operate lift cylinder to
verify that hydraulic hoses and fittings are not contacted
by anything.
Make sure that cutting decks are fully lowered
before loosening hydraulic lines from lift cylin-
der. If decks are raised as hydraulic lines are
loosened, decks may drop unexpectedly.
#4
Deck
#1 Deck
#5 Deck
4.
Disconnect hydraulic hoses from lift cylinder. Put
caps or plugs on open hydraulic lines and fittings to pre-
ventsystemcontamination.Labelthehydraulichosesto
show their correct position on the lift cylinder for assem-
bly purposes.
5.
cure the cylinder pin (item 2) to the lift arm. Remove pin
from lift arm and cylinder shaft clevis.
Remove flange head screw and flange nut that se-
#
2
#3
Deck
#6 Deck
#7 Deck
(GM4700)
Deck
(GM4700)
6.
(item 8). Remove cylinder pin from the frame and cylin-
der barrel clevis.
Remove one (1) retaining ring from the cylinder pin
7.
8.
der, mark fitting orientation to allow correct assembly.
Remove fittings from cylinder and discard O--rings.
Remove lift cylinder from machine.
CUTTING DECK LOCATIONS
If hydraulic fittings are to be removed from lift cylin-
Figure 108
Installation (Fig. 107)
1.
If fittings were removed from lift cylinder, lubricate
and place new O--rings onto fittings. Install fittings into
cylinderopeningsusingmarksmadeduringtheremoval
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
Groundsmaster 4500--D/4700--D
Page 4 -- 129
Hydraulic System
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