Removal (Fig. 105)
Park machine on a level surface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
Installation (Fig. 105)
1.
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).
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
2.
inder pin (item 13) into frame and clevis. Secure pin with
flange nut and flange head screw.
Position cylinder barrel clevis toframeand insertcyl-
3.
lift cylinder removal, thoroughly clean exterior of lift cyl-
inder.
To prevent contamination of hydraulic system during
3.
der shaft clevis. Secure pin to liftarm with flange nutand
flange head screw.
Insert cylinder pin (item 4) through lift arm and cylin-
WARNING
4.
Remove caps and plugs from hoses and fittings. At-
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.
tach hydraulic hoses to lift cylinder (see Hydraulic Hose
and Tube Installation in the General Information section
of this chapter).
5.
6.
verify that hydraulic hoses and fittings are not contacted
by anything.
Fill reservoir with hydraulic fluid as required.
4.
Disconnect hydraulic hoses from lift cylinder. Put
After assembly is completed, operate lift cylinder to
caps or plugs on open hydraulic lines and fittings to pre-
vent system contamination. Label disconnected hy-
draulic lines for proper assembly.
5.
Remove flange nut and flange head screw that se-
cure the cylinder pin (item 4) to the lift arm. Remove pin
from lift arm and cylinder shaft clevis which will free lift
cylinder from lift arm.
#4
Deck
#1 Deck
#5 Deck
6.
cure the cylinder pin (item 13) to the frame. Pull pin from
frame and cylinder barrel clevis.
Remove flange nut and flange head screw that se-
7.
8.
der, mark fitting orientation to allow correct assembly.
Remove fittings from cylinder and discard O--rings.
Remove lift cylinder from machine.
#
2
#3
Deck
#
(GM4700)
6 Deck
#7 Deck
(GM4700)
Deck
If hydraulic fittings are to be removed from lift cylin-
CUTTING DECK LOCATIONS
Figure 106
Groundsmaster 4500--D/4700--D
Page 4 -- 127
Hydraulic System
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