Removal (Fig. 94)
50
(68
ft--lb
N--m)
NOTE: The ports on the manifold are marked for easy
identification of components. Example: P1 is the gear
pump connection port (see Hydraulic Schematics in
Chapter 9 -- Foldout Drawings to identify the function of
the hydraulic lines and cartridge valves at each port).
UP
2
2
1
2
2
1.
Park machine on a level surface, lower cutting
3
decks, stop engine, apply parking brake and remove
key from the ignition switch.
2
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
6
2
4
5
3.
4.
fan control manifold removal, thoroughly clean exterior
of manifold.
Unlatch and raise hood.
Figure 95
To prevent contamination of hydraulic system during
1.
2.
3.
O--ring
4.
Dust cap
Test fitting
O--ring
Straight fitting (7 used)
O--ring
5.
6.
5.
to manifold solenoid coils. Disconnect connectors from
the solenoid coils.
Label wire harness electrical connectors that attach
6.
caps or plugs on open hydraulic lines and fittings. Label
disconnected hydraulic lines for proper assembly.
Disconnect hydraulic lines from manifold and put
7.
Remove hydraulic manifold from the frame using
Figure 94 as guide.
8.
Ifhydraulicfittingsaretoberemovedfromfancontrol
manifold,markfittingorientation toallowcorrectassem-
bly (Fig. 95). Remove fittings from manifold and discard
O--rings.
Installation (Fig. 94)
1.
If fittings were removed from fan control manifold, lu-
bricate and place new O--rings onto fittings. Install fit-
tings into manifold ports using marks made during the
removal process to properly orientate fittings. Tighten
fittings (see Hydraulic Fitting Installation in the General
Information section of this chapter). Refer to Figure 95
for fitting installation torque.
2.
94
Install hydraulic manifold to the frame using Figure
as guide.
3.
Remove caps and plugs from fittings and hoses.
Properly connect hydraulic lines to manifold (see Hy-
draulic Hose and Tube Installation in the General Infor-
mation section of this chapter).
4.
Connect wire harness electrical connectors to the
solenoid valves.
5.
Lower and secure hood.
Groundsmaster 4500--D/4700--D
Page 4 -- 115
Hydraulic System
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