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Groundsmaster 4500--D/4700--D Hydraulic SystemPage 4 -- 115
Removal (Fig. 94)
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).
1. Park machine on a level surface, lower cutting
decks, stop engine, apply 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. Unlatch and raise hood.
4. Toprevent contamination ofhydraulic system during
fan control manifold removal, thoroughly clean exterior
of manifold.
5. Label wire harness electrical connectors that attach
to manifold solenoid coils. Disconnect connectors from
the solenoid coils.
6. Disconnect hydraulic lines from manifold and put
caps or plugs on open hydraulic lines and fittings. Label
disconnected hydraulic lines for proper assembly.
7. Remove hydraulic manifold from the frame using
Figure 94 as guide.
8. Ifhydraulic fittingsaretobe removedfromfancontrol
manifold,mark fittingorientation toallowcorrect assem-
bly (Fig. 95). Remove fittings from manifold and discard
O--rings.
Installation (Fig. 94)
1. Iffittings were removedfrom fancontrol 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. Install hydraulic manifold to the frame using Figure
94 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.
1. O--ring
2. Straight fitting (7 used)
3. O--ring
4. Dust cap
5. Test fitting
6. O--ring
Figure 95
4
6
3
2
1
5
UP
2
2
2
2
2
50 ft--lb
(68 N--m)
Hydraulic
System