Toro 30857 - Page 131

Groundsmaster 4500--D/4700--D Hydraulic SystemPage 4 -- 97
Removal (Fig. 78)
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. Topreventcontaminationofhydraulicsystemduring
manifoldremoval,thoroughlycleanexteriorofmanifold.
5. Label wire harness electrical connectors that attach
to manifold solenoid coils. Disconnect c onnectors from
the solenoid coils.
6. Disconnect hydraulic lines from manifold and put
capsor plugs on open hydraulic linesand fittings. Label
disconnected hydraulic lines for proper assembly.
7. Remove hydraulic manifold from the frame using
Figure 78 as guide.
8. If hydraulic fittings are to be removed from control
manifold,markfittingorientationtoallowcorrectassem-
bly (Fig. 79 or 80). Remove fittings from manifold and
discard O--rings.
Installation (Fig. 78)
1. If fittings were removed from control manifold, lubri-
cate and place new O--rings onto fittings. Install fittings
intomanifoldportsusingmarksmadeduringtheremov-
al process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter). Refer to Figure 79 or 80
for fitting installation torque.
2. Install hydraulic manifold to the frame using Figure
78 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 valve coils.
5. Lower and secure hood.
1. Deck manifold
2. O--ring
3. Straight fitting (8 used)
4. O--ring
5. O--ring
6. Straight fitting
7. O--ring
8. Dust cover
9. Test fitting
10. O--ring
11. O--ring
12. 45
o
fitting
13. O--ring
14. Straight fitting
15. O--ring
16. 90
o
fitting
17. O--ring
Figure 79
8
4
6
3
2
1
5
7
9
10
11
14
15
12
13
16
17
11
13
GM 4500--D
50 ft--lb
(68 N--m)
75 ft--lb
(101 N--m)
75 ft--lb
(101 N--m)
1. Deck manifold
2. O--ring
3. Test fitting
4. Dust cap
5. O--ring
6. Straight fitting
7. O--ring
8. O--ring
9. Straight fitting (8 used)
10. O--ring
11. O--ring
12. Straight fitting
13. O--ring
14. O--ring
15. O--ring
16. 90
o
fitting
17. 45
o
fitting
Figure 80
8
4
6
3
2
1
5
7
9
10
14
11
15
12
16
13
17
11
13
GM 4700--D
50 ft--lb
(68 N--m)
75 ft--lb
(101 N--m)
75 ft--lb
(101 N--m)
Hydraulic
System