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Groundsmaster 5900/5910 Hydraulic SystemPage 4 -- 143
IMPORTANT: An orifice is placed beneath the hy-
draulic fitting in the control manifold LS port. If this
fitting is removed from manifold, make sure to re-
move orifice and label itsposition for assembly pur-
poses.
7. If hydraulic fittings are to be removed from manifold,
mark fitting orientation to allow correct assembly. Re-
move fittings from manifold and discard O--rings.
Installation (Fig. 103)
1. If fittings were removed from manifold:
A. Lubricate new O--rings with clean hydraulic oil.
Install lubricated O--rings on fittings.
IMPORTANT: When installing the orifice in man-
ifold port LS, make sure that orifice is flat in the
base of the port cavity. Manifold damage is pos-
sible if the orifice is cocked in the cavity.
B. If fitting was removed from manifold port LS,
install orifice in port.
C. Install fittings intomanifold openings using marks
made during the removal process to properly orien-
tate fittings.
D. Refer to Figure 104 for straight fitting installation
torque. For information on tightening procedures for
adjustable fittings, see Hydraulic Fitting Installation
in the General Information section of this chapter.
2. Install steering/cooling fan manifold to the frame us-
ing Figure 103 as guide. Torque the flange head screws
that secure manifold to mount plates from 106 to 159
in--lb (12.0 to 17.9 N--m).
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. Using labels placed during removal, correctly con-
nect wire harness connectors to solenoids on manifold.
5. Make sure hydraulic tankis full. Add correct oilifnec-
essary.
6. Lower and secure hood.
1. Straight fitting (P & CH)
2. Dust cap
3. Quick fitting (G)
4. O--ring
5. Manifold assembly
6. O--ring
7. O--ring
8. 90
o
fitting (M1)
9. Straight fitting (M2)
10. O--ring
11. Straight fitting (CF & LS)
12. O--ring
13. O--ring
14. O--ring
15. Orifice (LS)
16. Tee fitting (CD)
Figure 104
UP
6
14
15
10
8
2
3
1
11
9
7
12
13
4
5
1
7
10
11
10
12
13
14
20 ft--lb
(27 N--m)
50 ft--lb
(67 N--m)
75 ft--lb
(101 N--m)
25 ft--lb
(33 N--m)
25 ft--lb
(33 N--m)
75 ft--lb
(101 N--m)
16
Hydraulic
System