Groundsmaster 4100--D/4110--DHydraulic System Page 4 -- 140
Lift/Lower Manifold Service
1. Lift/lower manifold body
2. Solenoid valve (S4, S6 & S9)
3. Solenoid coil (5 used)
4. Nut (8 used)
5. Relief valve (RV2)
6. Relief valve (RV1)
7. Solenoid valve (S1)
8. Nut
9. Solenoid coil (4 used)
10. Solenoid valve (S2, S3, S7 & S8)
11. #4 zero leak plug with O--ring
12. Solenoid valve (S5)
Figure 102
2
3
6
8
9
10
11
1
5
7
12
4
3
3
4
2
10
11
UP
20 ft--lb
(27 N--m)
25 ft--lb
(34 N--m)
5 ft--lb
(6.7 N--m)
20 ft--lb
(27 N--m)
20 ft--lb
(27 N--m)
20 ft--lb
(27 N--m)
5 ft--lb
(6.7 N--m)
25 ft--lb
(34 N--m)
20 ft--lb
(27 N--m)
NOTE: The ports on the lift/lower manifold are marked
for easy identification of components. Example: S1 is
solenoid valve S1 and P is the gear pump connection
port (see Hydraulic Schematic in Chapter 10 -- Foldout
Drawings to identify the function of the hydraulic lines
and cartridge valves at each port location).
NOTE: The lift/lower manifold assembly includes sev-
eralzeroleakplugs.Theseplugshaveataperedsealing
surfaceontheplugheadthatisdesignedtoresistvibra-
tion induced plug loosening. The zero leak plugs also
haveanO--ringasasecondaryseal.Ifzeroleakplugre-
moval is necessary, lightly rap the plug head using a
punch and hammer before using an allen wrench to re-
move the plug: the impact will allow plug removal with
less chance of damage to the socket head of the plug.