Filter
Top Products
Groundsmaster 4000--D/4010--D Hydraulic SystemPage 4 -- 109
NOTE: The ports on the combination manifold are
marked for easy identification of components. Example:
P4 is the gear pump connection port, S1 is the lift/lower
solenoidvalve andSV10is theenginecooling fansolen-
oid valve (see Hydraulic Schematic in Chapter 10 --
FoldoutDrawings toidentify the function ofthe hydraulic
lines and cartridge valves at each port).
WARNING
If combination manifold is attached to machine,
make surethat cutting units are fully lowered be-
forelooseninghydrauliclineso r cartridgevalves
from combination manifold. If cutting units are
raised as components are loosened in manifold,
cutting units may drop unexpectedly.
NOTE: The combination manifold uses several zero
leak plugs. These plugs have a tapered sealing surface
on the plug head that is designed to resist vibration in-
duced plug loosening. The zero leak plugs also have an
O--ring as a secondary seal. If zero leak plug removal is
necessary, lightly rap the plug head using a punch and
hammer before using an allen wrench to remove the
plug: theimpact will allowplug removal withless chance
of damage to the socket head of the plug.
Combination Manifold Service
For combination manifold cartridge valve service pro-
cedures, see Control Manifold Cartridge Valve Service
in this section. Refer to Figures 76, 77 and 78 for com-
bination manifold cartridge valve and plug installation
torque.
IMPORTANT: A flow control orifice is located be-
neathseveralplugs inthe combinationcontrol man-
ifold. If an orifice is removed from a manifold port,
make sure to label its position for assembly pur-
poses. When installing the orifice in the manifold,
make sure that the orifice is properly tightened in
the port.
IMPORTANT: A flow control orifice is placed be-
neath hydraulic fittings in combination manifold
ports C2, C3 and C5. If any of these fittings is re-
moved from the manifold, make sure to remove ori-
fice and l abel its position for assembly purposes.
Also note location of groove in orifice for assembly
purposes. When installing the orifice in the man-
ifold, make sure that the orifice is flat in the base of
the port.
1. #4 z ero leak plug
2. #6 z ero leak plug
3. Orifice (0.040)
4. #4 z ero leak plug
5. Orifice (0.063)
6. Check valve
7. Compensator valve
Figure 77
2
3
6
8
1
5
7
4
1
1
1
1
2
20 ft--lb
(27 N--m)
25 ft--lb
(34 N--m)
25 ft--lb
(34 N--m)
20 ft--lb
(27 N--m)
1. #6 hex head plug 2. #4 hex head plug
Figure 78
1
2
1
1
9to11ft--lb
(12to14N--m)
20 to 26 ft--lb
(27to35N--m)
Hydraulic
System