Greensmaster 3300/3400 Hydraulic SystemPage 5 -- 97
NOTE: Theportsontheliftcontrolmanifoldaremarked
for easy identification of components. Example: S1 is
thesolenoidvalveandPis thesupplyport(seeHydrau-
lic Schematic to identify the function of the hydraulic
lines and cartridge valves at each port location).
WARNING
If liftmanifold isattached to machine, makesure
that cutting units are fully lowered before loos-
eninghydraulic linesor cartridge valvesfrom lift
manifold. If cutting units are raised as compo-
nents are loosened in manifold, cutting units
may drop unexpectedly.
Removal (Fig. 70)
1. Park machine on a level surface, engage parking
brake, lower cutting units and stop the engine.
2. Remove right side cover next to operator seat to al-
low access to lift control manifold.
CAUTION
Before continuing further, read and become fa-
miliar with General Precautions for Removing
and Installing Hydraulic System Components in
this section.
3. Thoroughly clean hydraulic line ends and fittings on
liftcontrolmanifoldtopreventhydraulicsystemcontam-
ination.
4. Label all hydraulicand electrical connections foras-
sembly purposes.
5. Disconnect wire harness connectors from solenoid
valve coils on lift manifold.
IMPORTANT: Before disconnecting hydraulic lines
from the manifold fittings, make sure each hose or
tube is labeled to ensure it can be connected to the
correct manifold fitting/port.
6. Disconnecthydraulichoseandtubeassembliesand
remove their respective O--rings from the manifold fit-
tings.Allowhosesandtubestodrainintoasuitablecon-
tainer.Caporplughosesandmanifoldfittingstoprevent
contamination.
7. Remove two (2) flange head screws (item 16) that
secureliftmanifoldtomachineframe.Removemanifold
assembly from the machine.
IMPORTANT: Before removing any hydraulic fitting
fromthehydraulicmanifold,makesuretheposition
offittingisobservedand recorded to ensureproper
fitting installation.
IMPORTANT: A flow control orifice is placed be-
neathhydraulic fittings inlift controlmanifoldports
C4andC6. If either ofthese fittingsis removedfrom
the lift junction manifold, make sure to remove ori-
fice and label its position for assembly purposes.
Also note location of groove in orifice for assembly
purposes.
8. If hydraulic fittingsare to beremoved from manifold,
mark fitting orientation to allow correct assembly. Re-
move hydraulic fittings and O--r ings from manifold. Dis-
card removed O--rings.
Installation (Fig. 70)
IMPORTANT: Ifinstallinganorificeinmanifoldport,
make sure that orifice is flat in the base of the man-
ifold port. Manifold damage is possible if the orifice
is cocked in the cavity.
1. Iffittingswereremovedfromjunctionmanifold,lubri-
cate and place new O--rings onto fittings. Install fittings
into manifold openings making sure that orifice (ports
C4 and C6) is correctly placed before threading fitting
into manifold.Usemarks made during theremoval pro-
cess to correctly orientate fittings. Properly tighten fit-
tings (see Hydraulic Fitting Installation in the General
Information section of this chapter).
2. Position manifold assembly to the machine frame.
Secure assembly to the frame with two (2) flange head
screws (item 16).
3. Remove caps andplugs from disconnectedhydrau-
lic lines and manifold fittings.
4. Lubricate and position new O--rings to fittings on
manifold.Uselabelsplacedduringtheremovalprocess
toproperlyinstallh ydrauliclinestomanifoldfittings(see
Hydraulic Hose and Tube Installation in the General In-
formation section of this chapter).
5. Connect wire harness connectors to solenoid valve
coils on lift manifold.
6. Install right side cover.
Hydraulic
System
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