Removal (Fig. 88)
Park machine on a level surface, lower cutting
decks, stop engine, apply parking brake and remove
key from the ignition switch.
Installation (Fig. 88)
1.
1. If fittings were removed from lift cylinder, lubricate
and place new O--rings onto fittings. Install fittings into
cylinder ports using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2.
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
Read the General Precautions for Removing and
2.
installed on one end of pin (item 2). Hold inner jam nut
withwrench andtorque outer jam nutfrom 60to 70ft--lb
(82
Make sure that two (2) jam nuts (item 11) are
3.
lift cylinder removal, thoroughly clean exterior of cylin-
der and fittings.
To prevent contamination of hydraulic system during
to 94 N--m).
IMPORTANT: Make sure to relieve lift system pres-
surebeforeremovingliftcylinder.SeeRelieving Hy-
draulic System Pressure in the General Information
section of this chapter.
3.
Position cylinder barrel clevis to frame.
4. Insert pin (item 2) through frame and cylinder clevis.
Secure liftpin with two (2) jamnuts (item11).Handtight-
en first jam nut to take up as much free play as possible.
While holding first jam nut with wrench, torque second
jam nut from 60 to 70 ft--lb (82 to 94 N--m).
NOTE: To ease assembly, label all hydraulic hoses to
identify their correct position on the lift cylinder.
4.
Put caps or plugs on fittings and hoses to prevent con-
tamination. Tag hydraulic lines for proper assembly.
Disconnect hydraulic hoses from lift cylinder fittings.
5.
clevis. Secure pin to lift arm with cap screw (item 6) and
flange nut (item 4).
Insert pin (item 5) through lift arm and cylinder shaft
5.
Remove cap screw (item 6) and flange nut (item 4)
6.
vent contamination.
Remove caps or plugs placed during removal to pre-
that secure the pin (item 5) to the lift arm. Remove pin
from lift arm and cylinder shaft clevis which will free lift
cylinder from lift arm.
7. Using tags placed during cylinder removal, correctly
attach hydraulic hoses to lift cylinder (see Hydraulic
Hose and Tube Installation in the General Information
section of this chapter).
6.
the pin (item 2). Pull pin from frame and cylinder barrel
clevis.
Remove two (2) jam nuts (item 11) from one end of
8.
9.
Fill reservoir with new hydraulic fluid as required.
Lubricate lift cylinder grease fittings.
7.
8.
Remove lift cylinder from machine.
If hydraulic fittings are to be removed from lift cylin-
der, mark fitting orientation to allow correct assembly.
Remove fittings from cylinder and discard O--rings.
10.After assembly is completed, operate lift cylinder to
verify that hydraulic hoses and fittings are not contacted
by anything.
Groundsmaster 5900/5910
Page 4 -- 121
Hydraulic System
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