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Groundsmaster 4000--D Hydraulic SystemPage 4 -- 135
Removal (Fig. 93)
1. Park machine on a level surface, lower cutting
decks, stop engine, apply parking brake and remove
key from the ignition switch.
2. Read the General Precautions for Removing and
Installing Hydraulic System Components at the begin-
ning of the Service and Repairs section of this chapter.
3. To prevent contamination ofhydraulic system during
lift cylinder removal, thoroughly clean exterior of cylin-
der and fittings.
NOTE: To ease installation, tag the hydraulic hoses to
show their correct position on the lift cylinder.
4. Disconnect hydraulic hoses from lift cylinder.
5. Removelock nut,flatwashersand capscrew thatse-
curethepin assemblytothe liftarm. Removepinassem-
bly from lift arm and cylinder shaft clevis which will free
lift cylinder from lift arm.
6. Remove one cotter pin from upper lift pin. Pull upper
lift pin from frame and cylinder barrel clevis.
7. Remove lift cylinder from machine.
8. If hydraulic fittings are to be removed from lift cylind-
er, mark fitting orientation to allow correct assembly. Re-
move fittings from cylinder and discard O--rings.
Installation (Fig. 93)
1. If fittings were removed from lift cylinder, lubricate
and place new O--rings onto fittings. Install fittings into
port openings 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. Position cylinder barrel clevis to frame and insert up-
per lift pin intoframeandclevis.Secure lift pin with cotter
pin.
3. Insert pin assembly through lift arm and cylinder
shaft clevis. Secure pin to lift arm with cap screw, flat
washers and lock nut.
4. Attach hydraulic hoses to lift cylinder (see Hydraulic
Hose and Tube Installation in the General Information
section of this chapter).
5. Fill reservoir with hydraulic fluid as required.
6. After assembly is completed, operate lift cylinder to
verify that hydraulic hoses and fittings are not contacted
by anything.
Hydraulic
System