Greensmaster 3250--D Hydraulic SystemPage 4 -- 101
Disassembly (Fig. 69)
1. Pump oil out of cylinder into a drain pan by slowly
moving rod in and out of cylinder bore. Plug ports and
clean outside of cylinder.
IMPORTANT: To prevent damage when clamping
cylinder barrel in a vise, clamp only on ball joint
location.Donot clamp thevise jawsagainstthe cyl -
inder barrel or rod surface.
2. Mount cylinder in a vise by clamping vise on barrel
balljoint location of cylinder. Use of a vise with soft jaws
is recommended.
3. Remove both heads from the barrel:
A. Use a spanner wrench to rotate head clockwise
untiltheedgeoftheretainingringappearsinthebar-
rel opening. Insert a screwdriver under the beveled
edge of t he retaining ring to start the retaining ring
through the opening. Rotate the head counter--
clockwise to remove retaining ring from barrel and
head.
B. Grasp end of rod and use a twisting and pulling
motion to carefully extract rod assembly (with ball
joint end head) from cylinder barrel. Remove non--
balljointendheadassemblyfromotherendofbarrel.
NOTE: Piston (item 13) and ball joint end head (item
14) are not removable from cylinder rod.
4. Remove and discard seals, back--up rings, wear
ringsandO--ringsfromnon--balljointendhead.Also,re-
moveseals(items9and10)andwearring(item11)from
piston.
CAUTION
Useeyeprotectionsuch asgoggleswhenusing
compressed air to dry cylinder parts.
5. Wash cylinder parts in clean solvent. Dry parts with
compressedair.Donotwipepartsdrywithpaperorcloth
towels.Lint from towelsin a hydraulic system willcause
damage.
6. Carefully inspect internal surface of barrel for dam-
age (deep scratches, out--of--round, etc). Inspect rod,
both heads and piston for evidence of excessive scor-
ing,pittingorwear. Replaceentiresteeringcylinder ifin-
ternal components are damaged.
Assembly (Fig. 69)
NOTE: The seal kit includes several O--rings, backup
rings and wear rings that cannot be accessed on the
Greensmaster3250--Dsteeringcylinderduetocylinder
design.
1. Identify components from seal kit that aretobeused
in cylinder r epair. Put a coating of clean hydraulic oil on
all new seals, back--up rings and O--r ings.
2. Install new seal, wiper, back up ring and O--ringonto
non--ball joint end head (item 4). Position backup ring,
seal and wear ring to the piston (item 13).
IMPORTANT: Duringcylinderassembly,paycareful
attention to the retaining ring slots in the barrel to
insure that the piston and head seals do not lodge
in the slots.
3. Coat all internal cylinder parts with a light coat of
clean hydraulic oil. Carefully slide rodassembly into the
barrel being careful to not damage seals.
4. Lubricate non--ball joint end head (item 4) assembly
withcleanhydraulicoilandcarefullyslideitontorodand
into barrel.
5. Secure both heads to barrel:
A. Align retaining ring hole in the head with the ac-
cess slot in the barrel.
B. Insert theretainingring hookintothehole andro-
tate head clockwise until the retaining ring is com-
pletely pulled into the barrel and the ring ends are
covered.
C. Apply silicone sealer to barrel access slot.
Hydraulic
System
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