Lift Cylinder Repair – No. 2 and 3 (Left and Right) (Fig. 35)
Figure 35
IMPORTANT: To prevent damage when clamping the
cylinder barrel in a vise, clamp only on the pivot end.
Do not clamp the vise jaws against the smooth shaft
surface. Protect the shaft surface before mounting
in the vise.
6. Remove and discard all seals and back-up rings
(Items 4, 5, 12, 7, 8, 11).
7. Wash the parts in a safe solvent. Dry the parts with
compressed air. DO NOT wipe them dry with a cloth or
paper as lint and dirt may remain.
1. After removing the cylinder, pump the oil out of the
cylinder into a drain pan by SLOWLY moving the cylin-
der’s piston in and out of the cylinder bore.
8. Inspect the internal surface of the barrel for damage
(deep scratches, out-of-round, etc.). Inspect the head,
shaft and piston for evidence of excessive scoring,
pitting, or wear. Replace any defective parts.
2. Plug the ports and clean the outside of the cylinder.
3. Mount the cylinder in a vise so the shaft end of the
cylinder is tilted up slightly. Do not close the vise so
firmly that the barrel could become distorted.
9. Put a light coating of hydraulic oil on all new seals and
back-up washers. Install the new seals and back-up
washers (Items 4, 5, 12, 7, 8, 11). Install the head
(Item 9) onto the shaft (Item 6). Install the piston (Item 3)
onto the shaft and tighten the lock nut (Item 2).
4.
Remove the retaining ring (Item 10). Grasp clevis
(Item 13) at end of shaft and use a twisting and pulling
motion to carefully extract piston (Item 3), shaft (Item 6),
and head (Item 9) from the barrel (Item 1).
10. Put a light coating of hydraulic oil on all cylinder parts
to ease assembly. Slide the piston, shaft and head into
the barrel. Install the retaining ring (Item 10) to secure
the assembly in the barrel.
5.
Securely mount the shaft (Item 6) in a vise and
remove the lock nut (Item 2) from the piston end of the
shaft. Remove the piston (Item 3). Slide the head
(Item 9) off of the shaft.
Greensmaster® 3100
Page 4 - 53
Repairs
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