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Repair
312068M 9
Hydraulic Cylinder
Disassembly
Tools Required
• Two - 1 in. open-end wrench
• Two - 1/2 in. open-end wrench
• O-ring pick
1. Relieve pressure, page 3.
2. Turn OFF the main disconnect and lock out power at
the source.
3. Clamp the hydraulic cylinder to a flat surface using
c-clamps or another strong clamping device, ensur-
ing that the cylindrical spacer (114) is to the right.
4. Using the 1/2 in. open-end wrenches, loosen and
remove four hexagonal spacers (113) to create
room to rotate the clevises.
5. Using the 1 in. open-end wrench and the 1 in.
impact wrench, rotate the baffle jam nut away from
the right clevis until one of them breaks loose.
If the left clevis and baffle jam nut break loose from
the hydraulic piston shaft:
6. Remove the clevis and baffle jam nut.
7. Remove the lubricator adapter (120).
8. Loosen and remove the remaining hex
spacers (113) and smooth spacer (114), keeping
the tie rods in place.
9. Remove the left retainer plate (101).
10. Remove the tie rods (115).
11. Remove the left port block and rod bushing assem-
bly.
12. Slide the piston and everything attached to it out the
right side of the cylinder by holding the assembly by
the cylinder and pushing the left end of the piston
shaft against a flat surface.
13. Using a c-clamp, secure the port block (116) of the
remaining assembly.
14. Keeping the piston shaft from rotating using a 1/2 in.
wrench on the piston shaft flats and using a 1 in.
impact wrench on the right clevis, break loose and
remove the right clevis.
15. Remove the activator plate (119) and modified
bushing (118).
16. Remove the retainer plate (101).
For repairs, order Hydraulic Cylinder Repair
Kit 296785.
CAUTION
In the following step, attach the clamps to the port
blocks of the assembly. Attaching clamps to any other
part of the assembly may result in significant damage
when breaking loose the baffle jam nut and clevis.
The clevises and the baffle jam nut were installed
with high strength thread sealant. The following
steps will require significant force to break loose the
baffle jam nut and clevises.
TI11289a1
114
TI11285a1