Great Plains Verti-Till Field Update - Manual (Page 9)

Great Plains Manufacturing, Inc. Update Lift Cylinders 9
08/06/2007 596-186M
Remove Old Clevis: SN1063+
If your implement is serial number 1062 or lower, skip to
“Remove Old Cylinder: SN1062-”.
31. Loosen the collar bolt on the clevis at the rod end
of each transport lift cylinder (these are the cylinder
ends disconnected at step 28).
Note: New clevis assembly is deferred until step 49, to
provide working space for pin upgrade.
32. Skip to “Remove Lug Bushing” on page 10.
Remove Old Cylinder: SN1062-
If your implement is serial number 1063 or higher, it
already has the current cylinder and pin. Skip to
“Remove Lug Bushing” on page 10.
Refer to Figure 16
!
CAUTION
Open JIC connections slowly, and bleed off any residual pres-
sure.
Starting with the left side:
33. Disconnect the FJIC end of the base and rod
end hydraulic hoses. Protect the hoses from ground
contact or other contamination.
34. Before completing this step, note the orientation of
the cylinder ports and the elbow fittings.
Loosen jam nuts on the Male ORB ends of each
elbow fittings the cylinder ports. Unscrew, remove
and save the existing:
EL 3/4MJIC 3/4MORB (elbows)
35. Remove any cotter pin or retaining bolt at the base
end of each lift cylinder.
36. Tie a line to the cylinder, remove the pin and lower
the cylinder to the ground.
Figure 15
Clevis Replacement
27040
1
13
1
Figure 16
Left Arm Old Cylinder
21553
3
64
2
1
64 51
59
1 2
64
3
3