JLG 9MP Service Manual - Manual (Page 58)

SECTION 5 - MAST COMPONENTS
5-14 – JLG Lift – 3121163
11. At the bottom of mast section-2, slide the lift cylinder
assembly into mast section-2, with the cylinder
mount inserted into mast section-1.
12. Slide the mount into mast section-1 and check for
side to side clearance. Use mounting shims of equal
thickness on each side to center the mount in the
closed rail portion if necessary.
NOTE: If hydraulic cylinder needs to be extended, the pro-
tective caps on the extend and return ports will need
to be temporarily removed. Be careful not to nick or
scour rod surface when extending, also catch any oil
draining out of cylinder to avoid spillage onto work
area.
13. Slide mast section-2 out of mast section-1 approxi-
mately one foot.
14. Assemble the cylinder anchor block to the cylinder
rod end using the anchor plate/block attach pin and
snap ring.
Lift Cylinder - Install
1. Cylinder and Mount Assy. 4. Mounting Bolts/Washers (b)
2. Cylinder Mount Shims (a) 5. Mast Section 2
3. Support Plate
Notes: (a) If reassembling a cylinder assembly previously
removed from the mast, note which shim set was
disassembled from each side.
If assembling a new cylinder assembly into the
mast, shim the mount evenly on each side until the
new cylinder assembly has no side to side
movement in the mast channel.
(b) Apply Loctite #242 to mounting bolt threads on
final assembly.
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5
Install Cylinder Anchor Block to Top of Lift Cylinder
1. Cylinder Anchor Block 3. Cylinder Rod (Extended)
2. Attach Set Screw (a)
Notes: (a) Apply Loctite #242 to threads before final assembly.
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