JLG 660SJ Service Manual - Manual (Page 183)

SECTION 4 - BOOM & PLATFORM
3121202 – JLG Lift – 4-11
Assembly
NOTE: When installing fly section wear pads, install same
number and thickness of shims as were removed
during disassembly.
1. Measure inside dimensions of the base and mid
sections to determine the number of shims required
for proper lift.
2. Measure inside dimensions of the mid section to
determine the number of shims required for proper
lift.
3. Install side, top and bottom wear pads to the aft end
of fly section; shim evenly to the measurements of
the inside of mid section.
4. Install retract wire ropes into aft end of fly section,
route wire ropes thru holes in side of fly boom sec-
tion and pull into slot.
5. Install side, top and bottom wear pads to the aft end
of mid section; shim evenly to the measurements of
the inside of mid section.
WHEN ASSEMBLING BOOM SECTIONS, ENSURE THAT THE BOOM
SLIDING TRAJECTORIES HAVE BEEN CLEARED OF CHAINS,
TOOLS, AND OTHER OBSTRUCTIONS.
6. Shim the insides of the boom sections for a total of
1/16 inch (0.062) clearance (if the action is centered,
there will be 1/32 clearance on each side).
Figure 4-14. Routing Installation of Retract Wire Ropes