JLG 1350SJP Service Manual - Manual (Page 277)

SECTION 4 - BOOM & PLATFORM
3121142 – JLG Lift – 4-43
4.3 BOOM LUBRICATION APPLICATION
This procedure applies to booms after assembly or during
annual application using Super Lube® lubricant (JLG p/n
3020042).
1. Position the boom on the boom rest using the 500lb
capacity setting.
2. Telescope main boom section as far as it will extend at
this position, approximately 3 ft. (0.9 m).
3. From the front of the machine (boom pivot end), moder-
ately apply lubricant to the interior surfaces of the base
boom, inner mid boom, and outer mid boom. To pre-
vent misdiagnosis of hydraulic leaks, take care to pre-
vent excessive application of lubrication.
4. At the rear of the machine, apply lubricant to the side,
top and bottom surfaces of the fly boom, outer mid, and
inner mid specifically to wear pad contact paths. To pre-
vent misdiagnosis of hydraulic leaks, take care to pre-
vent excessive application of lubrication.
5. After application of the lubricant is complete, cycle the
boom through its full range of travel 2 times.
4.4 BOOM SHIMMING PROCEDURE
1. Measure and record the dimension and direction of any
sweep found in the fly boom section. Measure and
record the inside width and inside height of the outer
mid boom opening.
NOTE: Wear Pad bolt lengths should be flush to one thread below
the surface of the insert. When installing wear pads in the
following steps, the wear pad bolt lengths may need to be
adjusted as shim thicknesses are adjusted.
2. Install the side wear pads on the fly boom sides. Shim as
necessary to match the outer mid boom dimension
recorded in step 1 ± 1/32” (± 0.8 mm). Shims should be
divided as evenly as possible between the side pads
unless corrections are needed to compensate for sweep
recorded in step 1. If the sweep is to the left the internal
side pads on the left should have more shims than the
right side pads and vise versa.
3. Install the bottom wear pad(s) and shims if applicable
on the fly boom.
SWEEP
MEASUREMENT
TOP VIEW OF BOOM SECTION
Figure 4-14. Measuring Boom Section Sweep