JLG 1500SJ Service Manual - Manual (Page 312)

SECTION 4 - BOOM & PLATFORM
4-66 – JLG Lift – 3121262
4. Raise the cylinder into position to allow the jib lift
barrel pivot pin to be installed and install the pin.
5. Secure the pin in place with the keeper pin. Apply
JLG Threadlocker P/N 0100011 to the retaining bolt.
Install the retaining bolt to secure the keeper pin and
torque to 165 ft.lbs. (224 Nm).
6. Remove the lifting device supporting the cylinder
and the lifting device supporting the jib.
7. Function check the cylinder to ensure it operates
properly and there is no leakage.
4.11 JIB STRAIGHT SHIMMING PROCEDURE
See Figure 4-17., Jib Straight Shimming.
1. Install the jib lock cylinder and fully extend the rod
through the bearing housings in the jib rotator and
jib pivot.
2. Align the jib pivot straight with the jib assembly.
3. Insert a 16 gauge shim between the wear pad and
pivot pad mount.
4. Add shims (16 gauge and 20 gauge) as required to
fill the gap between the wear pad and the edge of
the bottom plate of the jib rotator.
5. Shim until the thinnest shim can not fit. Do not over
shim and cause jib pivot and jib assembly misalign-
ment.
6. When shimmed properly, the jib pivot and jib assem-
bly should line up straight as shown below.
ALIGN JIB PIVOT STRAIGHT
WITH JIB ASSEMBLY AS SHOWN