JLG 1850SJ Service Manual - Manual (Page 114)

SECTION 4 - BOOM & PLATFORM
4-28 – JLG Lift – 3121619
19. Install the rear bottom wear pads to the outside of sec-
tion 4. Coat the retaining bolts with JLG threadlocking
compound P/N 0100011 and secure the wear pads with
the bolts and washers. Torque the bolts to 28 ft.lbs. (38
Nm).
20. Coat the inside diameter of the sheave bushings with
moly paste and install the wire rope sheaves to the rear
of section 4 boom using the bushings.
21. Coat the sheave retaining bolts with JLG Threadlocker P/
N 0100019 and the sheave plate/retainer block retaining
bolts with JLG Threadlocker P/N 0100011. Install the
sheave plate and rope retainer blocks to the rear of sec-
tion 4 using the retaining bolts. Torque the sheave
retaining bolts to 178 ft.lbs. (241 Nm). Torque the sheave
plate/retainer block bolts to 40.5 ft.lbs. (55 Nm)
22. Install the section 4 extend ropes to section 4.
NOTE: Boom section 3 weighs approximately 2632 lbs. (1194 kg).
23. Place boom section 3 on a proper supporting device.
24. Apply Super Lube® lubricant (JLG p/n 3020042) to all 4
sides of the boom approximately 3 to 4 feet on both
ends. Apply Super Lube® only to the insertion end of
section 4. Apply Super Lube® to all outer surfaces of inte-
rior wear pads after they are installed. Avoid getting
Super Lube® on painted surfaces. Slide the section 4/
section 5 assembly into section 3 using proper lifting
procedures. The section 5 end of the section 4/5 assem-
bly must be raised after section 4 is inserted in section 3
to allow the four extend rope anchors to clear the top of
the four extend sheave mounts at the section 5 end of
section 3.