JLG 1850SJ Service Manual - Manual (Page 118)

SECTION 4 - BOOM & PLATFORM
4-32 – JLG Lift – 3121619
51. Apply moly paste to the I.D. of the sheave bearings.
Install the sheaves to section 2 boom.
52. Coat the two sheave center bolts with JLG Threadlocker
P/N 0100019 and the sheave plate retaining bolts with
JLG Threadlocker P/N 0100011. Install the sheave plates
and rope retainer blocks to section 2 using the retaining
bolts. Torque the sheave center bolts to 178 ft.lbs. (241
Nm). Torque the sheave plate retaining bolts to 41 ft.lbs.
(55 Nm)
53. Coat the bolts with JLG Threadlocker P/N 0100011.
Install the bottom rear wear pad to section 2 using
washers, and bolts. Torque the bolts to 28 ft.lbs. (38
Nm)
NOTE: Boom section 1 weighs approximately 6045 lbs. (2742 kg).
54. Place boom section 1 on a proper supporting device.
55. 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® to section 2 on the end that
will go into section 1 only. Apply super lube to all outer
surfaces of interior wear pads after they are installed.
Slide sections 2.3,4, and 5 as an assembly into section 1
using proper lifting procedures.
NOTE: Position the deflectors so the surface is 3-4 mm from the
section 2 bottom plate.
56. Coat the bolts with JLG Threadlocker P/N 0100011.
Install the section 3 retract ropes to section 1 using
deflectors, bolts, nuts, washers, and keepers.
57. Coat the bolts with JLG Threadlocker P/N 0100011.
Install the front bottom wear pads to section 1 using
washers, bolts, and shims. Torque the bolts to 41 ft.lbs.
(55 Nm).
58. Coat the bolts with JLG Threadlocker P/N 0100011.
Install the front side wear pads to section 1 using wash-
ers, bolts, and shims. Torque the bolts to 43 ft.lbs. (58
Nm).
59. Coat the bolts with JLG Threadlocker P/N 0100011.
Install the front top wear pads to section 1 using wash-
ers, bolts, and shims. Torque the bolts to 28 ft.lbs. (38
Nm).
60. Coat the bolts with JLG Threadlocker P/N 0100011.
Install the cover to the section 1.
NOTE: Center the cover over the hole in section 1.
61. Install the cover to side section 1 boom.
62. Coat the bolts with JLG Threadlocker P/N 0100011 and
install the boom length bracket.
63. Route cables and hose’s out thru the power track.