JLG 4017 Service Manual - Manual (Page 35)

3.11 4017
Boom
5. Using a suitable sling, balance the second, third and
fourth boom section and carefully slide
914 mm - 1219 mm (3 ft - 4 ft) into the front of the
first boom section. Set the second, third and fourth
boom section onto a suitable support and reset sling
under the boom head of the fourth boom section.
Carefully slide the second, third and fourth boom
section into the first boom section. Leave 152 mm -
203 mm
(6 in - 8 in) of the second boom section out to be
able to install wear pads in front of the first boom
section.
6. With sling still under boom head, Apply Loctite 242 ®
to the wear pad mounting bolts. Install the top wear
pads, washers and bolts in the front of the first boom
section. Torque to 90 Nm (66 lb-ft). Lower the
second, third and fourth boom section and apply
Loctite 242
® to the wear pad mounting bolts, Install
bottom wear pads, backing plates, shims, and bolts
in the front of the first boom section. Torque to
90 Nm (66 lb-ft). Install both left side and right side
front wear pads, backing plates, shims and bolts in
the front of the second boom section. Torque to
90 Nm (66 lb-ft).
Note: Shim ALL side wear pads as needed to maintain
a minimum gap (1.6 mm - 1/16 in) the horizontal
direction or a snug fit. The number of shims can vary at
each shim point.
7. Install the bottom left and right side wear pads,
backing plates, shims and bolts at the rear of the
second boom section.Shim the top wear pads on the
rear of the second boom section. Shim the top left
and right wear pads on the rear of the second boom
section. Apply Loctite 242
® and torque bolts to 90
Nm (66 lb-ft).
8. Retract the second, third and fourth boom sections
the remainder of the way into the first boom section.
9. Attach the retract chain (5), pin and clip to the clevis
at the rear of the fourth boom section.
10. Attach the retract chains (6), pins and clips to the
clevises at the rear of the third boom section.
Note: Installing the clevis pins in the third boom section
can only be done when the first boom section and the
second boom section access holes are aligned.
MZ1200
Hose Carrier Mounting
Bolts (2)
6
5
Tilt Hoses
Auxiliary Hoses