JLG 4017PS Service Manual - Manual (Page 67)

3-29 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
Boom
or tighten bolts). Install top rear wear pads, backing
plates and bolts (front bolts are drilled and tapped for
grease fittings. do not shim or tighten bolts).
2. Grease the inside first boom section on area’s where
the second boom section wear pads will slide.
3. Install the retract chains (3), pins and clips to bottom
front inside of the first boom section.
4. Install both tilt hoses (4) and both auxiliary hoses (5)
to the tubes mounted at the bottom front of the first
boom section. Make sure both sets of hoses are run
through the opening at the bottom front of the first
boom section and run down the inside center of the
boom section
Note: Keep the retract chains, tilt and auxiliary hoses
centered in the first boom section while installing the
second boom section into the first boom section.
5. Using a suitable sling, balance the second, third and
fourth boom sections 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 sections onto a suitable support and reset
sling under the boom head of the fourth boom
section. Carefully slide the second, third and fourth
boom sections 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 TM 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 sections and apply
Loctite
® 242 TM 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 TM 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 (6), pin and clip to the clevis
at the rear of the fourth boom section.
10. Attach the retract chains (7), 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.
MZ5780
3
4
5
3
MZ5730
7
6