JLG 4013PS Service Manual - Manual (Page 38)

Boom
3-6 3508PS, 3509PS, 3512PS, 3513PS, 4008PS, 4009PS, 4012PS, 4013PS, 4017PS, 40.8, 40.9
3.3.4 Third Section Boom Installation
(12 & 13M)
Second Section Boom Installation
(8 & 9M)
1. Install the bottom rear wear pads (8) and bolts onto
the innermost boom section. Apply Loctite ® 243 TM
and torque to 90 Nm (66 lb-ft). Install the bottom rear
left and right side wear pads, backing plate and bolts
(do not shim or tighten bolts). Install top rear wear
pads, backing plates and bolts (do not shim or
tighten bolts).
2. Grease the inside of the next boom section on areas
where the innermost boom section wear pads will
slide.
3. Using a suitable sling, balance the innermost boom
section and carefully slide 1 m to 1,5 m (3’ to 4’) into
the front of the next boom section. Set the innermost
boom section head onto suitable supports and reset
sling under the boom head. Carefully slide the
innermost boom section into the next section. Leave
15 cm to 20 cm (6” to 8”) of the innermost boom
section out to be able to install wear pads on the
front of the next boom section.
4. With the boom head still supported, install the top
wear pads, washers and bolts in the front of the
larger boom section. Apply Loctite
® 243 TM and torque
to 90 Nm (66 lb-ft). Remove the boom head from
supports and install the bottom wear pads, backing
plates, shims and bolts in the front of the larger
boom section. Apply Loctite
® 243 TM and torque to 90
Nm (66 lb-ft). Install both left and right side front
wear pads, backing plates, shims and bolts in the
front of the larger boom section. Apply Loctite
® 243 TM
and torque to 50 Nm (37 lb-ft).
Note: Shim ALL side wear pads as needed to maintain
a minimum gap in the horizontal direction or a tight fit.
The number of shims can vary at each shim point except
on the bottom wear pads.
Note: Light lubrication of the boom wear surfaces with a
factory authorized grease is recommended to keep the
boom wear surfaces lubricated properly.
5. Tighten all wear pads after ensuring the minimum
gap requirements have been met. Refer to Section
3.10.1, “Wear Pad Inspection.”
3.3.5 Second Section Boom Installation
(12 & 13M)
1. Install the bottom rear wear pads (9) and bolts onto
the second boom section. Apply Loctite ® 243 TM and
torque to 90 Nm (66 lb-ft). Install the bottom rear left
and right side wear pads, backing plate and bolts (do
not shim or tighten bolts). Install top rear wear pads,
backing plates and bolts (do not shim or tighten
bolts).
2. Grease the inside of the first boom section on areas
where the third boom section wear pads will slide.
3. Using a suitable sling, balance the first and second
boom sections and carefully slide 1 m to 1,5 m
(3’ to 4’) into the front of the third boom section.Set
the third boom section head onto suitable supports
and reset sling under the boom head. Carefully slide
the first and second boom sections into the first
section. Leave 15 cm to 20 cm (6” to 8”) of the
second boom section out to be able to install wear
pads on the front of the first boom section.
MZ1750
8
MZ1730
9