JLG 4017RS Service Manual - Manual (Page 67)

3-27 3614RS, 4017RS
Boom
4. 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.
5. With the sling still under the third boom section, install
the bottom front wear pads and backing plates on the
first boom section. Lower the third boom section and
install the top front and side wear pads and backing
plates on the first boom section. Do not shim or tighten
bolts at this time.
6. Retract the second, third and fourth boom sections the
remainder of the way into the first boom section.
Note: Shim wear pads as needed to maintain an even gap of
0,5-1,5 mm (0.002-0.06 in) between the wear pads and the next
boom section. The number of shims can vary at each shim
point.
7. Shim all wear pads on the rear of the second boom
section and front of the first boom section. Torque as
required.
8. Attach the extend chains (15) at the bottom front of the
first boom section. Install the lock nut and jam nut.
9. Attach the retract chain (16), pins and clips to the
clevises (17) at the rear of the second boom section.
Note: Adjust all extend chains using the measurement taken in
the beginning of the tear down procedure. Depending on the
extent of the parts being replaced, the above measurement is to
be used as a starting point ONLY.
10. Remove the caps from the Tilt hoses (18)(and if
equipped) Auxiliary hoses (19) and connect to the
appropriate fittings at the rear of the second boom
section. Torque as required.
11. Using a suitable sling around the barrel end of the Tilt
cylinder (20), raise the Tilt cylinder into boom head.
Align the Tilt cylinder barrel end bore with the boom
head bore (21) and install the Tilt cylinder pin and
mounting bolt and nut (22).
M 7610 Z
15
MZ7290
17
19
18
16
20
21
22
24
23