JLG 4017RS Service Manual - Manual (Page 65)

3-25 3614RS, 4017RS
Boom
4. With the sling still under boom head install the bottom
front wear pads and backing plates on the third boom
section. Lower the fourth boom section and install the
top front and side wear pads and backing plates on the
third boom section. Do not shim or tighten bolts at this
time.
Note: Grease wear pads, bores and pins during assembly.
5. Retract the fourth boom section the remainder of the
way into the third boom section.
6. Shim all wear pads on the front of the third boom
section. Torque bolts to 90 Nm (66 lb-ft).
7. At the rear of the boom, install the hose brackets (2) to
the third boom section securing tilt hoses (3) and (if
equipped) the auxiliary hoses (4).
8. Remove caps on both Tilt hoses and (if equipped) both
Auxiliary hoses. Install hoses and torque as required.
9. Lay the retract chain (5) the length of third boom
section.
10. Install the pin and clip to the retract chain clevis (5) to
the top rear of the fourth section boom.
11. Install the two bolts securing the hose carrier (6) to the
third boom section. Torque as required.
3.10.9 Third and Fourth Boom Section
Installation
1. Install the extend chains on the bottom inside of second
boom section. Lay the extend chain the length of
second boom section.
2. Grease the inside second boom section on areas where
the third boom section wear pads will slide.
3. Using a suitable sling, balance the third and fourth
boom sections and carefully slide 914 mm-1219 mm
(3 ft - 4 ft) into the front of the second boom section. Set
the third and fourth boom sections onto a suitable
support and reset the sling under the boom head of the
fourth boom section. Carefully slide the third and fourth
boom sections into the second boom section. Leave 152
mm-203 mm (6 in - 8 in) of the third boom section out
to be able to install the wear pads in the front of the
second boom section.
4. With the sling still under third boom section, install the
bottom front wear pads and backing plates on the
second boom section. Lower the third boom section
and install the top front and side wear pads and backing
plates on the second boom section. Do not shim or
tighten bolts at this time.
Note: Installation of the retract chain roller from the rear of the
second boom section may be required if removed to access the
extend chain clevis assemblies.
5. Secure the extend chains to the each extend chain
clevises (7)
6. Install the mounting bolts (8) and bracket (9) securing
each extend chain clevises (7).
MZ7330
2
4
3
6 5
MZ7310
8
7
8 9
7