JLG 4017RS Service Manual - Manual (Page 71)

3-31 3614RS, 4017RS
Boom
5. Loosen and remove upper clamp (40) securing both Tilt
hoses (37) and (if equipped) both Auxiliary hoses (38).
6. Label, disconnect and cap both Tilt hoses (37) and
(if equipped) both Auxiliary hoses (38). Cap all fittings to
prevent dirt and debris from entering the hydraulic
system.
7. Slowly pull each hose assembly the remainder of the
way out of the rear boom assembly.
8. Disconnect the rope/wire from each end of the hose
assemblies.
3.12.4 Carrier Tilt/Auxiliary Hose Installation
1. Connect the previously removed rope/wire to the new
Tilt hoses (37) and (if equipped) both Auxiliary hoses
(38).
2. Carefully feed the hoses through the rear of the boom
assembly while pulling the wire/rope connected to the
hose from the front of the boom head.
3. Carefully feed the hoses through the rear of the boom
assembly while pulling the wire/rope connected to the
hose from the bottom rear of the boom assembly.
4. Remove any caps and connect each Tilt hoses (37) and
(if equipped) both Auxiliary hoses (38) to the previously
labeled connection. Torque as required.
5. At the rear of the boom, tighten the previously
loosened clamps (39) securing the Tilt hoses (37) and (if
equipped) both Auxiliary hoses (38).
3.13 BOOM CHAIN REMOVAL/INSTALLATION
- 4017RS
The removal of the extend and/or retract chain can only be
accomplished with the complete tear down of the boom.
3.14 BOOM SECTIONS ADJUSTMENT -
4017RS
3.14.1 Chain Adjustments
The chains are adjusted by tightening and/or backing off the
adjusting nuts at the threaded end of the chains. The
opposite chain adjusting nut usually must be loosened
whenever this procedure is performed.
Fully retract and level the boom.
The boom is properly adjusted whenever the following
parameters are met.
A. 127-137mm (4.9-5.4 in)
B. 180-190mm (7.08-7.48 in)
C. 45mm (1.77 in) (No Adjustment)
If adjustments are needed: Start the machine, level the
boom and extend the boom 0,91m to 1,2m
(3 ft to 4 ft). Turn OFF engine.
MZ7570
38
37
M 7860 Z
A B
C