JLG 4017RS Service Manual - Manual (Page 63)

3-23 3614RS, 4017RS
Boom
10. Remove the extend chain (26) from top of fourth boom
section. Clean and inspect chain. Replace if damaged.
11. Inspect the boom and welds. Consult your local
authorized service distributor if structural damage is
detected.
12. Inspect hardware, wear pads, mounting points, chains
and other components visible with the second boom
section. Replace any item if damaged. (Refer to Section
3.15, “Boom Extend and Retract Chains - 3614RS &
4017RS,” and Section 3.16.1, “Wear Pad Inspection.”)
13. It is recommended that if any chain or hose is damaged
that ALL chains or hoses are replaced.
3.10.5 Fourth Boom Section Removal Only
Note: Removal and installation of the hose carrier can also be
performed by removing only the fourth boom section if
required.
1. Disconnect the extend chain clevis (27) from the rear of
the fourth boom section.
2. At the rear of the boom, label, disconnect and cap both
Tilt hoses (28) and (if equipped) both Auxiliary hoses
(29) from the tubes attached to the third boom section.
Cap all fittings to prevent dirt and debris from entering
the hydraulic system.
3. Loosen and remove the two bolts securing the hose
carrier (30) to the third boom section.
4. Remove all wear pads, shims and backing plates from
the front of the third boom section. Label and tag each
set of wear pads being removed.
5. Place a sling around the front of the fourth boom
section. Lift and slide the two boom sections 75% of the
way out of the third boom section. Set the boom head
down on a suitable support, then center the sling to be
able to balance the two boom sections being removed.
Carefully pull the fourth boom section the remainder of
the way out of the third boom section and set the fourth
boom section down on suitable supports.
3.10.6 Hose Carrier Removal/Installation
Refer to Section 3.11, “Hose Carrier Assembly,” for detailed
hose carrier removal and installation.
MZ7360
26
MZ8370
27
29
30
28