JLG 110HX Service Manual - Manual (Page 42)

SECTION 2 - PROCEDURES
2-18 – JLG Lift – 3120864
15. Pull boom sections apart several feet.
16. Using the lifting equipment, raise the cylinder to
obtain sufficient clearance for removal of the cylin-
der.
17. Connect a suitable lifting device to the extension
chain adjust rod on top of the telescope cylinder.
18. Using both lifting devices, carefully pull the cylinder
from the boom assembly.
NOTE: The extension rod will come out of the boom twice as
far as the telescope cylinder proportionally.
19. Continue sliding the cylinder and extension rod out
of the boom until the rod can be separated from the
extension chain by removing the chain clevis attach
pin.
20. Using the lifting equipment, remove the extension
chain bar.
21. Continue sliding the cylinder from the boom, laying
the extension chain on top of the base boom as the
cylinder is coming out.
22. Using another lifting device, support the sheave
wheel end of the cylinder and remove the cylinder
from the boom assembly.
23. Carefully lift the cylinder clear of the boom assembly
and lower to the ground or suitably supported work
area.
Telescope Cylinder Installation
1. Using suitable lifting equipment, carefully lower the
cylinder to the boom assembly.
2. Using another lifting device, support the sheave
wheel end of the cylinder and install the cylinder into
the boom assembly.
3. Slide the extension cylinder into the boom, sliding
the extension chain in place as the cylinder is mov-
ing in.
4. Using the lifting equipment, install the extension
chain bar.
5. Continue sliding the cylinder and extension rod into
the boom until the rod can be attached to the exten-
sion chain by installing the chain clevis attach pin.
BARREL
HEAD
RETAINER
HEAD SEALS
ROD
SPACER
NUT
PISTON
PISTON
SEALS
SETSCREW
HOLDING
VALVE
EXTEND-A-REACH
LIFT CYLINDER
Note: Due to design changes, the cylinders shown may not be an exact representation of those on your particular machine.
Figure 2-6. Typical Hydraulic Cylinders - Sheet 5 of 5