Installation - JLG Lull 1044C-54 II Series Service Manual

Boom and Transfer

Installation

Rear Carriage Tilt Cylinder
6-26
3. Tag and disconnect two (2) hydraulic hoses (Item 7) from elbows on
both cylinders (Item 6). Cap fittings and hoses.
4. Support each cylinder with sling(s) and crane, or other suitable means.
Make sure equipment has sufficient capacity to support weight of
cylinder.
WARNING: To avoid personal and/or equipment damage, support
hydraulic cylinders before removing pins. Use suitable
blocking and lifting devices when removing heavy machine
components.
5. Loosen and remove capscrew (Item 4) and lockwasher (Item 3) from
rod end lock pin (Item 2).
6. Remove lock pin from rod end cylinder pivot pin (Item 5).
7. Remove rod end cylinder pin from outer boom (Item 1).
8. Slowly lower supported cylinder until it rests on main frame.
9. Loosen and remove capscrew (Item 12) and lockwasher (Item 11) from
base end lock pin (Item 10).
10. Remove lock pin from base end cylinder pivot pin (Item 13).
11. Remove base end cylinder pin from transfer carriage/boom cradle
(Item 14).
12. Slowly remove the cylinder from the machine and take it to a location
suitable for inspection and disassembly.
(Ref. Fig. 6-14) The following steps are required to install rear carriage tilt
cylinders.
1. Using sling(s), crane, or other suitable means, position base end of
cylinder (Item 6) in its proper location on the transfer carriage/boom
cradle (Item 14).
WARNING: To avoid personal and/or equipment damage, make sure each
cylinder is properly supported until it is completely installed.
Note: Be sure to apply thread locking compound to the threads of the capscrews
before installing them.
2. Align cylinder with pin bosses in transfer carriage/boom cradle and
install pivot pin (Item 13). Secure pivot pin with lock pin (Item 10),
lockwasher (Item 11), and capscrew (Item 12). Torque capscrew to
55 ft-lbs.
3. Place rod end of cylinder in its proper location and insert rod end pivot
pin (Item 5) to secure the cylinder to the outer boom (Item 1).
4. Secure pivot pin with lock pin (Item 2), lockwasher (Item 3), and
capscrew (Item 4). Torque capscrew to 55 ft-lbs.
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