JLG Lull 1044C-54 II Series Service Manual page 296

Frame Tilt and Oscillation
Bushing Replacement
Assembly, Frame Tilt Cylinder
7-14
1. Fig. 7-7 shows both types of rod end configurations and bushing
locations. Remove pivot bushings (Item 1) using a bushing driver and
hammer or press. Drive one bushing all the way through to remove
other bushing.
2. Install new bushings so they are flush with outer edge boss to 0.02"
below. For machines with lower (rod end) pivot bushing installed in
front axle: Install bushing so that it is centered in axle boss.
1. (Ref. Fig. 7-7) Install two (2) orifices (Item 5) using a large, flat bladed
screw driver.
2. Install two (2) O-ring plugs (Item 4).
3. Lubricate new O-ring with hydraulic oil and install inside piston (seals
rod to piston).
4. Lubricate new O-ring, backup ring, seals, and wear rings with hydraulic
oil and install on head (Item 12). Using a seal driver, install new wiper
seal in head. Lubricate wiper seal with hydraulic oil.
5. Slide head (Item 12), stroke limiter (Item 8) and piston (Item 9) onto
rod (Item 11). Lubricate threads on rod with hydraulic oil and install rod
nut (Item 10). Torque rod nut to 1540-1675 ft-lbs.
6. Lubricate new seal and wear rings with hydraulic oil and install on
piston.
7. Apply removable (blue) thread locking adhesive to threads on (1) set
screw (Item 7). Coat inside of barrel (Item 2) with hydraulic oil.
Carefully insert rod and head into barrel. Do not damage seals during
assembly. Install and snug set screw (Item 7).
8. Install two (2) O-ring fittings (Item 6).
9. Install counterbalance valve cartridges.
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