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

Frame Tilt and Oscillation

Installation

Oscillation Control Block
Rear Oscillation Lock Cylinder Installed on Machine
Rear Oscillation Lock Cylinder Removed from Machine
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(Ref. Fig. 7-20) Use the following control block installation procedures
when the rear oscillation lock cylinder is installed on the machine. For
installation procedures when the cylinder has been removed, see below.
1. Clean mating surfaces of rear oscillation lock cylinder and oscillation
control block.
2. Lubricate two (2) O-rings (Item 7) with hydraulic oil and install in control
block.
3. Position control block on cylinder and secure with three (3) capscrews
(Item 3) and lockwashers (Item 4). Torque capscrews evenly to 80
ft-lbs.
4. Attach hydraulic hoses to fittings on oscillation control block (Item 6).
5. For models with control manifold hydraulics, connect electrical lead
(Item 9) at control block.
6. Start engine and tilt frame fully left and right several times to purge air
from the hydraulic system. Shut off engine and check for leaks.
(Ref. Fig. 7-20) Use the following control block installation procedures
when the rear oscillation lock cylinder is removed from the machine. For
installation procedures when the cylinder is installed on the machine, see
above.
1. Clean mating surfaces of rear oscillation lock cylinder and oscillation
control block.
2. Lubricate two (2) O-rings (Item 7) with hydraulic oil and install in control
block.
3. Position control block on cylinder and secure with three (3) capscrews
(Item 3) and lockwashers (Item 4). Torque capscrews evenly to 80
ft-lbs.
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