JLG G6-23A Service Manual - Manual (Page 88)

Hydraulic System
8.18 G5-19A, G6-23A
8.11.6 General Cylinder Installation
1. Grease the bushings at the ends of the hydraulic
cylinder. Using an appropriate sling, lift the cylinder
into it’s mounting position.
2. Align cylinder bushing and install pin, lock bolt or
retaining clip.
3. Uncap and connect the hydraulic hoses in relation to
the labels or markings made during removal.
4. Before starting the machine, check fluid level of the
hydraulic fluid reservoir and if necessary, fill to full
mark with Mobilfluid® 424 (ISO Grade 46) Tractor
Fluid.
5. Start the machine and run at low idle for about one
minute. Slowly activate hydraulic cylinder function in
both directions allowing cylinder to fill with hydraulic
oil.
6. Inspect for leaks and check level of hydraulic fluid in
reservoir. Add hydraulic fluid if needed.
7. If no leaks are present, operate the hydraulic
function at least twenty times at full throttle to bleed
any air from the cylinder and hoses.
Note: To bleed air from the tilt cylinder, operate the tilt
function along with the lift cylinder as described above.
More operation cycles may be required to clear all air
from the system.
8. Wipe up any hydraulic fluid spillage in, on, near and
around the machine, work area and tools.
9. Close and secure the engine cover.
8.11.7 Steering Cylinders
The steering cylinders are attached to each axle center
housing. The steer cylinders are covered in the
appropriate Carraro axle literature.
MAH0160
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