4.8 Jib Cylinder; Removal; Installation - JLG T500J Service And Maintenance Manual

SECTION 4 - BOOM & PLATFORM

4.8 JIB CYLINDER

Removal

1. Swing the boom away from the tongue.
2. Remove the platform from jib assembly. See Section 4.1
- Platform and Rotator.
3. Tag and disconnect the hoses running to the jib cylin-
der. Cap or plug all openings.
NOTE: The jib cylinder weighs approximately 40 lbs. (18 kg).
4. Remove the lower retaining pins and pivot pin from
channel and rod end of the cylinder.
5. Using an adequate supporting device, support the jib
cylinder so it doesn't fall when the pin is removed.
6. Remove the retaining pins and pivot pin from barrel end
of the cylinder and remove the cylinder from the
machine.
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Installation

1. Using suitable lifting device, align the jib cylinder barrel
end with mounting holes on jib cylinder assembly and
install the pivot pin and retaining pin into barrel end of
the cylinder.
NOTE: The jib cylinder weighs approximately 40 lbs. (18 kg).
2. Install the retaining pins and pivot pin into rod end of
the cylinder.
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3. Connect the hoses running to the jib cylinder as tagged
during removal.
4. Function the jib cylinder through several cycles and
check for proper operation and any leakage.
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