Main Boom; Removal; Disassembly - JLG t350 Service And Maintenance Manual

SECTION 4 - BOOM & PLATFORM
4.2

MAIN BOOM

Removal

NOTE: Prior to removing the boom, it will be helpful to
extend the boom fly section out far enough to access
the telescope cylinder retaining pin if the boom is to
be disassembled.
1. Using an adequate lifting device, support the weight
of the main boom.
NOTE: The main boom weighs approximately 626 lbs. (284
kg).
2. To gain access to the tele cylinder, remove the mas-
ter cylinder. Refer to Section 4.3, Master Cylinder.
3. Tag and disconnect the hydraulic hoses at the rear
of the telescope cylinder.
4. Place blocking under the lift cylinder to prevent it
from dropping. Remove the bolt, keeper pin, and
pivot pin securing the rod end of the lift cylinder to
the boom.
5. Remove the bolt, nut, and pivot pin securing the top
of the timing link to the boom.
6. Remove the bolt, keeper pin, and pivot pin securing
the boom to the turntable. Lift the boom away from
4-2
the machine and place it on proper supports for ser-
vicing.

Disassembly

1. Remove the bolt, keeper pin, and lower pivot pin
securing the platform pivot.
– JLG Lift – 3121198