JLG SSV10 Service Manual - Manual (Page 76)

SECTION 5 - MAST COMPONENTS
5-4 – JLG Lift – 3121187
5.6 MAST ASSEMBLY INSTALL/REMOVE
Mast Removal
The following components must be removed from the
machine before removing the mast assembly:
With Platform Elevated (approx. 4 ft. (1.2m)) Remove;
• Front Hood (See Section 3.2)
• Drive Motors Cover (See Section 3.2))
• Platform/Material Tray Assembly (See Section 5.3)
- Remove the bottom bolts and unhook the enable
foot switch and entry gate interlock wire harness
from the platform junction box.
With Platform Completely Lowered - (If necessary, use
Manual Descent Valve) Remove;
• Platform Control Console (See Section 4.2)
• Mast Cover (See Section 5.2)
• Platform/Material Tray Assembly (See Section 5.3)
• Battery Charger Assembly (See Section 3.7)
1. Unplug the platform control cable (P4) connector at
the ground control module.
2. Unplug and remove the amber beacon mounted on
the front of the mast assembly.
3. Disconnect and cap the hydraulic extend and return
lines from the hydraulic cylinder either on the vavel
block at the bottom of the cylinder or at the pump
assembly. (See Section 5.5 following for special tool
instructions).
4. Using an overhead crane or suitable lifting device
capable of supporting the weight of the mast assem-
bly, attach a sling strap to the mast.
5. Remove the four (4) mast attach bolts with washers
and nuts securing the mast to the mounting column.
NOTE: When lifting the mast out of the base frame be care-
ful with the manual descent valve, extend and return
lines protruding from the bottom front of the mast
assembly.
6. Carefully lift the mast off the base frame and place
on a suitable work surface.
Mast Installation
To install the mast assembly reverse the Mast Removal
instructions, however perform the following additional
steps during re-assembly.
1. Once assembly is complete cycle the mast up and
down several times, then check the oil level in the
hydraulic reservoir.
Mast Assembly Mounting Bolt Location
1. Mast Mounting Column (a)
2. Mounting Bolt/Washer/Nut Locations (b)
Notes: (a) Battery charger removed.
(b) Apply Loctite #271 to bolt threads on final
assembly.