![background image](http://html1.mh-extra.com/html/oshkosh-corporation/jlg-20msp/jlg-20msp_service-and-maintenance-manual_1655764110.webp)
SECTION 5 - MAST COMPONENTS
31215825
5-15
5.6 MAST ASSEMBLY INSTALLATION
Mast Removal
1.
The following components must be removed from the
machine before removing the mast assembly:
• Rear Covers
• Drive Motor Cover
• Disconnect the Platform Control Console from the Mast
mounted junction box
• Platform Assembly
2.
Disconnect the positive battery cable from the left side
battery.
3.
Unplug the platform control cable connector at the
ground control module.
4.
Remove the clamp attaching the platform control cable
from inside the mast mounting column.
5.
Disconnect the spring and clamp attaching the AC
receptacle cable inside the mast mounting column.
6.
Under the machine, disconnect and cap the hydraulic
extend and return lines from the hydraulic cylinder.
7.
Using an overhead crane or suitable lifting device capa
-
ble of supporting the weight of the mast assembly,
attach a sling strap to the mast.
(If installed, use the
optional crane lifting lug on the back of the mast.)
8.
Remove the six (6) mast attach bolts with washers and
nuts securing the mast to the mounting column.
9.
Lift the mast off the base frame and place on a suitable
work surface.
Mast Installation
To install the mast assembly reverse the Mast Assembly
Removal instructions, however perform the following addi
-
tional steps during re-assembly.
1.
Install machine covers per instructions Section 3.
2.
Once assembly is complete cycle the mast up and down
several times, then check the oil level in the hydraulic
reservoir.
Figure 5-13. Mast Assembly Installation
1.
Mast Mounting Column
2.
Mounting Bolt/Washer/Nut Locations (a)
NOTE:
(a) Apply High Strength Threadlocking Compound to
bolt threads on final assembly.
1
2
2
Go
to
Discount-Equipment.com
to
order
your
parts