SECTION 5 - MAST COMPONENTS
31215825
5-19
Mast Assembly Procedure - MVL/MSP
Mast Section 1 - Assembly
1.
Place mast section-1, rail (open) side up
(See Figure 5-14.
on a clean, flat surface
(preferably a table or
work bench capable of supporting the weight of the entire
mast assembly)
. Slide mast out over end of work surface
far enough to allow access to the chain anchor attach
hole near the top of the mast.
2.
Locate the two (2) single
(wide)
chain assemblies and
attach to the large equalizer anchor plate
(if not already
attached)
. Lay out the chain/anchor plate assembly with
the anchor plate end towards top of the mast.
(Be certain
floor surface is clean and free of any metal chips or debris
which may stick to lubricated chains)
.
3.
Insert the chain/anchor plate assembly end into the top
of mast section-1 and secure using the large anchor
plate attach pin, spacers, and pin keeper.
Mast Section 2 - Assembly
NOTE:
When sliding mast sections together, be careful not to
scratch or score the anodized finish in the slide pad chan
-
nels.
4.
Locate mast section-2, carefully slide mast section-2
closed rail into section-1 open rail. Slide sections
together until ends are even.
5.
Insert slide pads into the slide pad channels at bottom
end of mast between section-1 and -2,
(one on each side
of the mast)
, with beveled surface facing out towards
section-1.
6.
Thread slide pad attaching bolts,
(two (2) 1/4
”
-20UNC x 3/
8” long hex head bolts, place a flat washer under head of
each bolt)
, through holes in mast section-2 inside rail,
into the slide pad inserts. Thread in enough to hold pad
in place.
7.
Shim slide pads using the following steps:
NOTE:
Always use the an even amount of shim material behind
slide pads on both sides of the mast rails. This will keep
mast sections centered in rail channels and prevent any
distortion of the mast section.
a. Start with a.036” thick shim and a.075” thick shim
per side at each slide pad.
b. Slide shims into place between slide pad and mast
rail. Tighten the slide pad mounting bolts, be sure
there are no air gaps between shims, shim and mast
or shim and slide pad when tightened.
Figure 5-16. Chain/Anchor Plate Installation
(Mast Section-1 - Shown Cut-Away)
1.
Anchor Plate Pin
4.
Long Spacer
2.
Short Spacer
5.
Pin Keeper
3.
Chain/Anchor Plate Assy.
6.
Keeper Screw (a)
NOTE:
(a) Apply Medium Strength Threadlocking Compound
to threads.
1
2
3
4
5
6
Figure 5-17. Mast Bottom End - Slide Pad Installation
(Typical)
1.
Slide Pads
2.
Shim Stock
3.
Slide Pad Bolts/Washers (a)
NOTE:
(a) Apply Medium Strength Threadlocking Compound
to threads.
1
2
3
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