SECTION 5 - MAST COMPONENTS
31215825
5-21
15.
Slide mast section-2 out of mast section-1 approxi
-
mately 8 in. (20cm).
16.
Assemble one of the narrow chains sets
(#444)
and to
the small chain equalizer anchor plate using the pins,
washers and cotter keys. Set aside.
17.
Locate the chain anchor block and slide it onto the
hydraulic cylinder rod end extending out the top of
mast section 2.
18.
Lay out the chain
(#444)
/anchor plate assembly with
anchor plate end towards mast,
(be certain floor surface
is clean and free of any metal chip or debris which may
stick to lubricated chains or lay chains in a clean bucket)
.
19.
Assemble the chain/anchor plate assembly and the
chain anchor block to the cylinder rod end using the
anchor plate/block attach pin and snap ring.
20.
Assemble chain sheaves on chain assembly anchor
block
(attached to cylinder rod end)
and attach to mast
section-2 using following steps;
a. Insert sheave pin through anchor block and cylinder
rod on cylinder rod end.
b. Load three 1" flat washers onto the sheave pin on
each side of the anchor block.
c. Place sheave wheels
(for wide #544 chain)
on sheave
pin, one each side of anchor block.
d. On the outside of each sheave wheel, place another
1" flatwasher, a roll pin
(into the slot in each end of the
pin)
, and then place a sheave pin support bar
(rect
-
angular plate with threaded holes on each side of pin
bore hole)
.
e. Slide the whole anchor block/cylinder assembly
with sheave pin, wheels and pin support bars into
top of mast section-2.
f. Align the threaded holes in the attach bars on each
side of the mast and attach to top of mast section-2
using two (2) 3/8”-16UNC x 1/2” long socket head-
countersunk-flathead capscrews each side. Coat
threads with Medium strength Threadlocking Com
-
pound and tighten.
21.
Remove the cylinder mount cap - shoulder screws and
apply Medium Strength Threadlocking Compound to
the threads. Install the screws and torque to 85 ft.
lbs.(115 Nm)
22.
Tighten the center lift cylinder mount screw, this screw
keeps the cylinder assembly from rotating in the mount.
23.
Slide mast section-2 back into section-1 until top and
bottom ends are even.
Figure 5-20. Install Chain/Anchor Block to Top of Lift Cyl
-
inder
1.
Attach Pin
4.
Attach Pin - Snap Ring
2.
Chain/Equalizer Assembly
5.
Cylinder Rod (Extended)
3.
Chain/Anchor Block
1
2
3
4
5
Figure 5-21. Mast Section 2 - Chain/Anchor Block
(Sheave Wheel Assembly)
1.
Support Bar Screws(a)
4.
Sheave Wheel Assy.
2.
Pin Support Bars
5.
Sheave Pin
3.
Narrow Washers
6.
Square Keys
NOTE:
(a) Apply Medium Strength Threadlocking Compound
to threads.
1
1
2
2
3
3
3
5
6
3
4
4
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