SECTION 2 - SERVICE PROCEDURES
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d. When mast slide pads are shimmed properly, there
should be no side to side movement of slide pad in
rail channel. Mast sections should be snug in chan-
nels but still be able to slide in channel by hand.
8. Insert slide pads into the slide pad channels
(top of mast)
between section-1 and -2, (
one on each side of the mast)
,
with beveled surface facing in towards section-2.
NOTE:
Before fastening and shimming the slide pad on the top
left side of the mast, install a sequence cable bracket
against the mast under the flatwasher.
9. Thread slide pad attaching bolts, two (2) 1/4 in. x 7/8 in.
long hex head bolts, place a flat washer under head of
each bolt, through holes in mast section-1 outside rail
(top of mast)
and into the slide pad inserts. Thread in
enough to hold pad in place.
10. Shim per instructions in step 7, Mast Section 2 - Assem-
bly.
NOTE:
If hydraulic cylinder needs to be extended, the protective
caps on the extend and return ports will need to be
removed. Be careful not to nick or scour rod surface when
extending, also catch any oil draining out of cylinder to
avoid spillage onto work area.
11. Locate the hydraulic lift cylinder, slide the lift cylinder
into the closed rail side of mast section-2 with rod end to
top and port end to bottom of mast. Cylinder should
extend out of mast on both ends. Mount the cylinder
with the manual descent valve assembly facing the back
of the mast, towards mast section-1.
12. Install the cylinder mounting plates at the bottom of the
mast section-1. Mount plates two each side, using (2) two
long pass through bolts and nuts, apply Medium
Strength Threadlocking Compound to the bolt threads
before tightening nuts.
13. Install the mounting pin through the side mounting
brackets and the cylinder valve body and through the
mounting brackets on the other side of the mast. Install
the snap rings to each end of the mounting pin.
14. Insert hydraulic cylinder rod end into chain assembly
anchor block. Secure cylinder rod to anchor block with a
chain equalizer and snap ring. Apply Medium Strength
Threadlocking Compound.
15. Locate chain assembly
(single anchor block with two nar-
row chains)
. Lay out chain assembly with anchor block
end towards mast,
(be certain floor surface is clean and
free of any metal chip or debris which may stick to lubri-
cated chains or lay chains in a clean bucket)
.
16. Slide mast section-2 out of mast section-1 approximately
one foot.
17. 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 on cylinder
rod end.
b. Place sheave wheels
(for wide chain)
on sheave pin,
one each side of anchor block.
c. On outside of each sheave wheel, place a sheave pin
attach bar,
(rectangular plate with threaded holes on
each side of pin bore hole)
.
d. Slide the whole anchor block assembly with sheave
pin, wheels and pin attach bars into top of mast sec-
tion-2.
(Position anchor block with narrow chains fac-
ing mast section-3)
.
e. Attach to top of mast section-2 using two (2) 3/8 in.
x 1/2 in. long socket head-countersunk-flathead cap
screws each side. Apply Medium Strength Thread-
locking Compound.
18. Slide mast section-2 back into section-1 until end are
even.
Mast Section 3 - Assembly
(All Masts)
NOTE:
When sliding mast sections together, be careful not to
scratch or score the anodized finish in the slide pad chan-
nels.
19. Locate mast section-3, carefully slide section-3 closed rail
into section-2 open rail. Slide sections together until
ends are even.
20. Locate one (1) of the attach bracket (one with threaded
holes horizontally aligned to outside of bracket). Attach
using outer set of holes in bottom of mast section-3 with
Four (4) 1/4 in. x 3/4 in. long bolts, place a flatwasher
under head of each bolt.
21. Slide mast section-3, approximately two feet out of the
top of mast section-2.
22. Insert threaded ends of chain assembly
(attached to top
of mast section-1)
, through holes in bracket attached to
bottom of mast section-3. Loosely thread two (2) 1/2 in.
nuts onto stud threads on each chain. Chains will be
adjusted later in assembly.
23. Locate two cable assemblies. Attach the chain anchor
block to lift cylinder using chain equalizer and snap ring.
Attach end of each cable to the top of mast section-3
using two (2) pins to the chain anchor block.
24. Assemble chain sheaves
(for narrow chain assembly)
to
top of mast section-3 as follows;
a. Locate the two (2) narrow chain sheave wheels and
slide onto sheave pin.
b. Slide two (2) short spacer tubes onto sheave pin,
one each end of sheave pin to outside of sheave
wheels.
c. Place two (2) sheave pin attach bars, one each end
of sheave pin to outside of space tubes.
d. Holding complete sheave wheel assembly, slide
assembly into top of mast section-3 and align
threaded holes in sheave pin attach bars with holes
in mast rails.
e. Attach to top of mast section-3 using two (2) 3/8 in.
x 3/4 in. long socket head-countersunk-flathead cap
screws, each side. Apply Medium Strength Thread-
locking Compound.
NOTE:
When sliding mast sections together, be careful not to
scratch or score the anodized finish in the slide pad chan-
nels.
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