SECTION 5 - MAST COMPONENTS
5-20
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c. Check mast section for side play. If play exists
add.015” shims dividing the thickness equally
between both sides of mast. Insert shims until the
shims cannot be inserted halfway by hand with the
mast pulled to the opposite side.
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"-20UNC x
3/8" 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.
11.
Lift cylinder installation into the bottom of Mast Section
1 and 2.
NOTE:
The cylinder rod needs to be extended out of the cylinder
approximately 12 in. (30cm) before installation for later
attachment of the upper chain anchor block to mast sec
-
tion-2. Remove any protective caps on the extend and
return ports temporarily to allow rod extension. Catch any
oil draining out of cylinder to avoid spillage onto work
area. Be careful not to nick or scour rod surface when
extending and during installation.
12.
Slide the lift cylinder into the closed rail side of mast sec
-
tion-2 and the cylinder mount into mast section-1
closed rail, with the manual descent valve pointing
down towards the back of the mast assembly.
13.
Check the mount side to side clearance. Use mounting
shims of equal thickness on each side to center the
mount in the closed rail of section-1, if necessary.
14.
Install the cylinder mounting reinforcement plates 1
each side and secure the cylinder assembly to the mast
using the cylinder mounting screws and washers. Apply
Medium Strength Threadlocking Compound to the
screw threads before final tightening.
Figure 5-18. Mast Top End - Slide Pad Installation
(Typical)
1.
Slide Pads
3.
Sequence Cable Bracket
2.
Shim Stock
4.
Slide Pad Bolts/Washers (a)
NOTE:
(a) Apply Medium Strength Threadlocking Compound
to threads.
1
4
4
2
3
Figure 5-19. Lift Cylinder Mount Installation
1.
Cylinder Mount
3.
Mast Reinforcement Plate
2.
Shim Stock
4.
Mount Screws/Washers (a)
NOTE:
(a) Apply Medium Strength Threadlocking Compound
to threads.
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