JLG DVSP Series Service Manual - Manual (Page 105)

SECTION 5 - MAST COMPONENTS
3121136 – JLG Lift – 5-17
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 channels 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 -
Assembly.
11. Install the lift cylinder mount into the bottom of Mast
Section 1.
12. Slide the mount into mast section-1 and check for
side to side clearance. Use mounting shims of equal
thickness on each side to center the mount in the
closed rail portion if necessary.
NOTE: If hydraulic cylinder needs to be extended, the pro-
tective caps on the extend and return ports will need
to be temporarily 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.
13. Slide mast section-2 out of mast section-1 approxi-
mately one foot.
14. 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 of the mast with the port end resting in the cyl-
inder mount at the bottom of the mount. The manual
descent valve should be pointing down towards the
back of the mast assembly.
15. Loosely assemble the cylinder mount cap onto the
lift cylinder mount to hold the cylinder assembly in
place.
1. Slide Pads 3. Sequence Cable Bracket
2. Shim Stock 4. Slide Pad Bolts/Washers (a)
Note: (a) Apply Loctite #242 to threads.
Figure 5-8. Mast Top End - Slide Pad Installation
(Typical)
1
4
4
2
3
Lift Cylinder Mount Installation
1. Cylinder Mount 3. Mount Reinforcement Plate
2. Shim Stock 4. Mount Bolts/Washers (a)
Note: (a) Apply Loctite #242 to threads.
3
4
1
2