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4. MAST LOAD ROLLER
1)
2 STAGE MAST(V MAST)
(1)
Remove the carriage assembly and move
them to one side.
(2)
Loosen and remove hexagon nuts and
screws securing lift cylinders to inner mast.
Loosen and remove hexagon bolts and
(3)
nuts securing lift cylinders to outer mast.
(4)
Attach chains or sling to the inner mast
section at top crossmember. Using an
overhead hoist, slowly raise the inner mast
high enough to clear lift cylinder.
(5)
After lowering the lift cylinder rods, and
disconnecting lift cylinder hose, tilt the lift
cylinders(LH and RH) with ropes to the
outer mast.
(6)
Using the overhead hoist, lower inner mast
until top and bottom rollers are exposed.
(7)
Using a plier, remove load rollers from load
roller bracket. Remove side rollers.
Thoroughly clean, inspect and replace all
(8)
worn or damaged parts.
(9)
Reverse the above procedure to assemble.
Refer to MAST ROLLER ADJUSTMENT
paragraph.
(10)
After completing all necessary steps for
load rollers removal, use an overhead hoist
to remove sling or chain around upper
crossmember of the inner mast section.
Lift inner mast upright straight up and out
of outer mast section.
(11)
Replace and reverse above procedure to
install.
Make all necessary measurements and
(12)
adjustments.
Inner
mast
Mast load
roller
Hexagon
bolt
Hexagon
nut
Outer
mast
8-12
Chain
Hexagon nut
Screw
Lift
cylinder
Side
roller
Mast load
roller
100D7MS13
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