Service Manual
September 2016
Mast Assembly
28
Super Tower
Part No. 115411
2-3 Lifti ng Pulley
2-3
Lifting Pulley
How to Replace a Lifting Pulley -
Mast Installed
1
Fully lower the carriage.
2
Unwind approximately 1 to 2 feet / 30 to 60 cm
of cable from the winch drum.
3
Tip the machine backwards and rest the top of
the number one mast on a suitable structure
capable of supporting it. Secure the top of the
mast to the structure.
4
Attach an overhead crane to the base. Lift the
machine to a horizontal position and slide a
second structure under the mast next to the
base.
5
If replacing an upper pulley, slide the column
that is above the pulley to be replaced forward.
If replacing a lower pulley, slide the column
with the pulley to be replaced forward. Push
the column forward approximately 6 inches /
15 cm to expose the lower column stop.
6
Remove the column stop mounting fasteners.
7
Slide the column backwards until the pulley
that is to be replaced is exposed.
8
Remove the two mounting fasteners from the
pulley mounting block. Remove the pulley
assembly.
9
Remove the retaining fastener that attaches
the pulley to the mounting block.
Note: Note the quantity and location of the shims
and spacers before disassembling.
10 Remove the old pulley.
11 Install the cable onto the new pulley.
12 Apply Loctite® removable thread sealant to
the pulley mounting fastener and install the
fastener through the pulley and pulley guard
into the pulley mounting block.
Crushing hazard. Failure to
properly route the cable could
result in a winch brake failure.
Component damage hazard.
Do not allow the cable to
become twisted during
installation or mast sequencing
problems may occur.
Note: Be sure the cable guard is located over the
retaining pin on the pulley mounting block. Be sure
the pulley spins freely after reassembling the pulley
assembly.
.
1 pulley
2 pulley guard
3 pulley mounting block
13 Apply Loctite® removable thread sealant to
the fastener and install the pulley assembly
onto the column.
14 Assemble the columns in reverse order of
disassembly.
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