Genie Super Tower, Service Manual

Page: 31 / 45

September 2016 Service Manual
Mast Assembly
Part No. 115411 Super Tower 23
8 Models with safety brake: Remove the
carriage by sliding it out the bottom of the mast
toward the base while holding the safety brake
rollers in the released position with the hex key
wrench.
Models without safety brake: Remove the
carriage by sliding it out the bottom of the mast
toward the base.
9 Slide the column up approximately 12 inches /
30 cm to expose the column stop mounting
fasteners attached to the bottom end of the
top column. Remove the fasteners and the
column stops.
10 Models with safety brake: Insert a hex key
wrench through the access holes in the
column up to release the safety brake.
Position the hex key above the safety brake
rollers. Slide the carriage away from the base
while pulling back on the wrench.
11 Models with safety brake: Remove the
column by sliding it out the bottom of the mast
toward the base while holding the safety brake
rollers in the released position with the hex key
wrench.
Models without safety brake: Remove the
column by sliding it out the bottom of the mast
toward the base.
12 Repeat steps 10 through 12 for each
remaining column.
How to Release the Safety Brake
When Servicing the Mast
The safety brake system can engage when the
machine is tilted horizontally if the hold-down bar is
not used. When the brake is engaged, the columns
can extend but not retract. If the safety brake
system engages while you are servicing the mast,
use one of the following methods described below
to release the brake.
Method A: This method allows you to release each
column in sequence, starting at the carriage and
removing columns one at a time. Refer to Repair
Procedure,
How to Disassemble the Mast
Assembly
.
Method B: This method allows you to release any
column in the assembly regardless of its position,
but requires a custom tool. The tool is a piece of
1/8 to 5/16 inch / 3.2 to 8 mm diameter stiff wire
bent in an L shape with one end1 inch / 25 mm
long and the other end16 inches / 41 cm long. The
installation of a handle on the long end will make it
easier to use. This tool is available from Genie
Industries (Genie part number 33875).
Insert the tool from the bottom of the column into
the safety brake access slot in the inner side wall of
the column. Reach through the far upper end of the
slot and position the short end of the tool above the
safety brake rollers. Slide the carriage away from
the base while pulling back on the tool.