Skyjack SJ61T Service Manual

Telescopic Boom Series
Models SJ61T & SJ66T
194312
December 2007 Page 163
Section 5 - Procedures Service and Maintenance
5.2-4 Boom Section Wear Pad
Replacement
If wear pads inside the boom sections are worn and
cannot be shimmed to meet the specication, they
must be replaced. Wear pads that are worn past the
specication can impair machine operation. For wear
pad limit specication, refer to Check Wear Pads on
page 162.
The boom sections must be disassembled to replace
the wear pads. Typically the bottom platform-end
and the top counterweight-end pads on each boom
section wear out rst. Check which ones need to be
replaced before disassembly.
NOTE
To disassemble the boom sections, the extension
cylinder and cable assembly inside the boom must
be removed rst. See Extension Cylinder and Cable
Assembly Removal on page 176.
To disassemble the boom sections, the y boom and
mid boom must be slid fully out of the main boom.
Provide enough space at the platform end of the
machine at least the length of boom assembly.
Preparation:
• Remove the jib boom and the platform before
disassembly. Removing these components
limits twisting when lifting, and provides better
control when sliding the boom sections out. See
Platform and Jib Boom Removal on page 164.
If the machine does not have a jib boom, just the
platform is removed.
• Before beginning, place the machine in the
proper shut down position, parked on level
ground.
• Make sure the e-stops are pushed in and the
key is off.
• Turn main power disconnect switch off. Lock out
the switch.
CAUTION
Risk of personal injury or equipment damage if
repositioning boom during this procedure. Use
base controls with auxiliary power (engine off) to
reposition safely.
IMPORTANT
If boom repositioning is necessary during this
procedure, select emergency power position from
start–function enable–emergency power switch,
then activate desired boom function.
When operating on auxiliary power, do not
operate more than one function at a time to avoid
overloading the 12-volt auxiliary pump motor.
CAUTION
Risk of personal injury or equipment damage.
Always use suitable lifting equipment and safe
rigging practices when performing the following
procedures.
NOTE
If boom repositioning is required with the platform
removed and control cables disconnected,
reconnect the two main (24 pin) control cables and
the jib and platform rotate harness (as equipped)
to the platform control box. See Extension Cylinder
and Cable Assembly Removal on page 176.
The machine cannot operate with the two platform
control harnesses disconnected.

Skyjack SJ61T Specifications

General

Brand	Skyjack
Model	SJ61T
Category	Lifting Systems
Language	English