SECTION 5 - MAST COMPONENTS
5-4
31215825
5.3 SEQUENCE CABLE REPLACEMENT KIT
A sequence cable replacement kit is available from the JLG
Parts Department to service broken or worn sequence cables.
This kit consists of a replacement sequence cable with the
threaded (top) end attached same as the top end of the fac
-
tory cable. Also included is a clamp (drum/socket type) to
secure the bottom end of the cable. Use the following proce
-
dure to install the replacement cable and clamp kit.
Remove Old Cable
1.
Remove the locking nut from the threaded end of the
cable at the top of the mast and then remove the spring
cap, spring, and spacer washers if installed.
2.
Slide the threaded top end out of the upper anchor
bracket, then at the bottom end pull the cable out
though the sheave pulley/anchor bracket until it is com
-
pletely clear of the machine.
Replacement Cable Installation
1.
Be certain the mast is completely retracted and at the
bottom of travel. Check the mast “Side Profile” at the top
of the mast as shown in Figure 5-2., adjust mast sections
to proper height if necessary.
2.
To determine where the clamp will be installed at the
bottom of the replacement cable, temporarily assemble
the new replacement cable to the top cable anchor
bracket on the mast using the washers, spring, spring
cap and lock nut previously disassembled. Thread the
lock nut on until approximately 1/8 in. (3mm) of threads
are exposed.
3.
At the bottom of the mast, thread the loose end of the
replacement cable through the proper sheave pulley
and through the hole in the sheave pulley/anchor
bracket on the mast section ahead of the sheave pulley.
4.
Grasp the cable and pull on the cable until the spring at
the top of the cable is slightly compressed. Use a black
marker to mark the cable on the top side of the sheave
pulley/anchor bracket. This will determine where the
clamp (drum/socket) sleeve will be positioned on the
cable.
DO NOT CUT THE CABLE AT THE MARKED POINT ON THE
CABLE THIS IS ONLY USED AS A REFERENCE FOR POSI
-
TIONING THE CABLE SLEEVE WHICH WILL REST AGAINST
THE ANCHOR BRACKET ONCE INSTALLED.
Clamp Installation (Drum/Socket Type)
THE MANUFACTURER OF THE DRUM/SOCKET CLAMP REC
-
OMMENDS THE USE OF THEIR CABLE CLAMP ASSEMBLY
KIT (JLG PN - 7023275) TO ASSEMBLE THE CLAMP TO THE
WIRE ROPE. THE KIT CONSISTS OF VISE JAWS TO HOLD THE
WIRE ROPE IN A VISE PROPERLY WITHOUT DAMAGING
ANY ROPE STRANDS AND A PLUG DRIVER TO DRIVE THE
PLUG INTO THE CENTER OF THE WIRE ROPE AND IS ALSO
USED TO FORM THE STRANDS OF THE ROPE DURING
ASSEMBLY.
NOTE:
The tools in the clamp assembly kit may be fabricated if
necessary. The vise clamp consists of vise jaws with a hole
drilled 1/32 in. smaller than the diameter of the wire rope
you are working with (i.e. 1/8 in. rope - 3/32 in. hole.)
The plug driver is a metal tube with a hole in the bottom to
allow the strands of the wire rope to be shaped after the
plug has been tapped into the center of the wire rope.
1.
Using the recommended vise jaws, clamp the wire rope
into a vise with the bottom edge of the black mark made
on the wire rope resting just above the vise jaws.
1.
Cable
3.
Recommended Vise Jaws
2.
Mark on Cable
Go to
Discount-Equipment.com
to
order your
parts
