JLG 460SJ Service Manual - Manual (Page 114)

SECTION 3 - CHASSIS & TURNTABLE
3-62 – JLG Lift – 3120895
Removing the Track
If the tracks are muddy, it is a good idea to wash them off
or drive the loader through water before removing. If the
tracks are going to be stored in the laid out position just
as they come off the machine, then move the machine to
the storage area to remove the tracks. If the tracks are
going to be rolled up and put on a pallet, it is best to
remove them on a hard surface. Remove the bolts that
hold the track together. These bolts are accessible over
the front tires. After the nuts are removed, pound them
flush with the pad. Drive the machine ahead until the bolts
are at the bottom between tires. Remove the inside bolts
by turning them out with a wrench and punch out the out-
side bolts. Drive the machine ahead and take off the
tracks. If the track is to be rolled up, it is best to set the
track on edge and roll it. Secure the end of the track and
put the loose hardware in the end of the track.
Assuming Normal Wear
It is normal for the bushing to wear down to the bolt and
for the link hole to wear oblong till it is ready to break out
the end.
Adjustment
IMPROPER SLACK ADJUSTMENT COULD CAUSE TRACK PARTS
TO BREAK.
Place a straight edge long enough to reach from the idler
to the drive wheel on the tracks. Measure the maximum
amount of track sag from the high point of the track seg-
ment to the bottom of the straight edge. Properly adjusted
track will have approximately 1 to 2 inches (25 to 50 mm)
slack.
To adjust the slack measurement, move the bolts from the
first hole to the second to create less slack, or from the
second to the first to create more slack.