JLG X14JH Operator Manual - Manual (Page 77)

E) Cracks due to external factors
The cracks on the track outer surface (the one in contact with the ground) are very often due
to contacts with gravel, sharp stones, sharp material such as metal plates, nails, glass, which
can cause cuts. From the point of view of rubber property this cannot be avoided although it
depends from working conditions.
The cracks on the circumference outer surface and on the rubber edge come from the contact
the track has with the crawler body or with concrete sharp edges. The crack increases quite
slowly.
Even if it does not look good, the track can still be used in hard working conditions.
4.3.4 REPLACING RUBBER TRACKS
The grease inside the hydraulic track is under pressure. Therefore never loosen grease nipple
valve 1 for more than one turn; otherwise it might be expelled under the pressure of the
grease, putting the operator at risk. Never loosen grease nipple 2.
In case of gravel or mud jammed between the sprocket and the track link, remove them
before loosening.
Removing rubber track
1. Park the machine on a solid and flat surface, lift it and support it safely by means of the
stabilisers.
2. Remove screws and take off plate 3 to have access to regulation.
3. To loosen the track, slowly unscrew valve 1 in an
anti‑clockwise direction for no more than one turn.
One turn of valve 1 is sufficient to loosen the track.
4. If the grease does not start to drain, turn the track
slowly.
5. Insert 3 steel pipes (4) inside the track in the space
between the rollers. Turn the driving wheel backwards
(5) in a way that the steel pipes proceed with the track
BOOM LIFT MODELS X14JH
JLG
74 X14JHR0220311
PERICOLO
1
2
5202 02B H19
3
4
5
6
5202 02B H1 9
DANGER