Maintenance On Rubber Tracks; Rubber Tracks Tension Check - JLG X17JPLUS Operator, Safety, And General Maintenance Manual

MUX17JP021602
12.8.MAINTENANCE ON RUBBER TRACKS
12.8.1.Rubber tracks tension check
Stop the machine on a flat and solid ground. Raise the machine off the ground sa‐
fely and, if needed, support it by applying stable blocks or jack stands under the
undercarriage frame. In correspondence with the undercarriage central roller,
measure distance ʺAʺ of the bottom of the roller to the hard internal part of the
rubber belt. Track tension is normal if measure ʺAʺ is between 10 and 15 mm. If
the tension is not within the above measure, or too tight, please follow the proce‐
dure illustrated in the following paragraph.
As an alternative to the above‐mentioned procedure, you can follow the procedu‐
re below. In this case, the check is less accurate and precise. However, effective
for evaluating if the rubber track is too slack.
Stop the machine on a flat and solid ground. In correspondence of the upper skid
of the carriage, measure distance a of the bottom of the skid to the hard internal
part of the rubber belt, lifting the belt manually. The track tension is normal if me‐
asure ʺAʺ is between 10 and 15 mm. If the tension is not within the above measu‐
re, or too tight, please follow the procedure illustrated in the following
paragraph.
Fig. 155 Tensioning check 1
Fig. 156 Tensioning check 2
Boom Lift Models X17JPLUS
MAINTENANCE
155