OPERATOR'S MANUAL

51OTHER ADJUSTMENTS AND REPLACEMENTS
2. Tension the crawler in the lifted position, so
that the distance "A" (clearance between the
track roller and the inside surface of the
crawler) is 10 to 15 mm (see illustration), (In
this case, the crawler seam is positioned on
the top centre between the idler and the
sprocket.
To avoid serious injury or death:
A Do not work under the machine in this
condition.
A For your safety do not rely on
hydraulically supported devices, they
may leak down suddenly drop or be
accidentally lowered.
A Make sure that no obstacles, such as
stones, are caught in the crawler. Remove
such obstacles before adjusting the crawler
tension.
A Crawler seam
The ends of the rubber crawler are joined
with a seam. When adjusting the crawlers,
the seam must be positioned on the top
centre between the idler and the sprocket.
If the seam is positioned incorrectly, the
crawlers will be tensioned to loosely, and a
further readjustment will be necessary.
A Rotate the crawler after adjustment one to
two times to check the tension.
A Additionally the following points are to be
observed when adjusting rubber crawlers.
(1) If the crawler slackens more than 0.98
in. (25 mm), readjust them.
(2) Check crawler tension 30 hours after
initial use and readjust if necessary.
Check and adjust thereafter every 50
service hours.
BSpecial Information when Using
Rubber Crawlers
1. When turning, preferably make a slow swing
turn. Avoid spin turns to lessen lug wear and
ingress of dirt.
2. The relief valve may be activated if too much
dirt and sand clog the crawlers. In this case
move the machine for a short distance
straight backwards to let the earth and sand
fall off, then a turn can be made.
3. Avoid using rubber crawler on riverbeds,
stony underground, ferro-concrete and iron
plates. The rubber can be damaged as well
as crawler wear increasing.
(1) Seam (Mark " ") (A) 10 to 15 mm