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13.4 Tensioning the feed belt
Although the feed belt moves slowly and is subjected to a low dynamic load, it will also stretch in
the course of time. The conveyor belt must therefore be regularly tensioned (every 200 hours).
• The feed belt is part of the feed hopper. In order to
perform this maintenance easily, the feed hopper must be
completely swung upwards (see 11.3.8).
• Around the front roller, you will fi nd two tensioners that
are secured by four bolts.
• Measure the distance at both sides between the rear of
the guide plate and the body of the conveyor belt (see
illustration).
• Slightly loosen these four (M10) bolts (1) without com-
pletely removing them.
• Loosen the (M6) tensioning bolt more so that the ten-
sioner presses the roller forwards and gradually tensions
the belt.
• Make sure that the belt is evenly tensioned at both sides said that the roller is not at an angle.
• The tension is correct when you can only pull the underside of the belt 30 mm away from the
body.
• Before retightening the securing bolts, fi rst measure whether the adjustment on the tensioners
is identical on both sides.
• After the bolts (1) have been retightened, remove the tension on the tensioning bolt (2) and
make sure that it does not come into contact with the tensioner.
Finally, also retighten the lock nut.
• Then carefully refi t all of the safety covers.
13.5 Renew the hydraulic oil + oil fi lter
Although the hydraulic system is of the closed type, the oil will become contaminated in the
course of time. This contamination is continuously removed by a hydraulic fi lter. Contamination
of this fi lter will reduce the fl ow of oil so that cavitation damage can occur. It is therefore recom-
mended to renew the oil and also the fi lter every 500 hours.
• In order to gain easy access to all of the relevant parts,
you fi rst remove the large safety cover on the left-hand
side of the machine (see 11.3.2.1).
• Open the fi ller opening (1) of the hydraulic tank.
• Use an external pump to suck all of the oil out of the
tank.
• Unscrew the hydraulic oil fi lter (2).
Summary of Contents for MA 018 010 130
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