Figure 2. shredding rectangular bales
Allow the front half of the bale to be almost fully
discharged before raising the tailgate to shred the rear
half of the bale. Once the rear half of the bale is moving
on the bed chain, lower the tailgate slightly to allow room
for the bale to rotate within the bale chamber.
When it is necessary to stop shredding part way through
a bale, always stop the bed chain rotation and put it in
reverse for a few seconds before stopping the rotor and
crossbeater(s). This allows the material in the area
around the crossbeater(s) and rotor to be blown clear of
the machine. Failure to do this may result in a blockage
occurring when the machine is re-started.
The length of chop will vary with the condition of the
bale. Fresh clean straw will tend to result in a longer
chop length than that which is old, slightly damp,
weathered or caked together in the bales. The power
consumption will also vary with the material being
shredded. In general, baled silage and damp or caked
straw materials will require a relatively high power input.
Should the rotor or crossbeater(s) become blocked and
material become jammed it may be necessary to turn
the rotor backwards. This may be achieved by pushing
the rotor paddles with a post through the outlet chute.
Further access may be gained by removing the
blockage panels from the front of the upper and lower
rotor housing.
DANGER
care must be taken when removing
blocked material, because crossbeater blades are
extremely sharp. Leather gloves will give some
protection against minor cuts.
IMPORTANT:
The machine is fitted with a shear bolt on
the cross beater drive line. After a blockage, the bolt
may need replacing. If the bolt has failed grease must
be applied to the slipping surfaces via the grease nipple
before the shear bolt is replaced.
IMPORTANT:
The machine is fitted with a slip clutch on
the rotor shaft. If this slips repeatedly, it should not be
tightened until the machine has been examined to check
that there is no fault or blockage. Refer to 'Maintenance'
for the correct clutch setting.
DANGER
the slip clutch may be hot. Care should
be taken when removing it from either the machine
or tractor.
MAINTENANCE
BLADES
When carrying out maintenance work on the blades
enter the bale chamber by the tailgate. Wedge the rotor
and crossbeater(s) to prevent them from turning and
pinching hands and fingers between the bale restraint
fingers and the knives.
When replacing knives use spanners with long handles
which will allow the bolts to be removed whilst avoiding
contact with the sharp edges of the knives.
Always keep your hands away from the edges of
blades - particularly new ones, as they are extremely
sharp. The blades have a sharp trailing edge, which
remains sharp even when the leading edge is blunt.
Leather gloves will give some protection against minor
cuts.
BED CHAIN
To tension the bed chain, release the front lock nut and
jack the mounting bush using the other nut. The bed
chain should be tensioned such that the chain can be
lifted 50mm above the bed midway between the drive
sprockets. Retighten the lock nuts.
The position of the rear sprocket scrapers must now be
altered. To adjust them, slacken the nut on the outside
of the body, slide it towards the sprocket and retighten
the nut.
Figure 3. Sprocket scraper position.
If the bed chain becomes tight in use, check that the
grooves in the sprockets have not packed tight with
straw or silage. Adjust the sprocket scrapers so that they
run tightly against the bottoms of the grooves in the
centre of the sprockets.
If the area beneath the bed chain becomes blocked or
requires attention, remove the 2 bolts retaining the panel
underneath the machine and remove the blockage.
CROSSBEATER REMOVAL
DANGER
the knives fitted to the crossbeater(s)
are extremely sharp and should be handled with
care. Before attempting to remove the crossbeater
7
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