Teagle Tomahawk C12, Инструкция

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When the cutting edges of the hammers become worn
and rounded, the hammers should be turned or replaced.
There are four cutting edges on each hammer which can
be used before the hammer will need replacing.
Running the Tomahawk with a PTO shaft speed of
1000rpm will make sure the mill rotor is rotating at
2000rpm extending hammer and rod life. Adjusting the
rotational speed of the bale chamber to match the power
of the tractor driving the Tomahawk will make sure that
the hammers do not lay back avoiding excessive wear on
hammers and rods.
Turning the hammer at the correct time will make sure
that all four cutting edges can be used. A hammer that is
allowed to wear too long may weaken the unused pivot
hole so that the second end can’t be used.
To prevent excessive wear, the hammers must be turned
or replaced as necessary when the wear curve reaches
the centreline of the hammer. See figure 8.
Figure 8. Maximum Hammer Wear
Never attempt to enter the bale chamber to replace
the hammers or knives unless the PTO has been
disengaged, the engine has been stopped, the key
removed and the machine come to rest. Whilst power is
connected to the machine the red beacon will remain
flashing until the rotor comes to rest.
It will be necessary to remove the restraint assembly as
described in paragraph 12.12 to give good access to the
rotor.
When carrying out maintenance work on the hammers
wedge the mill rotor to prevent it from turning reducing the
risk of trapping hands between the hammers and restraint
fingers due to unexpected movements. Once the restraint
has been removed remove the 2 small triangular plates
and the bolt retaining the rod holding the hammers.
To rotate the hammers it will be necessary to open the
side guard at the front on the left hand side of the
machine. Align the rod of the row of hammers to be
rotated or replaced with the removal holes. Using the rod
removal tool (CM2088), start to remove the rod, then drive
the rod out towards the rear of the machine with a second
person inside the bale chamber to catch the hammers
and bushes.
Once the rod has been withdrawn the hammers can be
turned or replaced as required.
Whilst the pivot rod is removed inspect the pivot rod
mounting holes in the support discs of the mill rotor for
elongation and wear. The pivot rod should also be
inspected for wear, if lightly worn it can be installed with
the hammers in a different position on the rod extending
their life.
It is important that the hammers directly opposite each
other are rotated or replaced at the same time to maintain
the balance of the rotor.
When replacing complete sets of hammers it is
recommended that the hammers are weighed and sets of
matched weight are installed opposite to each other.
Hammers should be replaced in the pattern shown on
Page 19 otherwise the rotor will be out of balance and
vibrate excessively.
Figure 9. Hammer replacement
Once the hammers have been replaced and the pivot
rod is fully inserted replace the bolt and two locking nuts
to retain the rod. Refit the bale restraint, rod removal
cover plates and secure the guard.
Once complete, run up the machine to check the rotor
for vibration. If excessive vibration occurs stop the rotor
and investigate the cause, in particular check the pattern
of the hammers is correct.
12.14 Removal Of The Mill Rotor
Never attempt to enter the bale chamber unless the
PTO has been disengaged, the engine has been
stopped, the key removed and the machine come to
rest. Whilst power is connected to the machine the red
beacon will remain flashing until the rotor comes to rest.
To remove the rotor it will be necessary to release the
tension on the drive belts to the rotor so that they can be
removed. To slacken the belt drive to the mill rotor, open
the side guard at the front on the left hand side of the
machine. Release the lower tensioning nut on the
tensioner and turn it up to the top of the thread. Using a
jack the raise the drive pulley mounting frame as far
upwards as possible.
To make sure the frame does not drop turn the upper
locking nut down the thread to take the weight of the
frame and remove the jack.
It should now be possible to remove the drive belt from
the rotor pulley.
Remove the bale restraint and inner bale chamber floor
frame by releasing the bolts retaining them.
Due to the weight of the bale restraint and inner bale
chamber floor it is not recommended to lift them
manually. Attach lifting equipment capable of lifting
100kg to the frame or bale chamber floor and remove
them from the bale chamber using a vehicle with suitable
lifting equipment.
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