Teagle Tomahawk 8080, Instruction Book / Parts List

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speeds of up to 30 rpm may be used to improve the
feed rate.
The hydraulic valve block requires a double acting spool
valve or a single acting valve with an unrestricted return.
Whichever is used, the hydraulic supply must be
independent of the 3-point linkage.
Where the machine is to be operated on a tractor with
closed centre hydraulics, a large volume of oil will be
passing through the valve and motor when the bed
chain is in use. This may require the tractor to be fitted
with a high flow “3
rd
line return kit” to protect the pump
from being damaged.
For details of the “3
rd
line return kit” and technical
guidance contact the relevant local tractor dealer.
The control lever mounting bracket should be fitted
inside the cab so that the levers are conveniently
situated for the operator. It should be remembered that
structural members of the cab must not be drilled or
welded.
FITTING THE MACHINE ONTO THE TRACTOR
Check that the lower links are at a height such that they
do not foul the PTO shaft when the tractor is turning. If
they are not used regularly, it is recommended that they
be removed.
Fit the slip clutch unit end of the PTO shaft to the
gearbox.
Fit the over-run clutch end of the PTO shaft to the
tractor. Gradually turn the tractor until maximum turning
lock is achieved checking that the PTO shaft does not
come to within 100 mm (4 inches) of bottoming. With the
shaft in its most extended position, there should not be
less than half of the original overlap between the sliding
members. If necessary, cut the PTO shaft to the correct
length.
Connect the hydraulic hoses into the spool valve
connections of the tractor. It is important that the supply
hose to the valve is connected to the pressure port of
the tractor, this hose is marked with an identifying tag.
Place the cable control unit in the cab and attach it to
the socket provided.
It is essential to get the relationship between the tractor
PTO shaft and the gearbox input shaft correct to give a
satisfactory PTO shaft life. The correct geometry exists
when the machine is horizontal.
If the machine is shredding whilst turning on a regular
basis it is recommended that a PTO shaft with a wide
angle, constant velocity joint be fitted.
OPERATION
The machine is fitted with a 2-speed gearbox. For
blockage free operation it is important that the
correct gearbox speed is selected for the material
being shredded and the chute through which it is being
discharged.
The gearbox has a neutral position, so make sure the
required gear has been properly selected. If operated in
neutral, material will enter the rotor housing. Make sure
all material is removed before restarting the rotor.
For shredding straw and other dry materials either rotor
speed may be used, for maximum throw distance the
handle should be moved towards the position marked by
the hare to give a 1:1 ratio.
For shredding silage and other wet materials it is
recommended that the slow rotor speed be used as long
throw distances are not usually required and wastage is
reduced. To set the slow rotor speed the gearbox handle
should be moved to the position marked by the tortoise
to give a 1.85:1 ratio. The machine may be used at
reduced PTO speeds and still deliver material to the
desired position.
Where a 1000 rpm PTO shaft is to be used, set the
slow rotor speed with the gearbox handle in the
position marked by the tortoise to give a 1.85:1 ratio.
To achieve maximum throw distance, operate the
tractor engine at PTO speed. For reduced throw
distances operate the tractor at reduced engine
speeds. Very slow rotor speeds may cause blockages.
Table 1. Gearbox & PTO settings - right hand chute.
Specific operating instructions are given below for each
chute type.
RIGHT HAND CHUTE
Adjust the position of the chute to deliver the material
being spread in the desired location.
SLOPING SWIVEL CHUTE
The swivel chute rotates through 270 degrees and can
be operated in any position.
To deliver silage close to the machine position the
chute so that material is delivered onto the feed
passage slide, the position of the slide can be adjusted
to deliver the material accurately. Alternatively the
position of the material can be controlled by the chute,
it may be necessary to rotate the chute fully delivering
material alongside the drawbar.
In transport, rotate the chute to the right hand side of
the machine aligning the indicators on the chute and
top housing. Fully lower the deflector to keep the width
and height of the machine to a minimum.
TWIN CHUTE
The twin chute machine can discharge through either
the standard chute or the swivel giraffe chute,
depending on operating requirements.
To select the desired chute operate the hydraulic ram to
move the chute selection segment to the correct position
for the chute to be used.
Material Distance
Spread
Gearbox
Speed
PTO Speed
Straw Maximum High 540
Straw Close High 300
Baled Silage Close Low 540
Clamp Silage Close Low 300
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