is filled with hydraulic oil using the sight gauge on the left
hand side of the tank.
Open the guard on the front left hand side of the machine
and check that the tank isolation valve is open allowing oil
to flow into the pump. The valve is open when the lever is
in line with the pipe.
8. PREPARATION OF THE TRACTOR
For good visibility down both sides of the machine when
working and reversing, the tractor should be fitted with
mirrors.
The minimum PTO power required to drive a Tomahawk
varies with model as shown in Table 1.
Table 1. Minimum tractor horsepower
However, the suitability of any particular tractor will
depend upon:
a)
The size and weight of the bale to be milled
b)
The moisture content on the material to be milled
c)
Bale chamber rotation speed
The machine is supplied with a PTO shaft with 1
3
/
8
”
diameter 6 spline yoke. The tractor should be capable of
operating at a PTO speed of 1000 rpm.
To raise and lower the conveyor the tractor will require 2
double acting hydraulic valves.
As the machine will be used in a static position the control
desk can be operated in either the preferred option
loading vehicle or the tractor powering the mill.
An auxiliary 3 pin socket electrical connection or cigarette
socket in the loading vehicle will be required to operate
the
control desk
. Should a power socket not be available
then an additional power supply cable with a 3 pin female
connector is available (part number EC2001) which can
be wired directly to the battery. The brown wire is to be
connected to the positive (+) battery terminal and the blue
wire to the negative terminal (-).
A 2nd auxiliary 3 pin socket electrical connection on the
tractor will be required to operate electrical components
on the
junction box (supplied with the machine)
. This
power supply should have a rating exceeding 15 amps.
Should the tractor power supply rating not be sufficient
then an additional power supply cable with a 3 pin female
connector is available (part number EC2001) which can
be wired directly to the battery. The brown wire is to be
connected to the positive (+) battery terminal and the blue
wire to the negative terminal (-).
8.1 Solenoid Valve, Control Desk & Junction Box
The control desk for the solenoid valve is supplied with a
suction cup attachment. This should be fitted in the cab
in a suitable position that is convenient for the operator
on a smooth, clean flat dust free surface.
If the power supply is connected incorrectly with the
wrong polarity the control desk and junction box will not
power up and the Bluetooth connection LED will not
illuminate.
If the fuse on the power lead to the machine should blow
it will be indicated by the red LED illuminating on the in
line fuse holder.
There is a 15 amp fuse fitted in the electric power supply
cable to the machine to protect against electrical
overload. Under no circumstances should the electrical
overload protection be bypassed or fuses with a rating
exceeding 15 amps be used.
Warranty will be
invalidated if this occurs.
9. FITTING THE MACHINE ONTO THE TRACTOR
9.1 Fitting The PTO Shaft
Hitch the machine to the tractor on the drawbar.
Proceed as follows:
9.1.1 Measure the distance between the annular groove
on the tractor output shaft to the annular groove on the
machine input shaft.
9.1.2 Measure approximately the distance between the
retaining balls of each sliding yoke at either end of the
PTO shaft with it fully collapsed.
9.1.3 If the distance between the grooves is over 150mm
(6”) more than the distance between the locking balls then
the PTO shaft will not require shortening.
If the distance is less than 150mm the PTO shaft will
need to be shortened. Calculate the difference between
the two measured values and add 150mm (6”). The
answer is the amount to be removed from each half of the
PTO shaft.
For example:
Distance measured between grooves 1100mm
Length of shaft between locking balls 1200mm
Length to reduce shaft by = (1200 - 1100 ) +150
Length to reduce shaft by = 100 +150
Length to reduce shaft by = 250 mm
9.1.4 Separate the 2 halves of the PTO shaft and remove
the amount calculated from each half guard and each half
tube. Deburr the drive tubes after cutting. Remove the
guards to facilitate cutting if required.
Hitch the machine drawbar to the tractor and turn off the
tractor engine. Fit the PTO shaft with the shear bolt end of
the PTO shaft attached to the machine.
Check that the lower links are at a height such that they
will not contact the PTO shaft, drawbar or hydraulic hoses
when the tractor is turning. If they are not used regularly,
it is recommended that they be removed.
Gradually turn the tractor until maximum turning lock is
achieved, and drive over undulating ground, checking that
the PTO shaft does not come to within 100 mm (4 inches)
of bottoming. If necessary, cut the PTO shaft to the
correct length. With the shaft in its most extended
position, there should not be less than half of the original
overlap between the sliding members.
It is essential to get the relationship between the tractor
PTO shaft and the machine input shaft correct to give a
satisfactory PTO shaft life. The correct geometry exists
when the machine is horizontal, see Figure 1.
7
Model
Minimum Tractor Power
C12
90 kW (120 Hp)
