EC Declaration of Conformity
conforming to EEC Directive 2006/42/EC
Teagle Machinery Ltd.
Blackwater
Truro
Cornwall
TR4 8HQ
United Kingdom
declares in sole responsibility that the
Tomahawk
C12
to which this certificate applies
conforms to the essential Health and Safety requirements of
EEC Directive 2006/42/EC & 2004/108/EC.
To effect correct application of the essential
Health and Safety requirements stated in
the EEC Directives, the following harmonised standards were consulted:
BS EN ISO 12100:2010
BS EN ISO 4254-1:2015
Signed:
Duncan Wilson (Engineering Director)
Dated: 1
st
June, 2016
Person authorised to compile Technical File
Duncan Wilson,
Teagle Machinery
Blackwater, Truro
Cornwall, TR4 8HQ
United Kingdom
Machine Serial No. . . . . . . . . .
SAFETY FIRST!
1. READ THE INSTRUCTION BOOK THOROUGHLY
before attempting to operate or carry out any
maintenance on the machine. If you do not
understand any part of this manual, ask your dealer
for assistance.
2. ALWAYS CARRY OUT SAFE
MAINTENANCE. Never clean, adjust or
maintain the machine until the engine has been
stopped, the machine come to rest, the PTO
disengaged and the key removed.
3. NEVER WORK UNDER A MACHINE RAISED
ON THE 3-POINT LINKAGE unless it is
securely supported.
4. NEVER OPERATE THE MACHINE WITH ANY
PARTS OR GUARDS MISSING. Check that all
guards including the PTO shaft guards are in good
condition and in place before operating the machine.
5 OPERATE SAFELY. Before starting work, check
that there are no persons or animals in the
immediate vicinity of the machine or tractor. Always
maintain full control of the tractor and machine.
Ensure that you know how to stop the tractor and
machine quickly in case of emergency.
6. SECURE THE PTO GUARD BY MEANS OF
CHECK CHAINS to suitable points on the tractor
and machine to prevent the outer plastic shield from
rotating.
7. NEVER STAND BETWEEN THE MACHINE AND
THE TRACTOR WHEELS.
8. DO NOT WEAR LOOSE OR RAGGED CLOTHING
9. BEWARE OF DUST. Under dusty conditions, keep
the cab windows and doors closed. The use of a
dust mask conforming to EN149 is strongly
recommended.
10. BEWARE OF HIGH NOISE LEVELS. Some
tractor/implement combinations give noise
levels in excess of 90dB at the operator's ear.
Under such circumstances, ear defenders
should be worn. Keep cab windows and doors
closed to reduce noise level.
Throughout this handbook, the term `tractor' is used to
refer to the power source used to drive the machine. It
does not necessarily refer to a conventional agricultural
tractor.
HEALTH AND SAFETY AT WORK
Our equipment is designed so as to conform with
current Health & Safety Regulations and therefore
poses no significant hazard to health when properly
used. Nevertheless, in the interests of all concerned, it
is essential that equipment of our manufacture is used
in accordance with the instructions that are supplied or
are available from our Technical Staff.
Legislation requires that all operators are instructed in
the safe operation, cleaning and maintenance of
equipment and machines. This handbook forms part of
that instruction and it must be read and understood
before fitting the machine onto the tractor or attempting
to use it.
Your supplier is responsible for carrying out any
necessary pre-delivery inspection, fitting the machine
onto the tractor and test running. The supplier must
also give instruction in the safe use, maintenance and
adjustment of the machine.
In the interests of safety, please ensure that the
instructions referred to above are brought to the
attention of all your employees who are to use the
equipment. We recommend that the use of this
equipment is restricted to capable trained operatives.
Persons under the age of sixteen should not operate the
machine and should be kept away from where it is being
used.
WARRANTY
The standard warranty is against faulty materials and
workmanship. Components supplied as part of the original
machine, but manufactured by another company, e.g. PTO
shafts, wheels etc., are subject to the original
manufacturer's conditions and warranty.
Where repairs are carried out under warranty:-
a) Claims for the fitting of non original parts will not be
considered unless prior agreement has been obtained.
b) The repairer must be advised that the work is to be the
subject of a warranty claim beforehand.
c) Any claim must be submitted within four weeks of the
repair.
d) The damaged parts must be retained for inspection and
returned carriage paid if required.
The right to withdraw warranty is reserved if:a) Non-original parts are fitted.
b) The machine has been abused, badly maintained or
used for purposes other than that for which it was
designed.
INDEX
INSTRUCTIONS Page
Lubrication schedule 2
1 Specification 3
2 Explanation of pictograms 4
3 Safety 6
4 Left and right hand 6
5 Use of the Tomahawk 6
6 Use on the public highway 6
7 Preparation of the machine 6
8 Preparation of the tractor 7
9 Fitting the machine onto the tractor 7
10 Operating instructions - loading 9
10 Operating instructions - discharge 9
11 Machine protective devices 10
12 Maintenance 10
13 Optional extras 15
14 Machine storage 15
15 Disposal 16
FAULT FINDING CHART
Part 1 16
Part 2 17
Part 3 18
ROTOR HAMMER LAYOUT 19
Ref. Description
1 Front layshaft bearing
2 Rear layshaft bearing
3 Front mill rotor bearing
4 Rear mill rotor bearing
5 Driveshaft bearing
Ref. Description
6 Conveyor drive roller bearings
7 Conveyor driven roller bearings
8 Bale chamber drive pivot
9 Bale chamber drive sprocket lower
bearing
10 Bale chamber drive sprocket upper
bearing
11 Bale chamber tensioner pivot
12 Bale chamber tensioner boss
13 PTO shaft cross journals, guard
bearings & sliding members.
14 Bale chamber support rollers
15 Conveyor belt support rollers
For more detailed information
see maintenance section
2
Notes: Use good quality semi-solid
grease for all procedures detailed above.
50 Hours
20 Hours
Lubrication Schedule - Tomahawk C12
Ref. Description
16 Ring hitch – as required
17 Wheel bearings - annually
Other
5
1-3
4
7-11
16
14
13
13
6
12
15
17
14
1.1 C12 SPECIFICATIONS
3
Specifications
Overall width
2.39 m
Overall height - (conveyor in working position)
4.30m
Overall height - (conveyor in transport position)
3.20m (3.7 with deflector)
Overall length (conveyor in working position) 8.74m (without deflector)
Overall length (conveyor in transport position) 5.97m
Conveyor delivery height 4.20m
Maximum rectangular bale size (part of the bale to be loaded at one time) 1.3m x 1.2m x 2.5m
Maximum round bale size 1.8m
Tyre size
385/55 R22.5
Wheel track 2.0 m
Wheel load rating 4,500 Kg (per wheel)
Wheel speed rating 25mph (40km/h)
Weight 4,200 Kg
Volume of bale chamber 4.5 m3
Maximum hydraulic oil pressure 220 bar (3190 psi)
Minimum hydraulic oil flow
30 litres/min
(6 gallons/min)
Maximum drawbar load 790 Kg
Minimum tractor size 90kW (120hp)
Maximum tractor size 149kW (200hp)
PTO Speed 1000 rpm
Sound power level 85 dbA
Hydraulic oil specification ISO HV46
Hydraulic oil tank capacity
150 litres
(33 gallons)
4
Please read instruction book
before using the machine
Tighten wheel nuts to setting in operators handbook
Direction of rotation and
speed of PTO input shaft
2. EXPLANATION OF PICTOGRAMS
Do not allow anyone to ride on the machine
Beware of the moving conveyor - Keep Clear
Tractor Control Desk Panel
Maximum hydraulic circuit pressure
Safety decals fitted to the machine provide important and useful information that will help make sure the machine is
operated safely. It is recommended that decals are kept clean so that the information they display remains visible to
those operating the machine. Decals should be cleaned with soap and water, chemical cleaners should be avoided.
Replacement decals are available from Teagle Machinery Ltd.
5
Beware crushing hazard
keep clear
Bale Chamber Alignment
Arrow DL1052 (red) & DL1442 (yellow)
Grease Decal Every 20 Hrs
Grease Decal Every 50 Hrs
Grease Labelling
Grease Labelling
Grease Labelling
Jack Information Label
Bluetooth Symbol
3. SAFETY
In addition to the standard safety guidelines listed at the
beginning of this handbook, the following special safety
items apply to the Tomahawk.
3.1 The machine shall be operated by one person
only.
3.2 In the event of a blockage, first, disengage the
PTO, stop the engine, remove the key, and wait
for the rotor and conveyor to come to rest before
attempting to clear it.
3.3 NEVER enter the bale chamber unless the
PTO has been disengaged, the engine has
been stopped with the key removed from the
ignition, and the machine has come to rest. Whilst
power is connected to the machine the red beacon
will remain flashing until the rotor comes to rest.
3.4 NEVER insert anything inside the sieve
housing or bale chamber while the machine is
running.
3.5 DANGER. When entering or leaving the bale
chamber take care.
3.6 Beware of overhead power lines when the
conveyor is fully raised and during folding for
transport. Electricity can arc (jump gaps) in
certain circumstances if the conveyor gets close
enough – you do not need to contact an overhead
power line to receive an electric shock.
Risks can be reduced if the folding and operation of
the conveyor is not carried out within a horizontal
distance of at least 10m from an overhead power
line.
3.7 Do not climb onto the top edges of the bale chamber
whilst the machine is in use.
3.8 Do not allow anyone to ride on the machine, tractor
linkage or drawbar.
3.9 Do not allow persons or animals to stand in front of
the conveyor discharge whilst the machine is
running.
3.10 Do not operate the conveyor if any person or animal
is standing in the loading area behind the machine,
always ensure good rearward visibility when lowering
the conveyor.
3.11 Never put your hand over a hydraulic leak. Oil under
pressure may enter the blood stream.
3.12 The milling of dusty or mouldy material can create
dust which may have adverse health effects.
Operator exposure to such conditions should be
avoided where possible. When circumstances
prevent this, either use a tractor with a suitable
forced air cab filtration system or an adequate
respirator. Respirators must comply with the
relevant Standard and be approved by the Safety
Inspectorate. Disposable filtering face piece
respirators to EN149 or half mask respirators to
EN140 fitted with filters to EN 143 are likely to be
adequate.
3.13 Before disconnecting the hydraulic hoses always
make sure the conveyor is fully folded over the bale
chamber to avoid residual pressure in the hoses.
3.14 When changing a wheel make sure that the machine
is on firm level ground or hard standing, a jack with a
lifting capacity of 3 tonnes is used, the jack is applied
to the jacking point identified on the machine and the
axle is securely propped on an axle stand before
removing the wheel.
3.15 Always fit the correct size tyre onto the rims when
fitting replacements.
3.16 Care must be taken when handling large bales, as
they have sufficient weight and density to cause
serious injury. Large bales should be handled with
appropriate machinery and loaded directly into the
Tomahawk bale chamber. Do not manually load
bales from a stack above the machine, so as to
prevent the risks of falling into the machine and
collapse of the stack of bales.
3.17 Exercise caution after prolonged intensive use of the
machine, as the oil temperature will have risen
causing hydraulic fittings and hoses to be hot.
4. LEFT AND RIGHT HAND
In this handbook and parts list, the terms Left and Right
Hand apply to the machine when standing behind the
machine looking towards the rear of the tractor.
5. USE OF THE TOMAHAWK
The Tomahawk is designed to mill dry baled materials
such as straw to a variety off different lengths depending
on the size of screen fitted.
Processing materials with a moisture content greater than
20% is not recommended.
Its use for shredding other materials is not recommended
without first seeking further advice from Teagle Machinery
Ltd.
6. USE ON THE PUBLIC HIGHWAY
If the machine is to be transported along the public
highway (any road where the public have access)
behind the tractor, it is important that lights fitted to
the machine are operational to comply with local road
traffic legislation, as the machine obscures the tractor rear
light units.
The Tomahawk is classed as a trailed implement and has
been supplied with brakes that meet the requirements of
United Kingdom legislation provided the maximum speed
limit of 25 mph is observed. For all other countries local
regulations must be observed.
Please contact the relevant government department to
ensure local regulations are complied with.
Failure to comply with road traffic legislation may lead to
prosecution by local law enforcement agencies and could
also result in a road traffic accident.
7. PREPARATION OF THE MACHINE
Remove the PTO shaft and any other loose items from
the body of the machine.
With the machine on a level surface check that the oil tank
6
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 13/8”
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)
Figure 1. Correct PTO geometry.
If the machine is milling with the tractor at an angle to the
machine on a regular basis it is recommended that a PTO
shaft with a wide angle, constant velocity joint be fitted.
9.2 Connecting the hydraulic supply
Connect the hydraulic supply and return hoses for the
conveyor rams into the spool valve connections of the
tractor.
9.3 Connecting The Control & Junction Box.
Place the control desk in the cab and attach it in a
convenient location using the suction cup. Plug the control
desk into the power supply.
Route the machine cable to the tractor auxiliary power
socket ensuring it is kept away from the rear wheel and
any pinch points between the PTO shaft and link arms.
Where possible, route into the cab through cable entry
points on the tractor, allowing the rear window to be kept
closed during use.
Ensure the functions of the control desk are completely
understood before proceeding to use the machine. In
particular the bale chamber is actuated in the forward
direction by pushing the milling direction button and
stopped by pressing the button again. Reverse of the bale
chamber can only be actuated by holding the reverse
button.
The control desk will not turn on until the Bluetooth
connection with the machine has been established, the
LED stops flashing and is illuminated. To establish this
connection both the control desk and junction box must
be connected to a power source.
Should the control desk fail to connect to the machine,
then press the “ON” and “OFF” buttons together for 2
seconds. This will make the control desk search for the
Bluetooth signal from the Tomahawk. Note: Make sure
the ‘power on’ is illuminated to run the conveyor. Make
sure the conveyor is straight & lowered before running.
9.4 Programming Electronic Controls
Before adjusting the settings for the rotational
speed of the bale chamber it will be necessary to
unfold the conveyor and lower it to a working
position.
The electronic controls are programmable via the control
desk to optimise the performance of the machine.
The following instructions will allow you to programme
the stop position (0) and high speed position (10) of the
bale chamber speed dial. This process will allow
maximum bale chamber rotation speed without
compromising the other services the valve block can
provide.
Figure 2. Control desk.
To perform this operation the following steps must be
followed exactly.
a) Turn on the tractor and engage PTO shaft drive
which will start the hydraulic system.
b) Set the tractor engine revs to a achieve a 1000
rpm PTO speed.
c) With the control desk off, turn the bale chamber
rotation speed dial down to 0.5.
d) The following buttons must then be pressed &
held down in this order;
1 Bale chamber milling direction.
2 Automatic bale chamber speed
control.
3 On.
e) Hold the sequence of buttons for 8 seconds until
both the ‘bale chamber milling direction’ and ‘on’
LED’s illuminate.
f) Release buttons and the LED’s should flash
alternately.
g) Using the automatic bale chamber speed
control button to slow down,
and the manual bale chamber speed control
button to speed up,
h) slow the bale chamber down to the point where it
just stops.
i) Press the ‘off’ button to save the slow speed.
You have now programmed the electronic controls for
the minimum bale chamber rotation speed.
To programme the electronic controls for the maximum
speed repeat the same process again BUT Step c
8
Power on
Manual bale
chamber
speed
control
Automatic
bale chamber speed
control
Bale chamber
milling direction
Tomahawk
Layshaft
Both Angles
Similar
Tractor
should have the speed dial set to 10 and in Step g you
should increase the bale chamber speed to the maximum
desired.
Important, the oil flow for the conveyor motor is
prioritised over the oil flow to the motor rotating the bale
chamber. The speed of the conveyor should remain
constant if oil flow to the valve is reduced, as the pump
supplying the oil to the valve is driven from the milling
rotor driveline it is important the calibration is undertaken
at full working PTO speed. The speed of the conveyor
can be changed using the thumb screw on the valve
block.
10. OPERATING INSTRUCTIONS
10.1 Screen selection
The machine is supplied with 2 half screens, different
screen sizes are available.
The size of the milled material is determined by the hole
size in the screen. It is possible to fit any combination of
screen hole size to the machine.
If a guaranteed maximum chop size is required then fitting
2 half screens with the same size holes is recommended.
If fitting half screens with 2 different hole sizes then the
smaller screen should be fitted to the right hand side of the
screen carrier frame, this screen will do the majority of the
milling. Fitting 2 screens of different sizes will allow a small
proportion of longer material to be milled. However this
may reduce milling time and power consumption.
Round hole screen sizes are available in the following
sizes 100mm, 75mm, 60mm, 40mm, 30mm, 20mm.
Table 2 Screen applications
Screen replacement is detailed in paragraph 12.11 in the
maintenance section of these instructions.
10.1 General
Before attempting to start and load the machine unfold the
conveyor from its transport position and move the machine
into its working position setting the discharge height of the
conveyor.
10.2 Starting the machine
The control desk supplied with the machine communicates
wirelessly with the electronic circuits on the machine. This
means it can be installed in the cab of either the loading
vehicle or the tractor powering the mill. Before starting the
machine, particularly if there is material in the bale
chamber, Ensure that the Bluetooth connection to the
control desk has been established and the control desk is
turned on. This is important so that the conveyor starts
when the mill rotor starts rotating avoiding a blockage.
Select 1000 rpm PTO speed and engage the PTO shaft.
Increase the engine speed until PTO is running at
1000rpm.
Once running the rotation of the bale chamber can be
started and the rotational speed set.
10.3 Loading Machine
The strings or net should be removed from the bale before
it is loaded into the machine. The Tomahawk will mill some
string but some will tend to wrap around the rotor. Putting
twine or netwrap through the machine is not recommended
particularly where the milled material is being fed to
animals.
It is recommended that string or netwrap is removed from
the bales on the ground and then the material to be milled
loaded into the machine using a bucket or grab on the
loading vehicle.
The bale or part bale can be loaded into the bale chamber
with it rotating or by stopping the rotation of the drum, this
is easily achieved if the control desk is mounted in the cab
of the loading vehicle.
When removing string or netwrap from bales never
climb into 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.
Do not stand above the machine on a stack of bales
or in a barn to load the machine manually.
10.5 General Discharging Instructions
The speed of rotation of the bale chamber will control the
feed rate of the machine, higher rotational speeds will
result in higher processing speeds and consequently
higher power requirements. The speed of the bale
chamber is controlled by setting the speed dial on the
control desk.
When milling large rectangular bales maximum throughput
is achieved if the bale chamber is kept no less than half full
of material. The best results are achieved if part bales are
loaded into the bale chamber.
Large round bales can be placed in the tub on end or on
their side. To work out which is the best method for the
material being chopped try bales in each orientation.
Avoid dropping a complete round bale into the bale
chamber from a high level to prevent shock loading
to the mill rotor and driveline.
Ease the bale over the edge of the bale chamber and
lower into the tub as gently as possible.
The evenness of feed and power consumption will vary
with the condition of the bale. In general, damp or caked
straw materials will require a higher power input than dry
brittle materials. Bales with a moisture content greater
than 20% will result in higher power requirements and take
longer to process & could result in blockages.
The speed of the mill rotor is monitored by the electronics,
if the mill rotor requires more power than the tractor driving
the machine is able to deliver then, as the rotor speed
drops it will reduce or stop the rotation of the bale chamber
automatically. Once the mill rotor returns to the operating
speed then the rotation of the drum will restart and
gradually return to the rotation speed set by the control
desk.
The sensitivity of the automatic bale chamber speed
control can be altered using the three modes on the
control desk. This allows the power requirement of the
machine to be varied according to the power available
from the tractor.
9
Use of milled material Typical screen size
Long cattle feed 60, 75 &100mm
Short cattle feed 30, 40 & 60mm
Cubicle bedding 20mm
The mode is switched by repeatedly pressing the
automatic bale chamber control button.
However the optimum setting will vary depending on
material moisture content and density.
As the milled material builds up beneath the conveyor
discharge point it may be necessary to stop milling and
reposition the machine if the material can not be moved
away by the loading vehicle.
When it is necessary to stop milling part way
through a bale, always stop the bale chamber
rotation and put it in reverse for a few seconds
before stopping the mill rotor. This allows the material in
the area around the mill rotor to be removed by the
conveyor. Failure to do this may result in a blockage
when the machine is re-started.
To stop the machine without the control desk press the
auxiliary stop button on the side of the machine, this will
first stop the bale chamber rotation. After a short delay to
make sure the material is removed from the mill rotor
housing the conveyor will stop. The mill rotor will then
have to be stopped by disengaging the PTO drive in the
tractor driving the machine.
Occasionally materials may lodge against the side of the
bale chamber and not feed down into the mill. If this
occurs reverse the rotation of the bale chamber for 1 to 2
turns to dislodge the material and restart milling.
10.6 Blockage Removal
Never begin to unblock a machine until the PTO has
been disengaged, the engine stopped with the key
removed from the ignition, and the machine has
come to rest. Whilst power is connected to the machine
the red beacon will remain flashing until the rotor comes
to rest.
Should the mill rotor and housing become blocked, first
remove any material on the conveyor below the screen.
A short reverse rotation of the bale chamber is
recommended before attempting to restart the mill rotor.
Further access may be gained by removing the screen to
gain access to the rotor or by entering the bale chamber
to clear material from around the mill rotor.
10.7 Folding for Transport
Before folding the conveyor for transport ensure the
bale chamber is positioned so that the rubber stops
on the conveyor sit on the support pads on the bale
chamber. Arrows on the front of the bale chamber and
chain drive guard indicate this position.
11.0 MACHINE PROTECTION DEVICES
IMPORTANT: The machine is fitted with a shear bolt on
the PTO shaft connecting the tractor to the machine. If
the PTO shaft is engaged harshly or after a blockage, the
shear bolt may fail and require replacement. See
paragraph 12.7 in the maintenance section.
Shearbolt Grade 10.9 Bolt M12 x 55mm
12.0 MAINTENANCE
12.1 Safety
Never open the guards surrounding the driveline or
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.
The mill rotor will take approximately 2 minutes to
come to rest from operating speed.
12.2 Lubrication and regular maintenance.
A regular visual inspection of the mill for parts showing
any excessive wear is recommended. Parts requiring
particular attention are the hammers/blades for wear and
elongation of the pivot hole. Also check the pivot rod
retaining pins are in place and there is no excessive wear
on the rods. The holes for the hammer pivot rods in the
discs of the mill rotor should be inspected for elongation
and wear.
Good quality semi-solid grease should be applied to the
grease points as shown on the relevant lubrication chart
on page 2.
The frequencies stated are hours of use.
Other maintenance points are shown in table 3 below
Table 3 Quick reference maintenance table
12.3 Wheel Changing
Serious accidents, including fatalities, have been
caused by unsafe practices during wheel/tyre
changing and when inflating tyres.
When using jacks to lift or support the machine:
a) Use a jack capable of lifting 3 Tonnes for lifting the
machine. The jack should have a minimum height
of 470 mm and be able to extend to a length of
520 mm;
b) Use the jacking point identified in the figure 3;
c) Position axle stands to give additional support;
d) Apply the handbrake to prevent movement.
10
Greasing See separate chart on page 2
Hydraulic oil Check oil level daily
Oil Cooler
Check / clean cooler screen
fins daily
Return line filter Check gauge weekly
Bale chamber
chain tension
After first day then
weekly depending on use
Mill rotor belt
tension
Weekly
Hydraulic pump
drive belt tension
Monthly, depending on use
Tyre pressures &
wheel nuts
Weekly
Hydraulic oil Analysis of oil condition
annually
3 120 - 150 (160-200)
2 104 - 120 (140 -160)
1 90 - 104 (120 -140)
Mode Tractor power kW (hp)
e) Where possible carry out the work on firm level
ground
Tyre/wheel repair and replacement should only be carried
out by competent staff. If in doubt seek help from
professional service personnel.
Figure 3. Jacking point.
If it is necessary to remove a wheel, place a jack
underneath the axle beam, loosen the wheel nuts and
raise the machine. Place an axle stand underneath
the machine, remove wheel nuts completely and remove
the wheel. Refit the wheel and tighten the wheel nuts to
the torque in 12.4.
12.4 Wheel Studs
Before using a new machine and daily during use, check
the wheel nuts are tight. The recommended torque for the
8 stud wheel is 400Nm (320lb.ft).
If the nuts are allowed to work loose, it may be
impossible to keep them tight and new nuts and studs
will be required. In extreme cases, damage to the
wheel rims and hubs may result.
12.5 Tyre Pressures
Check tyre pressures regularly, inflate to the pressure
shown in the following table. Incorrect inflation can
be dangerous.
Table 4. Tyre pressures.
When inflating tyres don’t use ‘unrestricted’ airlines
(without a gauge or pressure control device) or valve
connectors that require the operator to hold them in place
when inflating tyres. Tyres can explode if they are not
inflated safely. Use airline hoses long enough to allow the
operator to stay outside the likely explosion path during
inflation. Wheel cages and similar devices can help
reduce the risk of injury.
If in doubt seek help from professional service personnel.
12.6 Service Brake Adjustment
It is imperative that the brakes are adjusted correctly to
meet the requirements of the braking regulations. As the
brake shoes wear, it will be necessary to adjust the
position of the lever arms to ensure that the actuators do
not reach the end of their travel and fail to apply the
brakes. To do this, safely jack up one side of the axle until
the wheel is clear of the ground. Turn the adjusting nut on
the brake lever clockwise just enough to prevent the wheel
from being turned by hand. Then slacken the adjusting nut
anti-clockwise by three clicks. Safely lower the machine to
the ground and repeat for the other side.
12.7 PTO Shaft Shear Bolt
Never attempt to replace the shear bolt unless the
PTO has been disengaged, the engine has been
stopped, the key removed and the machine come to
rest.
To replace the shear bolt, open the upper and lower
counter cone covers to gain access to the shear hub.
Replace the shear bolt with a shear bolt of the correct
grade.
Shearbolt: Grade 10.9 Bolt Size M12 x 55mm
Under no circumstances should a higher grade or
larger diameter shear bolt be fitted. Should this
happen, damage to the machine could occur and
warranty will be invalidated.
12.8 Drive Belts
Never attempt to tension the drive belts unless the PTO
has been disengaged, the engine has been stopped, the
key removed and the machine come to rest.
Figure 4. Belt tension - Pump drive.
12.8.1 Hydraulic pump drive
To tension the belts driving the hydraulic pump.
Remove the front lguard below the oil tank on the left hand
side of the machine.
Release the inner clamp nut on the tensioner.
Using the tensioning nut pull the pump mounting frame
until the belt has 15mm to 20mm movement midway
between the pulleys and tighten the locking nut. see Figure
4.
12.8.2 Mill rotor drive
To tension the belt drive to the mill rotor. Open the right
hand side guard of the machine. Release the upper &
lower clamp nut on the tensioner. Using the tensioning nut
provided jack the drive pulley mounting frame downwards
until the belts have 10 to 15mm movement midway
between the pulleys and tighten the locking nuts. see
Figure 5.
11
Tyre Size Tomahawk C12
Pressure bar (psi)
385/55 R22.5 5.8 ( 84 )
Figure 5. Belt tension - Rotor Drive.
12.9 Bale chamber drive chain tensioning
Never attempt to tension the drive chain 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.
The hydraulic pump is driven from the drive to the
mill rotor and means that there is a risk that it can
move unexpectedly until the mill rotor has come to
rest.
The chain drive to the bale chamber can be tensioned
without removing any guards. To tension the chain driving
the bale chamber.
Release the rear clamp nut on the tensioner. Using the
tensioning nut provided, jack the drive sprocket mounting
frame until the tensioning spring has a compressed length
of 110-130mm, see Figure 6.
Figure 6. Bale Chamber Drive Chain tension.
Figure 7. Chain Tension - Bale Chamber Motor: Remove
top guard, tension chain & re-attach guards etc.
12.10 Bale chamber mounting adjustment
Never attempt to adjust the bale chamber support
rollers 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.
The hydraulic pump is driven from the drive to the
mill rotor and means that there is a risk that it can
move unexpectedly until the mill rotor has come to
rest.
To adjust the support rollers open the guards covering the
rollers. Release the 4 x m12 bolts holding the roller
brackets to the frame. Adjust the brackets as required.
Lifting equipment and spacers maybe needed to increase
the height of the drum rollers. Check for alignment on all 4
pairs of rollers and make sure the tub is spinning
smoothly. Tighten bolts and replace guards.
12.11 Screen replacement.
Never attempt to remove the screen 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 replace the screen it will be necessary to move the
machine to a location where the conveyor can be
extended and fully lowered to allow the screen to be
changed. Once the machine has come to rest remove
the 2 bolts holding the screen frame in place. Slide the
screen support frame rearwards until it can be lowered
onto the support platform provided on top to the conveyor.
Release the 4 bolts retaining the half screen to be
replaced or turned, remove the screen and either turn the
screen to make use of the fresh cutting edge or replace
the screen with a screen with the desired hole size.
Once the screen halves have been secured, slide the
screen support frame back into the machine and secure it
in position.
12.12 Restraint frame replacement.
Never attempt to enter the bale chamber to replace
the restraint frame 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 replace the hammers, it will be necessary to remove
the restraint beam, release the 8 bolts retaining it to the
support platform in side the bale chamber.
Due to the weight of the frame it is not
recommended to lift the frame manually. Attach
lifting equipment capable of lifting 100 Kg to the frame
and remove the restraint frame from the bale chamber
using a vehicle with suitable lifting equipment.
Lift the replacement frame into the bale chamber. Position
over the rotor and secure with the 8 bolts.
12.13 Hammers / blades
Hammers and screen cutting edges are critical to the
performance of the Tomahawk. Worn hammers and
screen edges will result in reduced throughput and higher
power requirements.
12
Deflection
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.
13
Remove the bolts retaining the rotor mounting bearings to
the frame at the front and rear of the rotor.
Due to the weight of the mill rotor assembled with the
bearings and pulley lifting equipment capable of
lifting 500kg will be required. Attach the lifting
equipment to the rotor and remove it from the bale
chamber using a vehicle with suitable lifting equipment
capable of lifting the rotor over the height of the bale
chamber (see specifications page for height of bale
chamber).
Refitting the rotor is the reverse of the above.
12.15 Conveyor Belt
Never attempt to maintain or adjust the conveyor belt
rollers 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.
The hydraulic pump is driven from the drive to the
mill rotor and means that there is a risk that it can
move unexpectedly until the mill rotor has come to
rest.
12.15.1 Conveyor Belt Tension
The discharge conveyor drive roller position is adjustable
to allow for belt stretch. If the belt slows down or stops
during operation the belt will need tensioning until it stops
slipping. It is normal for the belt to sag on the lower side,
the tension should be judged on if it slips not on the
amount of sag.
Overtightening of the belt should be avoided, it may cause
damage to the belt or cause pulsation in the hydraulic
circuit.
To tension the conveyor belt unfold and lower the
conveyor belt fully. Release the locking bolts holding the
bearing tension plates. Adjust both bearing tension bolts
by the same amount until the belt stops slipping. Align belt
with the slots, on the cover but making sure it doesn’t hit
the conveyor bar.
Tighten the clamping bolts, lift the conveyor to a
working height, start the machine slowly and run the
conveyor checking that the belt is running centrally in it’s
frame avoiding damage to the belt from rubbing on the
frame. If it is not running centrally stop the conveyor and
the machine and wait until the mill rotor comes to rest.
Adjust the position of 1 tensioner, retighten and test the
operation of the conveyor again.
It may be necessary to adjust the front roller to ensure the
belt is running centrally. This can be achieved by
releasing the bearing mounting bolts on one side of the
conveyor and adjusting the position of the bearing.
12.15.2 Conveyor Belt Replacement
Should it be necessary to remove or replace the conveyor
belt extend and fully lower the conveyor. Stop the
conveyor belt with the joint on the upper surface just in
front of the tension roller. Stop the machine and wait until
the mill rotor comes to rest. Release the locking bolts
holding the bearing tension plates and take the tension
roller to it’s fully slack position. Lift the belt and remove
the pin from the joint. Pull the belt from the conveyor
frame.
Reassembly is the reverse of the above procedure.
12.16 Hydraulic Circuit
Never attempt to maintain the hydraulic circuit
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.
The hydraulic pump is driven from the drive to the
mill rotor and means that the pump will continue to
operate until the machine comes to rest.
If the machine has been operating then the hydraulic oil
and components will be hot, allow time for the system to
cool before working on the hydraulic circuit.
Before working on the hydraulic circuits to operate the
rams that position the conveyor make sure that the
conveyor is unfolded and fully lowered to avoid there
being oil under pressure in the circuit.
12.16.1 Hydraulic Oil Reservoir
All machines are delivered from the factory filled with
hydraulic oil. With the machine on level ground and
attached to tractor the oil level in the reservoir should be
in between the minimum and maximum marks on the
sight gauge on the left hand side of the tank.
Only a good quality ISO HV46 grade hydraulic oil should
be used. Total capacity of the tank is approximately 150
litres (33 gallons).
When filling the tank make sure the strainer inside the
filler cap is in place.
12.16.1 Hydraulic Oil Change
The most accurate way of determining when the oil needs
replacing is to undertake oil analysis to check if the base
oil has degraded or if the additive package has become
depleted. As a guide a 1000 hour oil change interval
would be recommended.
To drain the tank remove the drain plug at the base of
the tank and collect the oil in suitable containers. Oil
may drain faster if the filler cap is loosened.
Waste oil is considered to be a hazardous substance and
as such should be stored and disposed of in compliance
with local legislation.
Whilst the tank is empty the condition of the suction filter
should be checked by removing the filler cap assembly
and visually inspecting it. Should it need to be replaced it
can be removed by reaching down into the tank and
unscrewing it. Screw the new filter into the tank.
Replace the drain plug and refill the tank.
12.16.2 Return Filter
The return line filter should be changed when the gauge
on top of the filter housing indicates it needs replacing.
Failure to replace the element at the appropriate time will
result in the filter bypass opening when the back pressure
reaches 1.75 bar. At this point filtration will no longer be
taking place exposing all elements of the system to
damage. The filter should be replaced when the indicator
on the gauge fitted to the top cover reads 1.4 bar (the top
of the green section on the gauge).
To replace the element remove the 3 screws holding the
top cover onto the filter body, there is a spring underneath
14
the cover holding the filter in place. Remove the cover and
withdraw the filter element. Fit the new filter element into
the filter housing making sure the “O” ring around the top
cover is in place. Replace the cover and tighten the
screws.
12.17 Hydraulic Valve & Electronic Controls
If problems are experienced with either the hydraulic
system or electric controls, please contact Teagle
Machinery Ltd. for advice as a separate manual is
available to cover troubleshooting and repair. Alternatively
manuals can be viewed on the Teagle Machinery website
by joining the owners club and registering your machine
serial number.
Scan the QR code to take you to the owners
club registration page or go onto the website
www.teagle.co.uk and select the owners club.
12.17.1 Electric Controls For Solenoid Valve
Before maintaining any part of the electronic
controls and wires, disconnect the 12v supply.
Failure to do so may result in damage to the
electronic circuit.
It is recommended that the controls are repaired by a
competent person. Please contact Teagle Machinery Ltd
if repairs are required.
The electric controls require no maintenance and it is
imperative that no part of the system is ever sprayed
with a moisture repelling agent such as WD40.
When the machine is not being used it is recommended
that the control desk is stored safely away from the
machine in a dry location or under the cover provided on
the front of the machine. The plug on the end of the
machine cable should be kept stored in the bracket
provided to keep it clean and safe from damage.
12.18 PTO Shaft
Access to the grease nipples for the PTO shaft joints is via
a hole in the cone.
13 OPTIONAL EXTRAS
13.1 Screen Sizes
There are 6 different screen sizes available 100, 75,
60,40,30,20mm for milling straw. For information regarding
milling grain please contact the head office on +44(0)1872
560 293.
13.2 Screen Sizes
There is a optional covered bale restraint available (part
no. CM2082), if you are processing resistant, damp
materials.
13.3 Drawbar Jack
Where the machine is fitted with a drawbar jack, adjust the
height of the drawbar to match the height of the hitch point
on the tractor. Reverse the tractor and attach the drawbar.
Lower the machine until the weight is fully transferred to
the tractor. Remove the pin retaining the jack to the
drawbar and transfer it onto the transport position across
the front of the chassis.
14.0 MACHINE STORAGE
When the machine is not being used it is recommended
that the control desk be stored safely away from the
machine in a dry location or under the cover provided on
the front of the machine. The electrical connections
together with hydraulic hoses should be stored in the
positions provided on the front of the machine. If the
machine is to be laid up for any great length of time it
should be thoroughly cleaned down and any bright
surfaces treated with paint as opposed to a rust
preventative since the machine is used for dispensing
foodstuffs. All lubrication points should be attended to
ready for subsequent reuse.
15.0 DISPOSAL
At the end of the machine’s working life, the method of
disposal must be within the legislation laid down by the
local authority or the National Environment Agency.
The machine is composed of ferrous materials, synthetic
paints and rubber compounds.
Waste oil from the hydraulic system is considered to be a
hazardous substance and as such should be drained from
the machine, stored and disposed of in compliance with
local legislation.
15
16
TOMAHAWK C12 FAULT FINDING CHART – PART 1
Symptom Fault Possible Solutions
High power
Consumption.
Bale fed too quickly into the rotor or worn
hammers.
Bale chamber speed too high
Rotor housing / Screen blocked
Reduce bale chamber speed.
Remove blockage
Belts slipping on
rotor drive.
Incorrect belt tension Tension the rotor drive belts according to section
12.8.2
Rotor won't start. Blockage in the rotor housing Remove blockage within the housing
Too high a PTO speed Start PTO in 540rpm until it run smoothly & re-start in
1000rpm then blockage clears.
Shear bolt has failed Replace shear bolt
Belts slipping on rotor Tension the rotor drive belts according to section
12.8.2
Bale chamber no
longer
operates or only
very
slowly.
No power supply Check Bluetooth is connected & investigate power
supply.
Auxiliary stop button depressed. Release stop button.
Oil tank isolation tap closed. Open tap.
Material jammed between bale chamber
and bodywork.
Check edges of bale chamber for material blockage.
Maximum tub speed not calibrated
correctly.
Follow calibration procedure in section 9.3.
Bale chamber chain has come off
sprockets.
Check sprocket condition, fit the chain and tension it.
Bale chamber chain broken. Check sprocket condition and replace chain.
Bale chamber chain is slipping Check tension of both bale chamber drive chains.
Motor not turning. Check connections. See hydraulic valve fault solutions
Dirt or contamination in the proportional
flow slice or relief valve controlling the
Bale Chamber speed.
Remove the proportional cartridge and relief valve from
the flow control slice inspect for contamination clean
and replace. If problem persists or re occurs regularly
replace filters and hydraulic oil with new clean ISO
HV46 grade oil.
Slow
Discharge.
Bale chamber speed too slow. Increase rotation speed of the bale chamber (see
section above).
Material lodged against side of bale
chamber.
Reverse tub for at least two rotations to remove
blockage then resume chopping.
Blockage in rotor housing. Unblock the rotor housing.
Screen blocked. Remove blockage from screen.
Hammers are worn. Turn or replace hammers.
Rotor speed low. Check tractor PTO Speed is 1000 RPM.
Bale stops
discharging.
Rotor not rotating. Replace shear bolt in PTO shaft
See solutions in rotor section .
Bale chamber not rotating. See solutions in Bale chamber section above.
Conveyor is not moving. See solutions in Conveyor section .
17
TOMAHAWK FAULT FINDING CHART – PART 2
Symptom Fault Possible Solutions
Shear bolt fails. Blockage in rotor housing
Harsh engagement of the PTO
Unblock the rotor housing
When starting the machine ensure engine revs
are as low as possible.
Control desk not
functioning.
No power to the machine electrics Check power is live at the socket. Investigate
wires.
Polarity on supply cable to control desk
incorrect.
Reverse connections in supply cable
connection.
Auxiliary stop button depressed.
Release stop button.
Bluetooth connection has not completed
and the LED is still flashing preventing
the control desk from turning on.
Should the control desk fail to connect to the
machine unit press the “ON” and “OFF” buttons
together for 2 seconds. Or remove all plugs, wait
10 seconds & re-connect and try again.
Damage to electronic circuit. Contact Teagle Machinery Ltd.
Conveyor Belt will not
fold up or unfold from
transport /working
position
Hydraulic hoses incorrectly connected to
the tractor.
Ensure the correct pairs of hoses are connected
to the tractor.
Tractor hydraulic system fault. Consult tractor troubleshooting manual.
Conveyor Stops or
runs slowly
Control desk turned off / faulty. Ensure control desk is on and connected.
See solutions in control desk section above.
Auxiliary stop button depressed. Release stop button.
Material jamming conveyor. Visually inspect and remove any blockages.
Incorrect belt tension. Tension belt according to section 12.12.1.
Insufficient oil flow from the pump. See hydraulic valve and pump section. Increase
oil supply to the motor by adjusting the thumb
screw.
PTO speed too low. Ensure PTO speed is set to 1000RPM.
Conveyor belt pulls
off support rollers
Incorrect belt tension. Tension belt according to section 12.12.1
Excessive vibration
from the machine
Rotor unbalanced. Check the hammer layout is correct.
Hydraulic valve fails
to operate.
No oil flow from the pump. Check oil shut off tap is on.
Check tension of pump drive belts
No electric power supply to the machine.
Ensure the power supply is connected.
Check the in line fuse (fuse is blown if the fuse
holder LED is on).
Check for damage to the power supply cable.
Dirt or contamination in the proportional
flow slice or relief valve controlling the
bale chamber speed.
Remove the proportional cartridge and relief
valve from the flow control slice inspect for
contamination clean and replace. If problem
persists or reoccurs regularly, replace hydraulic
oil with new clean ISO HV46 grade oil.
Replace Suction and return line filters.
18
TOMAHAWK FAULT FINDING CHART – PART 3
Symptom Fault Possible Solutions
Oil leaking from
between slices of the
valve.
Internal pressure in valve.
Clamping bolts loose. Check bolts through valve tightened to correct
torque specified in the maintenance section.
Separation of slices in valve block as a
result of reverse oil flow (only when
connected to a double acting spool
valve).
Interface seals damaged by either of the
above.
Replace damaged seals.
19
Rotor Hammer Layout
Notes
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