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SECTION 2 

CONTROL DESK FUNTIONS

 

Section 2.1 Control Desk

 

Connecting the control desk & 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, first make sure the junction boc on the machine has power, if 

it has, 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. 

 

Programming electronic controls 

The electronic controls are programmable via the control desk to optimise the performance of the machine.  
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 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. 
 

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. 

 

Summary of Contents for Tomahawk C12

Page 1: ......

Page 2: ...ty 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 equipmen...

Page 3: ...trol Desk Functions 4 SECTION 3 Electronic Parts and Circuit Diagrams 7 SECTION 4 Hydraulic Components 9 SECTION 5 Oil tank Components and Hydraulic Pump 21 SECTION 6 Solenoid Valve Control Trouble Shooting 23 SECTION 7 Solenoid Valve Controls Repair And Adjustment 26 2 ...

Page 4: ...E FITTED AS THIS WILL INVALIDATE WARRANTY If a higher rated fuse is fitted whilst the power cable is connected to the incorrect polarity the control desk will suffer severe damage and have to be replaced Also a higher rated fuse will give no protection from power surges when connected correctly When fitting the cable make sure it is routed away from high temperature and moving engine components Av...

Page 5: ...nnected to a power source Should the control desk fail to connect to the machine first make sure the junction boc on the machine has power if it has 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 Programming electronic controls The electronic controls are programmable via the control desk to optimise the pe...

Page 6: ... 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 int...

Page 7: ...manual mode To select the automatic bale chamber speed control press this button To select the manual bale chamber speed control press this button This mode can be used to check the tub is spinning correctly This mode also runs the risk of stalling the tractor as you have to increase or decrease the tub speed manually to stop the tractor staling to maximise the chopping action Role of the red flas...

Page 8: ...42 1 Cables 6 Adaptor Cable EC2002 1 7 Tractor Power Supply Cable EC2001 1 Female 3 Pin Socket SC3598A 1 8 15 Amp Blade Fuse EC1026 1 Junction Box Assembly EC2004 Comprising Items 9 15 9 Junction Box To Tractor Cable EC2011 1 Male 3 Pin Plug SC3597 1 10 Junction Box PCB Removable EC2007 1 11 Junction Box PCB Fixed EC2006 1 Pan Head Screw M4 x 20 FAS2491S 4 Locknut M4 FAS2329S 4 12 Speed Sensor Cab...

Page 9: ... VE Red VE Black Power to oil cooler VE Red VE Black Conveyor S1B Reverse S7B Forward S6 Speed sensor LED s Flashing beacon entrance S5A Auxiliary stop entrance Speed sensor entrance Auxiliary stop Auxiliary stop connection Flashing beacon connects to S5A Speed sensor connection Speed sensor 8 ...

Page 10: ...Outlet Slice HYD5436 1 2 Bale Chamber Reverse Slice HYD5405 1 Seal kit for above HYD5316 1 3 Bale Chamber Forward Speed HYD5437 1 Slice Seal kit for above HYD5438 1 4 Inlet flow divider 70 lpm HYD5439 1 Seal kit for above HYD5440 1 5 Conveyor Slice HYD5441 1 Seal kit for above HYD5316 1 6 End Cap Conveyor Relief Valve HYD5406 1 Torque rating on M8 bolts of valve block should be 13 5 Nm 10 ft lb To...

Page 11: ...10 Section 4 2 Identifying hydraulic slices components Notes ...

Page 12: ... in O Ring 1 3 Complete valve seal kit O Ring 1 4 HYD5435 O Ring 1 4 22 Pressurising valve HYD5412 1 2 3 4 Figure 10 Pressurising valve HYD5412 4 21 Outlet slice with pressurising valve HYD5436 Item No Part No Description Qty 1 HYD5315 Outlet cover 1 2 HYD5412 Pressurizing valve 1 1 2 ...

Page 13: ...YD5316 O Ring 2 4 Seal Kit HYD5316 O Ring 1 5 HYD5351 12 V Coil 2 6 HYD5352 Solenoid Cartridge 2 HYD5353 Cartridge Coil Nut items 5 6 1 7 Not Avail Individually Forward Reverse Spool 1 8 Source Locally M6 x15 SKT HD Cap Screw 2 4 23Bale Chamber Reverse Slice HYD5405 seal kit no HYD5316 1 2 3 4 5 6 7 8 ...

Page 14: ... Slice HYD5437 seal kit no HYD5438 Item No Part No Description Qty 1 Seal Kit HYD5438 O Ring 1 2 HYD5411 Combined Bypass Relief Valve 1 3 Not available Housing 1 4 HYD5179 12V Coil 1 5 HYD5313 Solenoid Cartridge 1 1 2 3 4 5 13 ...

Page 15: ...14 4 241 Combined Bypass Relief Valve HYD5411 part of Item No Part No Description Qty 1 HYD5411 Complete Assembly 1 2 Seal Kit O Ring 1 3 HYD5340 O Ring 1 4 O Ring 1 5 O Ring 1 1 2 3 4 5 Notes ...

Page 16: ...flow divider HYD5439 seal kit no HYD5340 1 2 3 4 1 1 1 Item Part No Description Qty 1 Seal kit HYD5340 O Ring 1 2 Not available Flow control cartridge 1 3 Not available Housing 1 4 HYD5314 Flow cartridge assembly 1 ...

Page 17: ...16 4 26 Conveyor Slice HYD5441 seal kit no HYD5316 1 1 3 2 4 Item Part No Description Qty 1 Seal kit HYD5316 O Ring 1 2 HYD5179 12V Coil 1 3 HYD5313 Solenoid Cartridge 2 4 HYD5306 Closure Plate 1 ...

Page 18: ...HYD5406 seal kit no Item Part No Description Qty 1 Seal Kit HYD5081 O Ring 3 2 Seal Kit HYD5081 O Ring 2 3 Seal Kit HYD5081 O Ring 1 4 Not Avail Individually Blanking Plug 1 5 Not Avail Individually Manifold 1 6 HYD5070 Relief Valve 1 1 2 4 5 6 3 ...

Page 19: ...YD5435 4 22 Pressurising valve HYD5412 HYD5413 1 4 23 Bale chamber reverse slice HYD5405 HYD5316 1 4 24 Bale chamber forward slice HYD5437 HYD5338 1 4 25 Inlet flow divider HYD5439 HYD5340 1 4 26 Conveyor Slice HYD5441 HYD5316 1 4 27 End cover with conveyor relief valve HYD5406 HYD5081 1 18 Section 4 4 Summary Of Seal kits ...

Page 20: ...19 Section 4 4 Hydraulic Hoses Fittings ...

Page 21: ... 2 HYD4204 2 F 1 1 4 Ball Valve Tap HYD1974 1 Bonded Seal 1 1 4 HYD4208 3 1 1 4 BSP M M Union HYD1017 2 1 1 4 BSP 90º Swept Elbow HYD1766 1 G Tap to Pump Hose HYD2501 1 1 1 4 to 1 BSP M M Union HYD1124 1 Bonded Seal 1 HYD4207 1 H Pump to Solenoid Valve HYD2331 1 Bonded Seal 3 4 HYD4205 2 3 4 BSP M M Union HYD1015 1 3 4 to 1 2 M M Union HYD1119 1 Bonded Seal 1 2 HYD4204 1 J Valve Block to Oil Coole...

Page 22: ...205 1 2 Pump Support Bearing HYD7101 1 Key 8x7x40mm Round Ends FAS8155 1 3 Pump Spacer CM2209 1 Section 5 2 Hydraulic pump 21 Ref Description Part No Q ty Associated components Part No Q ty 1 Visual Level Indicator HYD5362 1 2 Oil Filler Cap Assembly HYD5360 1 Setscrew M5 x 20 FAS8903P 6 Locknut M5 FAS2328 6 Plain Washer M5 FAS2341P 12 3 Return Line Filter HYD5358 1 Replacement Element HYD5359 1 S...

Page 23: ...mber 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 ch...

Page 24: ...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 PTO speed too low Ensure PTO speed is set to 1000RPM Insufficient oil flow from the pump See hydraulic valve and pump section Increase oil supply to th...

Page 25: ...t Possible Solutions Oil leaking from between slices of the valve Clamping bolts loose Check bolts through valve tightened to correct torque specified in the maintenance section Interface seals damaged by either of the above Replace damaged seals Notes ...

Page 26: ...s Diagnostics can only be achieved with the use of a multimeter capable of measuring a variable voltage in the range 0 12v 6 3a Bluetooth controls Measure the varying voltage at the connector to the coil a variation of 6v in a range from 4v to 10v should be measured If the above satisfactory readings cannot be obtained then one of the two following faults has occurred 1 Bale chamber max and min va...

Page 27: ...valve assembly from the outlet cap and check the piston is free to reciprocate properly 6 8 Leaks seal replacement Remove the hoses and electrical connections from the valve Remove the valve on its mounting plate from the machine Take the mounting plate off the valve and thoroughly clean the valve of dirt and debris before stripping the valve To split the valve to replace interface seals undo the ...

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