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come to rest it is advisable to recheck belt tension and 

adjust if necessary. 
 

11.12  Hydraulic circuit 

 

CAUTION. 

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.   
 

CAUTION.   

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. 
 

CAUTION.   

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. 
 

11.13  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  between the minimum and maximum marks on the 

sight gauge on the right 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. 
 

11.14  Hydraulic oil change and suction filter 

 

The  most  accurate  way  of  determining  when  the  oil 

needs replacing is to undertake an 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. 
 

11.15  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 thus exposing all elements of the 

10 

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  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. 
 

11.16  Hose inspection 
 

IMPORTANT. 

Due  to  ageing,  wear,  damage  and  for 

other  reasons,  hydraulic  hose  assemblies  represent  a 

particular  hazard.  Therefore,  the  user  has  to  check 

hydraulic hose assemblies prior to their first use and at 

regular 3 month intervals.  
 

NOTE:   

Subject  to  the  conditions  of  operation,  all 

hydraulic  hoses  have  a  defined  lifespan  of  up  to  8 

years.  It  is  recommended  that  the  hoses  are  replaced 

within this time to minimise risk of failure. 
 

Visual  Inspection  Hose/Fitting: 

Any  of  the  following 

conditions  require  immediate  shut  down  and 

replacement of the Hose Assembly:  
 
 

Fitting slippage on Hose; 

 

Damaged,  cracked,  cut  or  abraded  cover  (any 

 

reinforcement exposed); 

 

Hard, stiff, heat cracked, or charred Hose; 

 

Cracked, damaged, or badly corroded Fittings; 

 

Leaks at Fitting or in Hose; 

 

Kinked, crushed, flattened or twisted Hose; 

 

Blistered, soft, degraded, or loose cover. 

 

Functional test:  
 

WARNING. 

Fluids  under  pressure  can  be 

dangerous  and  potentially  lethal  and,  therefore, 

extreme caution must be exercised when working with 

fluids  under  pressure  and  handling  the  Hoses 

transporting  the  fluids.  From  time  to  time,  Hose 

Assemblies  will  fail  if  they  are  not  replaced  at  proper 

time  intervals.    When  Hoses  fail,  generally  the  high 

pressure fluids inside escape in a stream which may or 

may  not  be  visible  to  the  operator.  Under  no 

circumstances  should  you  attempt  to  locate  a  leak  by 

“feeling” with your hands or any other part of the body.  

High pressure fluids can and will penetrate the skin and 

cause severe tissue damage and possibly loss of limb. 
 

WARNING.   

Even seemingly minor hydraulic fluid 

injection injuries must be treated immediately by a 

doctor  with  knowledge  of  the  tissue  damaging 

properties of hydraulic fluid. 
 

Operate  the  system  at  maximum  operating  pressure 

and  check  for  possible  malfunctions  and  leaks.  Avoid 

potential  hazardous  areas  while  testing  and  using  the 

system.  

 

11.17  Hydraulic valve and electric controls

 

 

If  problems  are  experienced  with  either  the  hydraulic 

system  or  electric  controls,  please  contact  Teagle 

Machinery Ltd. for advice. 

Summary of Contents for Tomahawk 404M

Page 1: ......

Page 2: ...ate Monthly 8 Belt tensioner pivot Single greasing point Monthly 9 Flap operating linkage Lubricate Monthly 10 Hydraulic cylinder pivots on hydraulic deflectors if fitted Two greasing points Monthly 1...

Page 3: ...ntial 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 ha...

Page 4: ...nance 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 res...

Page 5: ...moval 8 11 5 Drum mountings 8 11 6 Screen replacement 404M 505M only 8 11 7 Rotor removal 9 11 8 PTO shaft 9 11 9 PTO slip clutch 9 11 10 Drum drive belt adjustment 9 11 11 Booster fan pump drive belt...

Page 6: ...811kg 970kg 877kg Minimum tractor power requirement 37kW 45kW 37kW 45kW Sound power level 93db A 93db A 93db A 93db A 1 0 SPECFICIATIONS Heights listed are with the machine on the ground When operatin...

Page 7: ...2 0 EXPLANTAION OF PICTOGRAMS 3 Allow rotor to stop before removing blockage with tool provided Please read instruction book before using the machine Blockage removal tool...

Page 8: ...filters to EN 143 are likely to be adequate 3 11 NOTE If a hydraulic top link is used ensure that the top of the Tomahawk is clear of the cab with the machine fully raised and the top link in the full...

Page 9: ...k hitch system if the optional castor wheels are fitted The normal 3 point linkage system must be used if castor wheels are attached to the machine The machine is designed to use the standard 540 R P...

Page 10: ...e drum rotates in an anticlockwise direction when viewed from the rear This ensures that a the belt drive operates safely and effectively and that b the bale is fed into the rotor in the correct manne...

Page 11: ...efer to Maintenance for the correct clutch setting 9 3 Booster fan Ensure the power supply cables for the oil cooler and remote drum rotation kit are connected to the tractor If a flexible duct is fit...

Page 12: ...control knob at the base of the oil cooler Turning the knob in a clockwise direction reduces fan speed Should oil temperature increase to 45 degrees Celsius the oil cooler will automatically begin to...

Page 13: ...by means of an adjuster attached to the motor bracket If the belts slip persistently check that the drum is not fouling on the back plate If the belts turn over in their grooves or appear to run out...

Page 14: ...e 10 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...

Page 15: ...es of material see Fig 2 b A straw chute suitable for dry materials where a greater discharge height distance is required see Fig 3 Included in both kits are the deflector on off flap and operating li...

Page 16: ...ammers blades worn 404M 505M Sharpen or replace blades Tilt drum at steeper angle shorten toplink Increase oil flow rate from tractor to Tomahawk Rotate drum in correct direction Fit more bale gripper...

Page 17: ...n Cooler screen blocked with debris Cooler temperature sensor failed Connect cooler power supply cable to tractor Replace fuse Clear cooler screen Replace temperature sensor Excessive vibration Fan ou...

Page 18: ...14...

Page 19: ...15...

Page 20: ......

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