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Spearhead TWIGA 

120

 

 

12

12

12

12

 

VEHICLE / TRACTOR PREPARATION

VEHICLE / TRACTOR PREPARATION

VEHICLE / TRACTOR PREPARATION

VEHICLE / TRACTOR PREPARATION

 

 
We recommend vehicles are fitted with 
cabs using ‘safety glass’ windows and 
protective guarding when used with our 
machines. Fit Operator Guard using the hooks  
provided. Shape the mesh to cover  
all vulnerable areas. Remember the driver must be  
looking through mesh and/or polycarbonate glazing 
when viewing the cutterhead in any working position - unless the vehicle/ cab 
manufacturer  can  demonstrate  that  the  penetration  resistance  is  equivalent  to,  or  higher 
than,  that  provided  by  mesh/polycarbonate  glazing.  If  the  tractor  has  a  roll  bar  only,  a 
frame must be made to carry both mesh and polycarbonate glazing. The operator should 
also  use  personal  protective  equipment  to  reduce  the  risk  of  serious  injury  such  as;  eye 
protection  (mesh  visor  to  EN1731  or  safety  glasses  to  EN166),  hearing  protection  to 
EN352, safety helmet to EN297, gloves, filter mask and high visibility clothing. 
 

Vehicle Ballast 

 
It  is  imperative  when  attaching  ‘third-party’  equipment  to  a  vehicle  that  the  maximum 
possible  stability  of  the  machine  and  vehicle  combination  is  achieved  –  this  can  be 
accomplished  by  the  utilisation  of  ‘ballast’  in  order  to  counter-balance  the  additional 
equipment added. Front weights may be required for rear mounted machines to place 15% 
of  total  outfit  weight  on  the  front  axle  for  stable  transport  on  the  road  and  to  reduce 
‘crabbing’  due  to  the  drag  of  the  cutting  unit  when  working  on  the  ground.  Rear  weights 
may be required to maintain a reasonable amount of rear axle load on the opposite wheel 
from the arms when in work; for normal off-ground work i.e. hedge cutting this should be 
20%  of  rear  axle  weight  or  more  for  adequate  control,  and  for  ground  work  i.e.  verge 
mowing  with  experienced  operators,  this  can  be  reduced  to  10%.  All  factors  must  be 
addressed  in  order  to  match  the  type  and  nature  of  the  equipment  added  to  the 
circumstances under which it will be used. 
 

Factors that affect stability 

 
• Centre of gravity of the tractor/machine combination. 
• Geometric conditions, e.g. position of the cutting head and ballast. 
• Weight, track width and wheelbase of the tractor. 
•  Acceleration,  braking,  turning  and  the  relative  position  of  the  cutting  head  during  these 
operations. 
• Ground conditions, e.g. slope, grip, load capability of the soil/surface. 
• Rigidity of implement mounting. 
 
 
 
 
 
 
 

 

Содержание TWIGA 120

Страница 1: ...Spearhead TWIGA 120 0 0 0 0 T T T TWIGA WIGA WIGA WIGA 120 Edition 1 3 April 2014 Part No 8999039...

Страница 2: ...ctive 2006 42 EC The Machinery Directive is supported by the following harmonized standards BS EN ISO 14121 1 2007 Safety of Machinery Risk Assessment Part 1 Principles Part 2 Practical Guide and Exam...

Страница 3: ...ead Service Department on 01789 491867 Registration Verification Dealer Name Dealer Address Customer Name Date of Warranty Registration Dealer Signature NOTE TO CUSTOMER OWNER Please ensure that the a...

Страница 4: ...anship from the date of sale to the original purchaser for a period of 12 months unless a different period is specified 1 02 All spare parts supplied by Spearhead Machinery Limited are warranted to be...

Страница 5: ...turer s service schedule Failure to comply will invalidate the warranty In the event of a claim proof of the service work being carried out may be required NB Warranty cover will be invalid if any non...

Страница 6: ...alleged to be caused directly or indirectly by the goods including but not limited to any indirect special consequential or incidental damages resulting from the use or operation of the goods or any...

Страница 7: ...ion 7 Safety Information 8 Tractor Requirements 11 Tractor Preparation 12 Machine Fitting 14 Machine Removal 15 Storage 15 Operation 16 Maintenance 20 Cutterbar 21 Hydraulic Rams 23 Hydraulic System 2...

Страница 8: ...machine or equipment if not observed carefully NOTE An operating procedure technique etc which is considered essential to emphasis LEFT RIGHT HAND This term is applicable to the machine when attached...

Страница 9: ...of an extended implement Operate the machine only with a tractor equipped with an approved roll over protection system ROPS Always wear approved seat belts whenever the tractor or machine is running S...

Страница 10: ...safe code of operation The boom is designed only to position the cutterhead which is attached to it Never attempt to lift pull or push other objects with it Serious injury could result from a structu...

Страница 11: ...ls in good readable condition If the decals become damaged or unreadable reorder them immediately In addition to the design and configuration of this implement including safety signs and safety equipm...

Страница 12: ...during transport and operation The tractor selected must have a relief valve setting of between 2000 3000 psi 110 210 Bar NOTE Tractors which operate on a closed centre hydraulic principle are unsuit...

Страница 13: ...that the maximum possible stability of the machine and vehicle combination is achieved this can be accomplished by the utilisation of ballast in order to counter balance the additional equipment added...

Страница 14: ...d be taken in selecting the location of the weights to ensure they are added to a position that offers the greatest advantage Front axle locking check with tractor manufacturer The advice above is off...

Страница 15: ...ighten and squeeze the top hitch brackets Tighten the check chains stabiliser bars release its holding chain and position the control valve to suit both tractor and operator this is achieved by a comb...

Страница 16: ...tached to tractor Use chain to tie the hydraulic control valve back to the main arm this will make it easier for subsequent coupling up Blank off hose ends or loop the hoses and join with a coupling i...

Страница 17: ...nd Angle Down 4 Black Cutterbar On and Cutterbar Off Proportional Controls On proportional models all operational functions are controlled by a single joystick With the power switched on via the left...

Страница 18: ...for close in ground cuts Also check carefully that there is clearance between the arms and the tractor s roll bar cab before executing the swing over maneuver The operation of the arms takes priority...

Страница 19: ...l Limitations The TWIGA 120 is a light hedge trimming tool attempting to cut unsuitable material will cause the knife to stall resulting in the tractors relief valve blowing and overheated oil Tractor...

Страница 20: ...e machine in the transport position by carrying out the following procedure Position the main arm on the left hand side of the machine Fully retract the angle ram Fully extend the reach ram and operat...

Страница 21: ...mber regular lubrication ensures longer machine life and diminishes service costs In addition occasionally oil the con rod pivots and bushes Fasteners Check on a daily basis that all bolts and nuts ar...

Страница 22: ...aximum clearance of 1mm between the sloping faces of the knife holder 1 and the guide plate 2 This allows clearance for the knife to move freely and can be checked by placing a 5 8 dia bar into the co...

Страница 23: ...ly 1 25mm diameter by 1 3 8 35mm long Grinding is carried out with the end face of the grinder moving from the base of the knife section up to the points It is possible to re sharpen the knives in sit...

Страница 24: ...tion with the above operation or alternatively gently prized into position after the piston and locking nut are reassembled Refit the piston locking nut using Permabond A713 or a similar medium streng...

Страница 25: ...68 MILLERS Millmax 46 Millmax HV 46 Millmax 68 Millmax HV 68 MORRIS Liquimatic 5 Liquimatic HV 46 Triad 46 Liquimatic 6 Liquimatic HV 68 Triad 68 SHELL Tellus 46 Tellus T46 Tellus 68 Tellus T68 TEXAC...

Страница 26: ...with independent hydraulics when used on tractors with high speed PTO shafts The pump is anti clockwise in rotation No routine maintenance is necessary on the pumps other than a periodical check for...

Страница 27: ...6 CONTROL VA CONTROL VA CONTROL VA CONTROL VALVE LVE LVE LVE IMPORTANT Any service or maintenance work on hydraulic components must always be performed in a clean dry dust free environment to avoid ri...

Страница 28: ...e A Push the spool back through from the handle end far enough to re assemble the return spring or detent assembly plus the cover Attach cable assembly Main Relief Valve The main relief valve is press...

Страница 29: ...r to removal this will determine the correct hose path and avoid possible damage caused by incorrect hose routing Where a hose is attached to an additional fitting or union use a second spanner on the...

Страница 30: ...s hook over valve mounting bracket Connect Pump and drive assembly to P T O shaft on tractor Secure the torque chain so that the angle is approximately 90 to the torque arm and is in lateral alignment...

Страница 31: ...ump Pump Pump Pump Tank Kit Tank Kit Tank Kit Tank Kit Hydraulic Installation Hydraulic Installation Hydraulic Installation Hydraulic Installation The diagram below shows the hydraulic installation fo...

Страница 32: ...es Although a specialist tool is available for detaching this type of hose the task can easily be performed with careful use of a large broad ended screwdriver or thin nosed pliers The illustrations b...

Страница 33: ...Spearhead TWIGA 120 32 32 32 32...

Страница 34: ...Spearhead TWIGA 120 33 33 33 33...

Страница 35: ...rhead TWIGA 120 34 34 34 34 Spearhead Machinery Ltd Green View Salford Priors Evesham Worcestershire WR11 8SW Tel 01789 491860 Fax 01789 778683 www spearheadmachinery com enquiries spearheadmachinery...

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