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Manual/Automatic Depth Control 

Manual/automatic  depth  control  ensures  an  even  depth  of  soil  in  the  finished  bed. 
The  depth  roller  (item  1,  fig  8)  runs  on  top  of  the  preformed  bed  following  the 
contours. On machines with manual depth control a turnbuckle is fitted between the 
chassis  and  depth  roller  frame.  Adjusting  the  length  of  the  turnbuckle  effects  the 
digging  depth  of  the  shares.  On  machines  with  automatic  depth  control,  the  depth 
roller  is  linked  to  a  trigger  plate  (item  2,  fig  8)  which  activates  a  pair  of  proximity 
sensors (item 3, fig 8) which then, via the valve block, actuate the share depth ram. 
Turning  the  adjuster  handle  (item  4,  fig  8)  changes  the  relationship  between  the 
depth roller and the trigger plate thus adjusting the working depth. An optional linear 
actuator can be fitted in place of the handle mechanism allowing adjustment from the 
in-cab  control  box.  A  depth  indicator  (item  6,  fig  1)  is  fitted  to  the  share  depth  ram 
giving the operator a visual indication of the action of the sensing system. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The  depth  roller  frame  pivots  on  two  rubber  torsion  mountings  (item  5,  fig  8).  By 
adjusting  these  mountings  it  is  possible  to  adjust  the  amount  of  pressure  the  roller 
exerts on the soil. The adjustment is made with the machine raised out of work with 
the roller hanging freely. Loosen the torsion mounting bolts (item 6, fig 8) and remove 
the pressure setting bolts (item 7, fig 8) and raise the roller until the holes align with 
the chosen hole setting and refit the bolts. 
 

 

A transport strap (item 8, fig 8) is fitted between the depth roller frame 
and the chassis. The strap must be removed before commencing work. 

 
 

The scrapers (item 9, fig 8) are fitted to the to eliminate dirt build up on the roller. Set 
the scrapers as close as possible to the roller surface but ensure they do not restrict 
the roller from turning.  
 
 

Discs 

The discs (item 1, fig 9) cut and contain the soil while feeding it over the shares onto 
the stars. Both discs should be adjusted so that the inner faces are approximately 5 
mm  from  the  outside  edge  of  the  share  blades.  To  adjust  the  discs,  slacken  hub 
clamp bolts (item 2, fig 9) and slide the disc to the required position. Retighten clamp 
bolts. 

OPERATION  

 

 

 

 

 

                1.14 

Fig 8 

Summary of Contents for MEGASTAR GEN-2

Page 1: ...MEGASTAR GEN 2 De stoner De clodder Standen Engineering Limited Hereward Works Station Road Ely Cambridgeshire CB7 4BP England Tel 01353 661111 www standen co uk Fax 01353 662370 ...

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Page 3: ...e CB7 4BP This handbook is issued on the condition that it must not be used copied or exhibited without their written permission IMPORTANT This operator s handbook should be regarded as part of the machine Suppliers of both new and second hand machines are advised to retain documentary evidence that this handbook was supplied along with the machine On installation of the machine i e starting off i...

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Page 5: ... Drawbar 1 17 Braked Axles 1 18 OPERATION IN THE FIELD Starting Off Your Machine 1 19 Getting The Best Results From Your Machine 1 19 Star Spacing 1 20 Star Speed 1 20 MAINTENANCE New Machines 1 22 Lubrication 1 22 Drive Belt Maintenance 1 23 Electrical System Maintenance 1 23 Hydraulic System Maintenance 1 23 Residual Hydraulic Pressure Dump Procedure 1 24 Testing The Auto Depth Control Circuit 1...

Page 6: ...o the machine and carefully read the message that follows Throughout this handbook the terms front rear left hand LH and right hand RH are derived from the tractor driver s position facing forward in the normal direction of travel Adjustments to the machine may have to be made singly or in combination according soil conditions Always allow the machine to settle to a new setting before making furth...

Page 7: ...ponents or even complete assemblies are redesigned from time to time Where possible the modifications are shown in the remarks column The first printing of each page in the spare parts section is identified as issue 1 at the foot of the page When a complete unit or assembly has been redesigned the appropriate pages are revised and printed as issue 2 The revised pages are filed behind the existing ...

Page 8: ...hines are working and never allow anyone to ride on the machine In dry dusty conditions it is prudent to use a tractor with an enclosed cab Never attempt to fit drive chains or drive belts to the machine while the drive sprockets or pulleys are in motion Normal safe working procedures should be adopted at all times Reduce speed when transporting the machine on sloping ground Do not work on ground ...

Page 9: ... mechanical or additional help when lifting heavy parts Regularly check hydraulic hoses for chafing or damage and replace as necessary Care must be taken when carrying out any work on the hydraulic system Even when stopped and disconnected from the tractor residual pressure will exist within the hydraulic system Therefore before commencing any work on the hydraulics ensure that the system is free ...

Page 10: ...1 5 SAFETY PRECAUTIONS ...

Page 11: ...SAFETY PRECAUTIONS 1 6 ...

Page 12: ...e must be connected to the tractor using the proper type and size of pin which should be securely fixed by the correct means This will ensure that it cannot be accidentally pulled or pushed out of place whilst the machine is in use The stand item 2 fig 1 is provided so that the machine is held at a suitable height for safely coupling to the tractor To adjust the height connect the hydraulic hoses ...

Page 13: ... sure that the drive shaft is fitted correctly and that the lock pins are engaged All the parts of the PTO shaft especially the guards must be kept in good order Check regularly that the guard is undamaged and fully protects the whole of the shaft and that both the guard and the shaft will telescope freely If it is possible to engage the inner and outer parts of a drive in more than two positions ...

Page 14: ...Standen dealer There must no restriction in this return oil Ensure that there is a full flow return or even better return straight back into the tractor gearbox Consult your tractor handbook or dealer for further information Open Closed Centre Hydraulics Two types of hydraulic system are currently in use by tractor manufacturers namely OPEN CENTRE or CLOSED CENTRE configurations Consult the tracto...

Page 15: ...he control box The function of each switch is listed below Hydraulic Drawbar optional The hydraulic drawbar push button activates deactivates the hydraulically damped drawbar system The LED is illuminated when the system is switched on Digger Share Raise Lower The 3 position spring toggle switch manually raises lowers the digger assembly increasing decreasing the depth of the shares below the soil...

Page 16: ...entre position the discharge web is stopped Move the switch up to discharge to the RH side of the machine or down to discharge to the LH side The corresponding LED will illuminate The dial marked cross conveyor speed control sets the speed of the discharge web Turn the dial clockwise to increase or anticlockwise to decrease the speed Rhizome Discharge Elevator Fold optional An optional discharge e...

Page 17: ...suit the selected bed width Both wheel legs must be set to the same hole positions so that the wheels remain symmetrical about the centre line of the machine see figure 7 Lifting equipment must be used when setting the wheels Before commencing axle adjustment ensure adequate jacks axle stands of minimum 2500 kg capacity wheel chocks and suitable lifting equipment are available It is important that...

Page 18: ...em 3 fig 5 item 2 fig 6 through the relevant hole in the flange plates Repeat the procedure for the opposite wheel Finally set the track rod to the correct length and secure using the locking bolts Ensure all nuts and bolts are fully tightened after adjustments have been completed Machine with Unbraked Axles Machine with Braked Axles A Transport 60 Transport B 64 60 C 68 64 D 72 68 E 76 72 F 80 76...

Page 19: ...of the sensing system The depth roller frame pivots on two rubber torsion mountings item 5 fig 8 By adjusting these mountings it is possible to adjust the amount of pressure the roller exerts on the soil The adjustment is made with the machine raised out of work with the roller hanging freely Loosen the torsion mounting bolts item 6 fig 8 and remove the pressure setting bolts item 7 fig 8 and rais...

Page 20: ...lade widths are altered then the disc positions will have to be adjusted to suit Vari Flow Web optional The vari flow web consists of a hydraulically driven web mounted above the star bed The web is designed to assist a smoother flow of soil and stones in conditions such as on steep slopes Speed is adjusted from the control box In hilly conditions the web will assist the waste material over the ba...

Page 21: ...coupling to the tractor service port Ensure the service does not interfere with the normal hydraulic supply to the machine Speed of the mechanism can be set using the restrictor valve item 1 fig 17 behind the rear RH guard door Cross Conveyor Drive to the cross web is by means of two hydraulic motors one at each end In order to place the conveyed material into the centre of the designated trench t...

Page 22: ...ch end of the web The elevator is unfolded for work using the control box elevator fold switch Before operating the discharge elevator ensure everyone in the vicinity is aware of your intentions and that there are no overhead restrictions See the HSE information sheet within this handbook Axle Steering The axle steering is used to keep the machine correctly in the rows especially on sidling slopes...

Page 23: ... the drawbar is extending in normal work increase the pressure setting by increments of 10 bar until the drawbar is static DO NOT EXCEED 120 BAR If the drawbar is still not functioning correctly when the maximum pressure is reached consult your Standen dealer for further advice Do not carry out maintenance on the drawbar with circuit pressurised Stop the tractor engine and reconnect the hose to th...

Page 24: ...complish best performance and maximum output 1 Ensure the tractor tyres are not too wide or they may crush the side of the ridges 2 Ensure the tractor drawbar pin is not too long or it may drag and bunch up soil and weed 3 Ensure correct forward speed of tractor to match the conditions and machine capabilities 4 Ensure the shares are clean and shiny and that the share bolts do not protrude above t...

Page 25: ...o be taken when fitting the stars so that the spiral effect caused by the alternate long fingers follows around the complete star shaft correctly Star Speed The following charts are a guide to engine revs PTO speed and star shaft speeds and show the relationship to web pitch With stars it is important to ensure the required star shaft speed is maintained The charts show how easy it is for the oper...

Page 26: ...pical soil type 1800 490 227 28 1700 460 214 1600 440 202 35 Light 1500 410 188 40 1400 380 177 45 Medium 1300 350 164 1200 325 151 50 Heavy Engine r p m PTO r p m 540 setting Star shaft r p m Approx web size mm soil texture Typical soil type 1800 490 227 1700 460 214 45 1600 440 202 Light 1500 410 188 1400 380 177 50 1300 350 164 Medium 1200 325 151 1100 300 139 55 1000 270 126 Heavy 1 21 OPERATI...

Page 27: ...ounted on the bridge in the centre of the machine should be regularly examined for any signs of leaks and checked for oil level and if necessary topped up To ensure the efficient operation of the PTO shafts it is vital to grease the sliding section on a daily basis Failure to do this will result in early failure of the shafts The PTO shaft should be disconnected from the tractor and the two halves...

Page 28: ...enance The components within the electrical system are designed to be maintenance free If it becomes necessary to carry out any repair only a competent engineer capable of this type of work should carry out the repair Periodically ensure that all multi pin plugs are correctly fitted into their sockets and are not becoming loose Hydraulic System Maintenance The components within the hydraulic circu...

Page 29: ...es the method of relieving the residual pressure within the hydraulic system It is essential that this procedure is carried out before any maintenance or repairs are attempted on the hydraulic system 1 Place chocks to the front and rear of both wheels to prevent the machine from moving 2 Operate the depth ram to fully lower the front of the machine 3 Disconnect the machine from the tractor leaving...

Page 30: ...3 fig 18 are adjustable and have a range of 0 1 seconds to 3 seconds on a scale 0 to 10 Ensure the timers are set to the same value Reducing the timer delay makes the share depth control more sensitive to ground level variations whilst increasing the value reduces the sensitivity Testing the Axle Auto centring Circuit If the axle auto centring circuit is not functioning check that the proximity se...

Page 31: ...epth control sensors item 3 fig 8 A 30mm B 74mm C 3mm Axle self centring sensors item 2 fig 12 A n a B 100mm C 3mm Proximity Sensor Operation Depending on the circuit being checked activate either the share auto depth or axle auto centring circuit Trigger each sensor in turn by placing a metal object such as a screwdriver in front of the sensor As the sensor is triggered a light should illuminate ...

Page 32: ...should be adjusted as close as possible without actually touching 6 Check all hydraulic cylinders valves and pipe work for signs of leaks or damage repair or replace as necessary 7 Carry out lubrication 8 Grease axle king pins Weekly Maintenance During the working season the following weekly maintenance should be carried out 1 Carry out all the procedures listed in daily maintenance 2 Check all sh...

Page 33: ...ent on any exposed bright metal surfaces which have been polished by the soil flow 2 Clean all drive belts 3 After carrying out the hydraulic residual pressure dump procedure any parts of hydraulic cylinders rods that are still exposed should be greased or oiled to prevent corrosion 4 Ensure that the tyres are inflated to the correct pressure 5 Ensure that the hydraulic hose quick release coupling...

Page 34: ...Input Drive Belt Adjustment 1 29 MAINTENANCE ...

Page 35: ...LH Drive Belt Adjustment MAINTENANCE 1 30 ...

Page 36: ...RH Drive Belt Adjustment 1 31 MAINTENANCE ...

Page 37: ...min consult your Standen dealer Electrical requirements from tractor 12V DC negative earth Drive requirement from tractor PTO 1 3 8 6 spline 540 rpm maximum Tyre size pressure 11 5 80 15 3 12PR 3 5 51 p s i 12 0 75 18 12PR 4 0 58 p s i Wheel nut torque M18 x 1 5 270 NM Nut bolt torque Description Torque Description Torque M6 nyloc zinc nut 14 nm M6 bolt steel nut 10 nm M8 nyloc zinc nut 31 nm M8 b...

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Page 39: ...DIAGRAMS Electrical Circuit 2 1 CONTENTS ...

Page 40: ...Electrical Circuit 2 1 DIAGRAMS ...

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