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User manual

 

 

2014 

 

Felling Grapple GMT 035 

25

6 SETTINGS OF THE FELLING GRAPPLE 

 
 

WARNING 

 
 
 

The hydraulic pressure measurements and adjustments may only be performed by 
authorized persons. 
 
By mounting of the pressure gauge, adjusting the flow control and other repairs, the 
engine must be turned off due to safety reasons. 
 
Pressure measurements and adjustments must be carried out carefully and cautiously. 
 
 

6.1 Pressure settings 

 

Make sure the pressure doesn’t exceed 25 MPa (250 bar). This may lead to damage to the 
valve block.

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 

 

Summary of Contents for GMT 035

Page 1: ...USER MANUAL FELLING GRAPPLE GMT 035 Gierkink Machine Techniek Kapelweg 44 7134 RJ Vragender The Netherlands Tel 31 0 544 370315 Fax 31 0 544 370316 E info gierkinkmt nl I www gierkinkmt nl...

Page 2: ...E 16 5 1 Safety recommendations 16 5 2 Daily maintenance 16 5 3 Storage of Felling grapple 16 5 4 Replacing the saw bar and chain 17 5 5 Lubricants 18 5 6 Oil for hydraulic system 18 5 6 1 Quality of...

Page 3: ...criptions instructions and technical data from this manual are based on the most recent information from the construction of the felling grapple The product is constantly in development and therefore...

Page 4: ...ght Year 240 Kg Max load Max load 2000 Kg Max pressure Max Pressure 250 Bar 1 2 2 Type plate Nr 2 This icon indicates the user that installation maintenance and repair of the felling grapple may well...

Page 5: ...ing is installed correctly Make sure to dress appropriately for your on safety so getting stuck behind anything doesn t occur Use PPE such as safety shoes safety goggles helmets and ear protection Be...

Page 6: ...irs needs to be carried out to the felling grapple top the engine and take the pressure of the system this is for your own safety The mechanic and the possible needed assistant must be out of range fr...

Page 7: ...oil or grease for cleaning your hands These may contain traces of metals and additives which can cause serious damage to the hands If oil or grease gives an irritant reaction on hands or other body pa...

Page 8: ...o the A nipple on the valve block Between the hose for grapple open on the valve block has to be mount a T connector with a special valve This T connector is already mounted on the special valve which...

Page 9: ...is will give them extra protection If the rotator doesn t have a suitable flange Gierkink Machine Techniek can provide it 3 1 1 Pressure level Always check the maximum work pressure of the basic machi...

Page 10: ...User manual 2014 Felling Grapple GMT 035 10 3 2 Hydraulic schedule for mounting...

Page 11: ...orking area is a steep slope or a soft surface we d recommend you to set the parking brake when using the felling grapple WARNING Always ensure that there is nobody in the danger zone in a round of 70...

Page 12: ...mstances of threes for example a frozen tree can limit the maximum cutting size When grabbing a tree make sure the grapple parts close well so the grapple can position itself well around the tree Then...

Page 13: ...r sawing top of the trees and branches on height when using a rotating telescopic handler or truck crane The biggest danger while working on these heights is that the length and weight of a branch wil...

Page 14: ...User manual 2014 Felling Grapple GMT 035 14...

Page 15: ...sawbar Flexible screwdriver Mechanical chain tensioner Combination spanner 11 16 Screwing and unscrewing locknuts on valves Allen key 3 16 Adjusting valves Allen key 17mm Filling chain oil Allen key...

Page 16: ...high temperatures dust etc extra lubrication is necessary Also check for damaged hoses oil leaks loose bolts and tolerance on shafts etc while lubricating Remove snow ice and dirt from the felling gra...

Page 17: ...he chain or saw blade needs to be replaced the blue throttle valve need to be closed Now operating the function grapple close ensures that the blade won t go back in the saw housing Next procedure is...

Page 18: ...rgrease LS EP CASTROL LM Grease ESSO Beacon EP 2 MOBIL Mobilux EP2 NESTE Allgemeinfett GP 2 SHELL Alvania EP Grease 2 TEBOIL Multi Purpose Extra TEXACO Martak All Purpose 5 6 Oil for hydraulic system...

Page 19: ...liters 5 7 1 Chain lubrication The chain will be lubricated by every cut There are three different dosage screws that secure the chain oil can be adjusted On the set screws you can see grooves 1 groov...

Page 20: ...erefore it is strictly forbidden to be in the danger zone When you replace the chain you always need to install a new or controlled chain With a sharpened chain the risk of a broken chain is much lowe...

Page 21: ...per disc see Figure 2 Keep the grind as much as possible in the angle of 35 degrees during sharpening Sharpening direction from the inside to the outside of the cut joints Angle of the chisel Figure 3...

Page 22: ...sliding surfaces will become much larger see 1 there for you must keep the chain sharp If the grind will be kept to low the cutting angle will become positive which makes the angle too sharp too small...

Page 23: ...to a blue color The blue color indicates the hardening of the chain This can lead to cracking and breaking of the chain Curved saw blade A bent saw blade can be directed if there are no sharp bends in...

Page 24: ...User manual 2014 Felling Grapple GMT 035 24 Blackberries Remove burrs in the groove to avoid cracking Remove the burrs with a grind Grinding direction from the inside out Grinding off on 45...

Page 25: ...ed by authorized persons By mounting of the pressure gauge adjusting the flow control and other repairs the engine must be turned off due to safety reasons Pressure measurements and adjustments must b...

Page 26: ...the felling grapple is adjusted for immediate use by Gierkink Machine Techniek Figure Top view of valve block 1 Adjusting saw pressure K Measuring point closing grapple 7 Adjusting speed tilt down 10...

Page 27: ...up position Now each time turn out this valve a little while opening grapple until this comes into tilt up position Valve 6 This valve makes sure that the tiltframe only goes back into normal grapple...

Page 28: ...swing to the crane boom Settings as follows Turn in valve 7 until the stop and put the grapple tilt up position grapple open Now it won t go back into tilt down Then turn in valve 6 until the grapple...

Page 29: ...up position however it does in tilt down position it may be that the pressure in the accumulator is to high If any of the above problems occurs the pressure in the accumulator should be measured The p...

Page 30: ...le needs to open the throttle valve slowly until the pressure rises till 45 50 bar Once filled at pressure the throttle valve needs to be closed immediately Now tilt up no longer needs to be activated...

Page 31: ...adjustable with a throttle valve This valve is attached on to the saw cylinder and is located in the box between the saw casing and the grapple frame When unscrewing this valve the velocity of the sa...

Page 32: ...cessary Replace the chain and saw bar in time because a sharp chain reduces the risk of fractures and cracks Modifications to the hydraulic system to increase the chain speed is not allowed If you re...

Page 33: ...can be opened with the Allen key which is included The length of the chain is 58 teeth and the saw blade is 46 cm long The gear is 11 teeth The gear must be fully in line with the groove in the saw bl...

Page 34: ...the system Read the maintenance and instructions precisely 2 Questions for the operator What went wrong What functions are affected Do I have the right machine Is the service well done Are there any s...

Page 35: ...ve of the tilt cylinder 10 the pressure limitation of the tilt cylinder 8 or the adjustable restrictors 6 7 are not sealing off any longer Solution Changing seals O rings 3 Problem When operating grap...

Page 36: ...ON If repairs or modifications are necessary to the grapple please contact Gierkink Machine Techniek first We can provide the right information about your work and other repairs or modifications Wrong...

Page 37: ...Felling Grapple GMT 035 37 8 SPECIAL SPECIFICATION 8 1 Sizes Opening wide of the grapple 850 mm Maximum felling diameter 350 mm Maximum operating pressure 25 MPa 250 bar Proceeds hydraulics 35 65 l m...

Page 38: ...arily Take the felling grapple to an approved demolition company The can carry out further removal of the grapple When the grapple can t be taken to an demolition company then carry out the following...

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