Gierkink GMT 035 User manual

USER MANUAL
FELLING GRAPPLE GMT 035
Gierkink Machine Techniek
Kapelweg 44
7134 RJ Vragender
The Netherlands
Tel. [phone]
Fax [phone]
E. [e-mail]
I. www.gierkinkmt.nl

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Index
1 GENERAL.........................................................................................................................3
1.1 Using the manual .......................................................................................................3
1.2 Warnings and warning icons......................................................................................4
1.2.1 Serial No. plate. 1................................................................................................4
1.2.2 Type plate Nr. 2...................................................................................................4
1.2.3 Type plate Nr. 3...................................................................................................4
2 SAFETY INSTRUCTIONS................................................................................................5
3 INSTALLATION................................................................................................................8
3.1 Mounting the felling grapple on the crane ..................................................................8
3.1.1 Pressure level......................................................................................................9
3.2 Hydraulic schedule for mounting..............................................................................10
4 FELLING WITH THE GRAPPLE.....................................................................................11
4.1 Safety recommendations..........................................................................................11
4.2 Felling.......................................................................................................................12
4.3 Lifting schedule........................................................................................................13
4.4 Special tools.............................................................................................................15
5 MAINTENACE ................................................................................................................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 the hydraulic oil..................................................................................18
5.7 Chainsaw oil.............................................................................................................19
5.7.1 Chain lubrication................................................................................................19
5.8 Working with the chainsaw.......................................................................................20
5.9 Sharpening the chain ...............................................................................................21
6 SETTINGS OF THE FELLING GRAPPLE......................................................................25
6.1 Pressure settings......................................................................................................25
6.1.1 Setup of the valve block.....................................................................................26
6.1.3 Saw bar speed...................................................................................................31
6.2 Safety requirements for the saw...............................................................................32
7 TROUBLESHOOTINGS MANUAL..................................................................................34
7.1 General ....................................................................................................................34
7.2 Checklist...................................................................................................................34
7.3 Problem list ..............................................................................................................35
7.4 Torques....................................................................................................................36
7.4.1 Repair or welding...............................................................................................36
8 SPECIAL SPECIFICATION............................................................................................37
8.1 Sizes ........................................................................................................................37
9 REMOVAL OF GRAPPLE ..............................................................................................38

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1 GENERAL
1.1 Using the manual
This user manual is designed for people who already have experience with forestry
machines. Using of the general knowledge and skills will promote the use of this manual.
WARNING
The warning icons indicates very important information about safety risks. The dangers of
situations could lead to disability or death.
ATTENTION
The attention icons indicates that a product, process or environment maybe can be
affected.
All descriptions, 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 the manufacturer retains the right
to make changes to the product without giving prior notice.
When there are problems with the felling grapple, you often can solve the problem by
reading the instructions carefully. When repairing the unit yourself and can’t solve the
problem, please contact the dealer or an authorized repair shop.
WARNING!
When ordering parts or asking for repair instructions, always give the serial number of the
felling grapple. This will increase the delivery and the service.

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1.2 Warnings and warning icons
There are warnings and warning signs installed on certain parts. On basis of those texts
and icons, personal damage or an accident with the felling grapple can be avoid.
1.2.1 Serial No. plate. 1
Type plate
Weight: indicates the weight of the felling grapple including oil from cylinders and hoses.
CE: European mark of approval.
Type: Product Name.
Type: GMT 035
Serial No.: Serial No.
Year/Weight: 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 be aided by carefully reading
the manual.
If the felling grapple will be used by more than one person, then
the owner needs to make sure to point the user to read the
manual and follow the instructions given.
Mailing address for delivery: Gierkink Machine Techniek,
Kapelweg 44, 7134 RJ Vragender, The Netherlands.
Tel. [phone]
Fax. [phone]
1.2.3 Type plate Nr. 3
Warning ‘safety distance’.
SAFETY DISTANCE: 70 meter from the appropriate vehicle / machine.

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2 SAFETY INSTRUCTIONS
WARNING
Not all these safety hazards prevent accidents when using the felling grapple, but they
help as much as possible with dangerous situations and to avoid accidents.
To complement the data and instructions that are given, it’s also needed to follow the
regulations.
Take time to know how to use the felling grapple an dig in the instructions before going to
work with the wood energy felling grapple.
Follow all instructions in the manual carefully to avoid dangerous situations and not putting
yourself in danger.
Using the felling grapple is allowed only when all safety instructions are read and
everything 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 aware of the risk of slipping out when working with the felling grapple .
Make sure that no outsiders are within a radius of 70 meter from the basic machine.
Please be aware of telephone and electricity cables when working near power lines. Make
sure to stay at a safe distance and not endanger yourself. If you are not familiar with the
area, please contact the local power plant. When you are forced to leave the machine do
not hesitate to bring the machine to safety, but yourself as quickly as possible.
Leave the electricity hazard as soon as possible. Do not touch the machine and soil at the
same time. Don’t run away, but move on by pressing your legs together and walk away.

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WARNING
Make sure when installing the felling grapple the engine is shut down. Operate the joystick
a few times to make sure that all the pressure is of the system.
Under the influence of alcohol or drugs using the felling grapple is forbidden under any
circumstances (working or maintenance).
Perform maintenance and repair calmly and carefully.
When a replacement or spare part is needed, please contact Gierkink Machine Techniek.
This is the only way to get the original parts.
The pressure measurements and adjustments to the felling grapple are need to by done
by someone who can work precisely and carefully.
When maintenance or repairs 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 from moving parts
while measuring the pressure of the hydraulic system.
Increasing the pressure on the hydraulic system can cause damage to the felling grapple,
and also will increase the risk of an accident!
Make sure to keep the hydraulic hoses from the felling grapple in good condition. Replace
if necessary a damaged hose or connection on time. The high pressure jet of oil can
penetrate the skin and cause severe infections. Should this happen consult a doctor
immediately.
At the end of the day, or when switching off the engine, notice if the felling grapple is on a
stable surface.
Staying under the felling grapple is strictly forbidden, the crane boom can lower by his self.

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WARNING
Avoid direct contact with oil and grease as this can give a reaction to the skin and is
harmful for your health. When working with these substances, always read the instructions
and requirements of the manufacturer.
CAUTION: Be careful with hot oil!
Make sure when using or working with oil or grease to use the appropriate safety
measures, such as liquid gloves, protective cream and safety glasses .
Do not use 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 parts, go to a consult or
doctor immediately.
Faulty or soiled hoses must be properly removed at the appropriate drainage address.
Base-machine / Support-vehicle
The cabin of the machine must be carried out with safety-glass. The chainsaw can reach a
very high velocity. If the chain splits or breaks, flying parts can become dangerous objects.
Forwarder crane
Minimal crane size: 5 Ton/Meter crane
Mobile crane: From 4.5 Ton.
Maximum clamping force of gripper: 2.5 Ton

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3 INSTALLATION
3.1 Mounting the felling grapple on the crane
Remember when disassembling a normal grapple which hose is for grapple open and for
grapple close. Mount the rotator on the felling grapple as the connection for grapple close
is on the side of the cutting oil tank. The hose for closing the grapple must be connected to
the ‘B’ nipple on the valve block. The hose for opening the grapple must be connected to
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 is
delivered with the felling grapple. The A side of this valve must be connected to the T-
connector, the T side (tank) of the valve is connected to a ball valve. This ball valve should
be closed as soon there will be worked with a normal grapple. Attention: when the grapple
of the felling head is opened and in felling position, will this automatically lower if not
operated. This is how you know that the ball valve and the special valve are connected
properly.

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Connect the hoses from the rotator and the felling grapple so that they can’t be damaged,
and bring plastic spirals on to the hoses, this 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 machine. This can be measured
with a pressure gauge. The maximum allowable pressure is 250 bar. If the basic machine
can deliver more pressure, you will need to place a pressure reducer.

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3.2 Hydraulic schedule for mounting