Table of Contents
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2051P, 2651P, 2951P, 2962P, 3467P, 3767P
3970P, 4772P, 4872P, 4780P, 6700P
GRAPPLE LOADER
Installation, operation and
maintenance manual
NOKKA OY
Forest Line
Forest Line
PL 4, 40951 Muurame
FIN-40950 Muurame, Finland
Puhelin 044 7624 510
Tel. +358 44 7624 510
Telefax (014) 3100 206
Fax +358 44 3100 206
0351600
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Summary of Contents for nokka 2051P
- Page 1 2051P, 2651P, 2951P, 2962P, 3467P, 3767P 3970P, 4772P, 4872P, 4780P, 6700P GRAPPLE LOADER Installation, operation and maintenance manual NOKKA OY Forest Line Forest Line PL 4, 40951 Muurame FIN-40950 Muurame, Finland Puhelin 044 7624 510 Tel. +358 44 7624 510...
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Page 2: Table Of Contents
Adjusting the support bearing of gear rack ...........22 Powerless loader motions................22 Hydraulics .....................23 Changing hydraulic hose ................23 Adjusting the telescope chains on Nokka 4780 ..........24 How to order spare parts ................25 Serial number ....................26 Storage ......................26 Disposal of the machine ................26 Warranty policy .....................27... -
Page 3: To The Owner
Teollisuustie 4 40951 MUURAME, FINLAND guarantees that the loaders Nokka 2051P, Nokka 2651P, Nokka 2951P, Nokka 2962P, Nokka 3467P, Nokka 3767P, Nokka 3970P, Nokka 4772P, Nokka 4782P Nokka 4780P and Nokka 6700P on the market is in accordance with the Machinery Directive 2006/42/EC and national regulations which have been adapted to meet the directive’s... -
Page 4: Labels And Signs
These labels and signs must be found on the loader. Missing ones must be renewed immediately. Identification plate, the load and the model labels according to the loader. 1. Identification plate HK 2051P 3TR7888 HK 2651P 3TR7901 HK 2951P 3TR7899... - Page 5 2. Loadin label HK 2051P, HK 2651P, HK 2951P, HK 2962P, HK 3467P, HK 3767P, HK 3970P, HK 4772P, HK 7872P, HK 4780P, HK 6700P 3TR7898 3. Warning label 3TR0640 4. Manual label 3TR1320 5. Lifring point label 3TR0510 6. Model label: Nokka-label 3TR7729 7.
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Page 6: Before Use
1. BEFORE USE MEASUREMENT UNITS This Installation and Operating Manual utilises measurement units according to the international SI measurement system. DIRECTIONS In this Installation and Operating Manual, the right and left side and front and rear end of the machine are oriented from the driver perspective. SERIAL NUMBER Write down the serial number of your machine in the space reserved on page 26 of this booklet. - Page 7 7. When the loader is to be serviced, cleaned or adjusted or when accessories are to be mounted on it, place the booms of the loader in a suitable position and secure them so that they cannot move. Turn off the tractor and set the parking brake. 8.
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Page 8: Noise Prevention
NOISE PREVENTION Continuous exposure to noise may cause hearing problems and even a loss of hearing. Noise level in the workplace depends on noise insulation and the specific way the valves are mounted. Use suitable ear protectors or ear plugs that have a sufficient noise-dampening capacity. -
Page 9: Operating The Machine
2. OPERATING THE MACHINE PROPERTIES OF THE MACHINE IN BRIEF Nokka loaders are designed for wood loading in farm forestry work. When equipped with accessories manufactured by Nokka Oy, the loaders are suitable for loading of ground, feed, solid dung, round bales and corresponding materials used in farming. - Page 10 NOKKA 2962 P Weight of the loader ready for work with log grab ......730 kg Net lifting torque ................23,5 kNm Gross lifting torque ................29 kNm Swing torque ..................7 kNm Boom turning angle ................400 Maximum reach................... 6,2 m Extension stroke..................1,38 Maximum working pressure............18,2 MPa...
- Page 11 NOKKA 4772 P Weight of the loader ready for work with log grab ......965 kg Net lifting torque ................35,5 kNm Gross lifting torque ................47 kNm Swing torque ..................13 kNm Boom turning angle ................400 Maximum reach with extension ............7,2 m Extension stroke..................
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Page 12: Maximum Lifting Table
MAXIMUM LIFTING TABLE Maximum lifting capacity of models Nokka 2051P, Nokka 2962P, Nokka 3467P, Nokka 3767P, Nokka 3970P, Nokka 4772P, Nokka 4780P and Nokka 6700P loaders without the rotator and the log grab. Lifting capacities are measured according to different boom positions. -
Page 18: Preparing For Use
PREPEARING FOR USE The loader will be supplied to retail dealer and further to the customer on a transport stand or mounted on the loader mounting pad of the forest trailer. Unpacking from the stand and preparing the loader for work is done in the following way: 1. - Page 19 8. Bend the boom jib with a movement of the transfer boom so that the boom jib is completely bent. The grab has been fastened with the lifting boom, loosen the grab from the boom very carefully because the grab can slip down during the loosening (risk for accident).
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Page 20: Inspection Of Assembly
INSPECTION OF ASSEMBLY Test loading has been done in the factory and its information is registered on the log sheet. Equipment: • Check that all the pins, locking pins and other parts important for safety are secured and that the threaded joints are tight. Operation of the control valve: •... -
Page 21: Working Instructions
WORKING INSTRUCTIONS 1. Keep parking brake on when using the loader. 2. Make sure there are no people in the working area. 3. Take care that you can see the whole working area without difficulty. 4. Start working the loader with low engine revs to keep the movements of the loader slow. -
Page 22: Transport Position
TRANSPORT POSITION When a loader is mounted on lower arms of a tractor during transport, the loader’s centre of gravity should be as close to the tractor as possible. For transport, the best position is with the loader facing forward with the grab at the front of the tractor (picture 8). -
Page 23: Maintenance
3. MAINTENANCE SAFETY IN MAINTENANCE WORK Before carrying out any servicing, adjustment or cleaning work or mounting any accessories: 1. Disengage the hydraulic power output. 2. Fully lower the equipment. 3. Stop the engine. 4. WAIT until all parts have come to a standstill. 5. -
Page 24: Adjusting The Support Bearing Of Gear Rack
To make lubrication of the vertical boom’s top head easier, the turning cylinders and support legs have been scored. Before climbing atop the turning cylinder, extend the boom directly backwards and attach it to the frame of the forestry trailer or lay it on the ground. -
Page 25: Hydraulics
HYDRAULICS Hydraulic hoses, pipes and couplings should be checked from time to time to find possible fractures or leaks. Replace worn or broken parts with new ones to avoid damage. The return and pressure hose type is 1/2" SAE 100 R2SC, and the pressure. Always observe maximum cleanliness while servicing hydraulic components, and clean the inside of hoses from dust, rubber particles, etc., before installation. -
Page 26: Adjusting The Telescope Chains On Nokka 4780
ADJUSTING THE TELESCOPE CHAINS ON NOKKA 4780 P The right way to adjust the chains is done by measuring the distance from the 2- telescopeear to the end of the 1-telescope. Right distance is 5 - 10 mm (see the picture below). -
Page 27: How To Order Spare Parts
Do not order only by the picture - compare the part to its designation. Order the parts in good time from your dealer. If you have lost your spare parts catalogue, send the broken or worn-out part as a sample. Example. Nokka 3467 HK 3467 XXXX (serial number) 1 pc 0170090 bearing bush 45/50-40 WB 802 Name___________________________________________... -
Page 28: Serial Number
SERIAL NUMBER Write down the serial number of your grapple loader in the space provided below. You will find the serial number on the label placed on the left-hand side of the vertical boom. Serial number __________________________ STORAGE If the forestry trailer is not in use, it's working condition and resale value can be maintained by proper storage. -
Page 29: Warranty Policy
WARRANTY POLICY (Nokka Machines Division) Nokka Oy (the manufacturer) grants its products a warranty for the period of 6 months from the delivery date of the machine to the customer. However, the warranty is applicable in compliance with the policy only to claims submitted to the manufacturer within 3 years of the delivery date of the product to the representative of the factory or retailer. -
Page 30: Examples Of Calculating For Stability Determination
EXAMPLES OF CALCULATING FOR STABILITY DETERMINATION In this example: Loadet: Tractor: Valmet 605 Find out corresponding measures and weights of you own tractors; use them in the calculations. TRACTOR INFORMATION VALMET 605 OWN TRACTOR Wheel base 236 cm Distance from the rear axle 85 cm to the swing center point Rear axle weight... - Page 31 STABILITY DETERMINATION OF THE TRACTOR WITH THE LOADER FITTED TO THE THREE POINT LINKAGE WHEN LIFTED FROM THE SIDE Stability coefficient × × -------------------------------------- - × × Required extra weight to the centre of the front axle: × × × E ) N ×...
- Page 32 SIDE STABILITY, CALCULATION EXAMPLE A )cm 226 108 )cm – – … … )cm ……cm – A )cm 108 )cm – – 402cm … … )cm ……cm – × × -------------------------------------- - × × × × 2050 ------------------------------------------------------ - 0 97 ×...
- Page 33 LIFTING FROM THE REAR WITHOUT SUPPORT LEGS Stability coefficient: × ------------------------------------------------------ - × × × The required extra weight to the centre of the front axle: × × × × A ) M × – ------------------------------------------------------------------------------------------------- Where: Stability coefficient n > 1,0 tai n = 1,0 Right angle distance from the loader swing centre to the centre of the rear axle Right angle distance from the hanging point of the load to the centre of the rear axle Wheel track...
- Page 34 REAR STABILITY, CALCULATION EXAMPLE Without support legs 85cm ……cm 510cm 85cm 595cm … … ……cm 236cm ……cm 230cm 85cm 315cm … … ……cm × × 1240 236 ------------------------------------------------------ - --------------------------------------------------------------------------------- - 0 74 × × × × × × 505 595 480 85 …...
- Page 35 STABILITY DETERMINATION WITH TRAILER FITTED STABILITY DETERMINATION BY CALCULATION Stability coefficient n: × × -------------------------------------- - × × Where: Stability coefficient n > 1,0 tai n = 1,0 Right angle distance from the loader swing centre to the tipping edge Right angle distance from the end of the boom (from the load) to the tipping edge Right angle distance from the loader booms centre of gravity to the tipping edge Right angle distance from the loader boom centre to the centre of the rear axle...
- Page 36 A) Tractor: A trailer with one axle. The loader fitted on the trailer draw beam. B) Tractor: A trailer with two axles (bogey). The loader fitted on the trailer draw beam. PRACTICAL STABILITY TEST A loader is considered stable if during the test no more than one support point comes off the ground.
- Page 37 NOKKA OY Forest Division Forest Division PL 4, 40951 Muurame FIN-40950 Muurame, Finland Puhelin 044 7624 510 Tel. +358 44 7624 510 Telefax (014) 3100 206 Fax +358 14 3100 206...