Valtra VALMET Series Workshop Manual
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Valtra VALMET Series Workshop Manual

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VALTRA – VALMET
MEGA MEZZO HI-TEC
WORKSHOP MANUAL
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  • Page 1 VALTRA – VALMET MEGA MEZZO HI-TEC WORKSHOP MANUAL https://www.truck-manuals.net/...
  • Page 2 6650, 6800, 6850 6900, 8000, 8100 8200, 8400, 8050 Brake system 8150, 8450, 8550 8750, 8950 Steering sys- tem and Front 6600E---8750E axle Frame and Wheels Service Manual Cab and Shields Tractors Groups 10---100 Hydraulics Valtra Inc. 44200 Suolahti, Finland Tools https://www.truck-manuals.net/...
  • Page 3 Order no 39 210 211 ENGLISH https://www.truck-manuals.net/...
  • Page 4 11. Layout 10. General 12. Repairs 13. Maintenance https://www.truck-manuals.net/...
  • Page 5 https://www.truck-manuals.net/...
  • Page 6 To the reader The Service Manual for the Valmet tractors is intended to be a practical reference source to be used in work- shop. The repair instructions in the manual are based on methods which have been worked out in practice during normal workshop conditions and which are based on the use of special tools from the manufacturer when stated in the instructions.
  • Page 7 https://www.truck-manuals.net/...
  • Page 8 Model Code Page 1. 8. 2000 11. General 6000-- 8950 1. 9. 2002 The following supplements have been published for the Valmet 6000---8950 Service Manual: Ordering number Date Notes 39 256 211 15. 6. 1992 39 256 212 1. 9. 1992 39 256 213 15.
  • Page 9 https://www.truck-manuals.net/...
  • Page 10 Model Code Page 11. Layout 6000-- 8750 8. 11. 1990 Layout of Service Manual 1. Division into groups The manual is divided into groups (10 ---100) which are based on the make ---up of the tractor. The groups are listed on the first index leaf.
  • Page 11 Model Code Page 11. Layout 6000-- 8750 8. 11. 1990 3. Code designation Three ---digit code designations are used to distinguish the different document groups for the respective components. The same code is also used in the Time List as a reference to the text in this Manual. The code designation numbers appear both in the box at the top of the page and also in the headings.
  • Page 12 Model Code Page 8. 11. 1990 11. Layout 6000-- 8750 1. 4. 1997 Code designation in the Service Manual 10. General 110 Layout 120 Repairs 130 Maintenance 20 Engine 21. Engine 210 Technical data, tools, description 211 Cylinder block and flywheel housing 212 Cylinder head and valve mechanism 213 Crank mechanism 214 Timing gears...
  • Page 13 Model Code Page 8. 11. 1990 11. Layout 6000-- 8750 1. 4. 1997 50. Brakes 510 Technical data, description 511. Service brakes 520 Parking brake 60. Steering system and front axle 61. Steering system 610 Technical data, tools, description 611 Steering valve 612 Priority valve 613 Steering cylinder 614 Adjustment...
  • Page 14 Model Code Page 12. Repairs 6000-- 8750 8. 11. 1990 General instructions for repairs Outer oil seals The Service Manual contains instructions for changing all outer oil seals, (e.g. oil seals on the PTO shaft end, on the output shaft to the front wheel drive and on the pinion shaft on the powered front axle, and so on).
  • Page 15 Model Code Page 12. Repairs 6000-- 8750 8. 11. 1990 Handling of heavy components Cleanliness Unless otherwise specified, all removals should be accom- To ensure long life of a machine, it is important to keep dirt and plished using adjustable lifting equipment. All supporting foreign material out of its vital working components.
  • Page 16 Model Code Page 12. Repairs 6000-- 8750 8. 11. 1990 Correct and incorrect method of fitting and bending locking The main parts of lip ---type seal: tabs. 1. Case 2. Sealing element 3. Ring spring Slackening of nuts and bolts is prevented by mechanical The figure above shows the construction of a simple lip ---type means such as lockwashers, tab washers and cotter pins, or seal.
  • Page 17 Model Code Page 12. Repairs 6000-- 8750 8. 11. 1990 Table Table 1. Tightening torques, metric standard thread (ISO) Tightening torques Nm Dim. Quality, surface treatment, material and so on 10.9 12.9 lubr. tol.± tol± tol. ± lubr. tol. ± lubr tol.
  • Page 18 Model Code Page 12. Repairs 6000-- 8750 8. 11. 1990 Conversion table for common units Quantities and units Conversion factors Overall and detail dimensions millimetres (mm) 100 mm=3,94 inches 1 inch=25,4 mm Short distances e.g. turning circles metres (m) 1 m=3,28 ft 1 ft=0,305 m Travel distances kilometres 1 km=0,62 mile...
  • Page 19 https://www.truck-manuals.net/...
  • Page 20 Model Code Page 1. 1. 1994 13. Maintenance 6000-- 8750 15. 5. 1996 Maintenance Valmet 6000---8750 Greasing lubricating points fitted with N.B. Detailed maintenance instructions, see Operator’s Man- grease nipples ual. Always clean the grease nipples before applying the General grease gun.
  • Page 21 Model Code Page 15. 5. 1996 13. Maintenance 6000-- 8750 1. 4. 1997 Maintenance schedule 11 12 16 17 6084--- 67 Every 250 hours Daily/every 10 hours 1. Check engine oil level 12. Clean engine air filter 2. Check coolant level and radiator fins 13.
  • Page 22 Model Code Page 1. 4. 1997 13. Maintenance 6000-- 8750 1. 11. 1998 27 29 31 36 28 33 42 40 43 33 25 38 37 20 6084--- 68 Every 500 hours Every 2000 hours/every other year Clean water trap (fuel system) (on 6 ---cylinder engines. On the other models on the other side.
  • Page 23 Model Code Page 1. 8. 2000 13. Maintenance 6000-- 8950 1. 9. 2002 Recommended fuel and lubricants (all capacities are incl. of filters) Part of machine SAE ---grade API---grade Capacity (litres) Engine: --- 6100 (3---cyl.) CG 4 CG ---4 15W40 +40˚C 15W40 +40˚C...
  • Page 24 21. Engine 20. Engine 22. Fuel system 23. Cooling system https://www.truck-manuals.net/...
  • Page 25 https://www.truck-manuals.net/...

  • Page 26: Table Of Contents

    Model Code Page 15. 6. 1992 21. Engine 6000-- 8750 1. 9. 1992 Contents General (Op. no. 210): Specifications ..............Special tools .
  • Page 27 Model Code Page 15. 6. 1992 21. Engine 6000-- 8750 1. 9. 1992 D. Connecting rods, weight classes ..........E.

  • Page 28: Specifications

    Model Code Page 1. 8. 2000 21. Engine 6000-- 6800 1. 9. 2002 Specifications Engine designations 1. Basic markings: 320, 420, 620 and 634. The first digit indicates the number of cylinders and the two last digits the stroke (---20=120 mm, ---34=134 mm). 2.
  • Page 29 Model Code Page 1. 8. 2000 21. Engine 6800-- 8400 1. 9. 2002 Specifications Tractor 6800 6850 Hi 6900 8000 8050 8050 (L23517--- ) (--- L23317) (L23318--- ) Designation 420 DWRIE 420 DWRIE 620 DRE 620 D 620 DSR 620DSRE Turbocharger yes (+interc..) yes (+interc..)
  • Page 30 Model Code Page 1. 8. 2000 21. Engine 8450-- 8950 1. 9. 2002 Specifications Tractor 8450 8450E 8450 8450 Hi 8550 8550E 8550 (--- L24134) (L24135--- ) (--- L24115) (L24116--- ) Designation 620 DWR 620 DWR 620 DWRE 620DWRE 634 DSR 634 DSR 634DSRE Turbocharger...
  • Page 31 Model Code Page 1. 1. 1994 21. Engine 6000-- 8750 1. 8. 1998 Inside diameter of valve guide before fitting ......... . 9,000...9,015 mm Outside diameter of valve guide .
  • Page 32 Model Code Page 15. 5. 1996 21. Engine 6000-- 8750 1. 4. 1997 Pin bore in piston ..............40,003...40,009 mm Piston pin diameter .
  • Page 33 Model Code Page 8. 11. 1990 21. Engine 6000-- 8750 1. 9. 1992 --- 3. undersize 1,00 mm ............66,981...67,000 mm --- 4.
  • Page 34 Model Code Page 1. 1. 1994 21. Engine 6000-- 8750 1. 8. 1998 Timing marks: Timing marks on gears are in alignment when the 1st cylinder piston is at its top dead centre between compression and power strokes. On crankshaft gear .
  • Page 35 Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 1. 1. 1994 Lubricating system Oil pressure at normal running temperature: --- at idling speed (min.) ............100 kPa (1,0 kp/cm --- at running speed .
  • Page 36 Model Code Page 1. 6. 1999 21. Engine 6000-- 8950 1. 10. 1999 Balancing unit (420 engines) Tooth backlash: --- crankshaft ring gear ---balancer weight gear wheel ........0,1...0,3 mm --- between the balancer weights gear wheels .

  • Page 37: Special Tools

    Model Code Page 1. 1. 1994 21. Engine 6000-- 8750 1. 11. 1998 Special tools Order no Description 1 9051 73100 Puller for cylinder liner 2 9101 65600 Milling cutter for cylinder liner seat 3 9052 46400 Centring tool for flywheel housing 4 9052 46300 Drift for fitting rear crankshaft seal 5 9030 15200...
  • Page 38 Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 1. 11. 1998 https://www.truck-manuals.net/...

  • Page 39: Engine, Description

    Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 Engine, description The lower face of the flywheel housing functions as a sealing surface for the oil sump gasket. This means that the lower face of the cylinder block must be level with the flywheel housing. General When fitting the flywheel housing, its position is determined by tension pins.
  • Page 40 Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 Crank mechanism The crankshaft is forged from chrome alloy special steel and is induction hardened at the bearing and sealing surfaces. This makes it possible to grind bearings four times without a new heat treatment.
  • Page 41 Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 15. 5. 1993 Timing gears The timing gear train consists of hardened, helically cut gear wheels. The gears are encased by the timing gear casing which is fitted to the front of the engine. The timing gear drives the camshaft, fuel injection pump and oil pump.
  • Page 42 Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 Lubricating system (620-- engines) 1. Lubricating oil pump 2. Pressure ---relief valve 3. Oil filter 4. Turbocharger (not 8000 and 8100 tractors) 5. Main oil gallery 6. Oil pressure sensor Lubricating system The oil pressure relief valve is located under the oil filter on the The engine has a pressure lubricating system in which the oil...
  • Page 43 Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 Induction and exhaust sys- The filter system for the engine inlet air comprises a cyclone An electric service indicator is located in the filter body. This type precleaner, and a paper filter which acts as the main filter. sender lights a control lamp on the instrument panel when the The incoming air is made to rotate in the cyclone precleaner.
  • Page 44 Model Code Page 1. 4. 1997 21. Engine 6000-- 8950 1. 6. 1999 The picture above shows the air intake system of the 8400 tractor. 8400 has a turbocharged, 6---cylinder engine with an output of 140 hp (103 kW). The turbocharger type is Schwitzer S2B.
  • Page 45 Model Code Page 1. 8. 2000 21. Engine 6250-- 8950 1. 9. 2002 https://www.truck-manuals.net/...
  • Page 46 Model Code Page 1. 8. 2000 21. Engine 6200-- 8400 1. 9. 2002 https://www.truck-manuals.net/...
  • Page 47 https://www.truck-manuals.net/...

  • Page 48: Repair Instructions

    Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 Repair instructions 9051 73100 Cylinder block and flywheel housing (Op no 211) 1. Cylinder block and cylinder liners A. Measuring cylinder liner wear Note! Cylinder liner wear can be measured when the engine is attached to the tractor.

  • Page 49: Oversize Bushings For Camshaft

    Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 1. 1. 1994 0,1 ---0,4 mm 3. Press in a new bushing. Note the position of the oil hole. It is unnecessary to ream the bushing because it has a correct inner diameter when it is fitted in place.

  • Page 50: Fitting Plug At Rear End Of Camshaft

    Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 1. 1. 1994 134 mm 272 mm 6---7 mm Order no Hole diameter 1. 8363 24661 56,02...56,05 2. 8368 52460 55,42...55,45 Camshaft oversize bearing bushings for 420---engines. 3. 8368 52460 55,42...55,45 Numbering begins from the front end of the engine.

  • Page 51: Fitting Pipe For Oil Dipstick

    Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 G. Fitting pipe for oil dipstick 9101 65600 1. Clean the seat for the pipe. 2. Apply locking fluid Loctite 601 to the lower end of the pipe. 3. Tap the pipe in to the correct fitting height with tool 9025 95900.
  • Page 52 Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 6. If the cylinder liner height is too low, a liner with a higher flange is fitted. Order no Marking grooves +0,02 8266 47420 9,03 --- (norm) +0,02 8366 47933 9,08 9.

  • Page 53: Flywheel Housing

    Model Code Page 1. 4. 1997 21. Engine 6000-- 8950 1. 10. 1999 2. Flywheel housing 8360 20054 A. Fitting flywheel housing The flywheel housing is centred on the cylinder block by two tension pins. Even the flywheel housings which are delivered as spare parts have ready ---made holes for the pins.

  • Page 54: Changing Flywheel Starter Gear

    Model Code Page 1. 8. 1998 21. Engine 6000-- 8750 1. 11. 1998 C. Changing starter ring gear on flywheel Note! If a flywheel must be changed on the E ---engines, an If the ring gear is worn, change it with a new one. The ring gear injection timing mark must be made on a new flywheel as cannot be turned around because its teeth are chamfered and follows:...
  • Page 55 https://www.truck-manuals.net/...

  • Page 56: Cylinder Head And Valve Mechanism (Op No 212)

    Model Code Page 8. 11. 1990 21. Engine 6000-- 8750 1. 9. 1992 Cylinder head and valve 2. Compress the valve springs using lever 9101 66200. Re- mechanism (Op no 212) move the valve cotters, spring guide and spring. Remove the valves.

  • Page 57: Changing Valve Guides

    Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 1. 1. 1994 9101 65900 5. Measure the clearance between the valve stem and the 21 mm valve guide with a dial gauge. Lift the valve so that the valve head is 15 mm from the face of the cylinder head, and measure the clearance.

  • Page 58: Changing Valve Seat Inserts

    Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 1. 4. 1997 G. Grinding valves F. Changing valve seat inserts In order to ensure that there is a proper seal around the valves, Exhaust valves are fitted with separate valve seat inserts. If the there is a difference in the sealing surface angles.

  • Page 59: Fitting Cylinder Head

    Model Code Page 1. 8. 1998 21. Engine 6000-- 8750 1. 6. 1999 I. Fitting cylinder head 1. Measure the length of the cylinder head bolts. Compare with dimensions shown in figure below. Change too long bolts. max. 142 320, 620, 634 max.

  • Page 60: Valve Mechanism

    Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 2. Valve mechanism 60˚ A. Reconditioning rocker arm mechanism 1. Check the valve tappets, especially the contact surface against the camshaft. Worn or damaged tappets should be discarded. 5. Fit the plug to the other end of the rocker arm shaft. Lubri- cate the shaft and fit various parts in a correct order.
  • Page 61 Model Code Page 1. 1. 1995 21. Engine 6000-- 8750 15. 5. 1996 6. Crank the engine until the aligning marks on the idler gear 320 ---engines and camshaft gear are facing each other. Extract the cam- Check the valve clearances in the injection order of the en- shaft.

  • Page 62: Crank Mechanism (Op. No 213)

    Model Code Page 1. 9. 1992 21. Engine 6000-- 8750 1. 4. 1997 Crank mechanism (Op. no 3. Refit the bearing caps with new bearing shells and tighten them to the correct torque. Measure the I.D. with a dial gauge 213) which has been zeroed to the dimensions obtained in point 2.

  • Page 63: Changing Crankshaft Ring Gear (420

    Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 2. Fit the bearing shells into the cylinder block and the bearing 2. Clean the seat on the crankshaft with, for example, a wire caps. Ensure that the bearing shell clamping claws fit into their brush.

  • Page 64: Connecting Rods And Pistons

    Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 2. Connecting rods and pistons 3. If the piston pin bushing is worn, it should be driven out using a suitable drift. A. Removing pistons together with con- necting rods Note! Pistons and connecting rods can be removed from the 40,025...
  • Page 65 Model Code Page 21. Engine 6000-- 8750 1. 9. 1992 3. Check that the connecting rod is not twisted by positioning 5. Also check the S ---bending of the connecting rod by using the measuring tool with the horizontally placed measuring sliding calipers to measure the distance between the edge of points against the face of the fixture.
  • Page 66 Thank you very much for your reading. Please Click Here Then More Information. https://www.truck-manuals.net/...

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