Zetor 4320 Tractor Factory Service Repair Manual

ZETOR 3320-6340 TRACTOR WORKSHOP MANUAL

CONTENTS Paqe 1. Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Power train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 3. Final drive and rear axle .................................. 111 4. Front axle ............. ... ................................. 123 5. Front driving axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 6. Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 7 • Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .. . . . . . . . . . . . . . . . . . 16 5 8. Air brakes and dismantling of front Power Take-Off (P.T.O.) shaft control mechanism ................. . ......... 181 9. Hydraulic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 10. Tie rods and suspensions .......... ......................... 205 11. Electrical system .......................................... 221 12. Tractor body and structure ................................. 235 13 . Sea ts . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 3 14. Cab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7 15. Ballast weights . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 16. List of bearings, packing rings and service tools .......... 259 3

GENERAL INSTRUCTION FOR DISMANTLING AND RE-ASSEMBLING 1. Dismantling and re-assembling, including repairs, should always be carried out using suitable and high-grade tools or using our set of service tools, Part No. 70011 9100. 2. The parts pressed on or heat- assembled should be dismantled only by pressing or using a suitable mandrel. The contact surfaces of parts to be pressed in or shrink on should always be coated with oil properly. 3. Take care to re-assemble, as the case may be, all the disman - tled parts to their original pla- ces. It is especially important to follow this rule in the case of repeated use of the bearing needles and rollers. 4. Clean properly all the parts before assembly and coat their contact surfaces, and espe c ially the friction ones, by oil, grease or sealing compound. 5 . Make use of a vaseline having its thaw po i nt at least 60 °c to stick the bearing needles when being assembled . 6. Take special care when putting the GUFERO packing ring on the shaft . Check it for damage . It should be immersed into oil or coated by oil before assembling. Fill the ring inside with grease after assembling . 7. Paper gaskets , rubber and cork packings and seals, fuses, wires, r etaini ng rings, cotter pins and similar parts should be replaced by new ones . 8. Take care to fill up all the repaired groups (components) with oil or grease before putting into service. 5 9. When using a crane, check to be sure the crane lifting power and the loading capacities of ropes and suspensions are suf- ficient when compared with the load in question. Use an appro- priate lifting gear only. 10. Use suitable plugs to blind the open holes of parts or ends of pipelines disconnected. Insu- late the disconnected ends of electric wires and mark them un- less provided with numbering. 11. Depending on which of the tractor parts (sub- assemblies) is to be repaired: drain coolant, or oil, fro m the engine, or transmission, from the shock absorber, from the hydraulic system, or any other oil, or the hydraulic brake fluid, etc . Check to be sure the systems have been re-filled again after re-assembly.

1. 1.1. 1. 2. 1. 3. 1. 4. 1. 5. 1. 6. 1.7. 1.8. 1.9. 1.10. 1.11. 1.12. 1.13. 1.14. 1. 15. 1.16. ENGINE of engines turbocharger Performance data Dismantling of Cylinder head Water pump Clutch Crankcase Oil pump z 5201-7701 Heat exchanger and oil filtration Crank gear .... ••..•. Valve-gear mechanism ..••• Fuel system Compressor .... ••. Exhaust Air filter Cooling Coolant system heater 7 TURBO Page 9 12 13 16 18 22 26 33 34 39 43 53 54 55 56 58

1.1. PERFORMANCE DATA OF ENGINES Tractor Type Engine Type Engine arrangement Number of cylinders cylinder displacement [cm 3 ] cylinder bore x stroke [ mm] Rated speed [r.p.m.] Injection sequence Maximum high idle (overrunning speed), max. [r .p.m.] I.ow idle Compression ratio Power output on P.T.O. shaft at the engine rated speed and the shaft speed engaged for 540 r.p.m. Net power output at rated speed, as measured in accordance with ISO [kW] Maximum torque [Nm] Torque rise when compared with natural air intake [% ] Turbocharger Specific fuel consumption at the power output mentioned [g.kW.h- 1 ] Max: oil cons~£tion after 100 operating hours of engine [g.kW.h ] Oil pressure at engine rated speed and the temperature of 80 °c [ MPa] Minimum oil pressure at the speed of 700 r.p.m. and the temperature of 80 °c [ MPa] Valve gear type Oil pump Oil filter Fuel filter Injection pump type Governor type Injector type Nozzle type Opening pressure of injector [MPa] Injection advance angle [degrees] Cold engine valve lash [mm] Cooling system Dry engine weight, without accessories (kg) z 3320 z 3340 z 5201 z 4320 z 4340 z 6201 z 5320 z 5340 z 7201 z 6320 z 6340 z 7701 Z 6320 TURBO Z 6340 TURBO Z 7701 TURBO vertical, straight-type, four-stroke, water-cooled, DI 3 4 4 4 4 2696.5 3456 3595 3922 3922 102 x 110 100 x 110 102 x 110 102 x 120 102 x 120 2200 1-3-2 1-3-4-2 2410 700+50 600+50 700+50 31 39 33.1 41.8 251 249 two-stage P3M85Kle-3143 17 43 46.5 46 50 246 245 0.8 0.2 to 0.5 0. 05 52.5 58 16 HOLSET HlD 245 2.0 OHV with overhead valves Gear pump Centrifugal Single-stage PP4M85Kle-3144 PP4M85Kle-3145 9 PP4M91e-3137 P4M9le-3149 RV3M 350/1100-3303 RV3M 350/1100-3300 RV3M 350/1100-3309 342 VA 2685 DOP 160S 430-1436 18.6 - 0.8 25 + 1 inlet valves 0. 25 ± 0.05 exhaust valves 0.25 ± 0.05 force fluid cooling with by-pass 397 397 400 410

ENGINE Z 7201 - LONGITUDINAL SECTION 1 2 3 4 11 12 13 14 15 16 17 6 7 8 5 19 D 1 1. Thermostat 11. Injector 2. Water pump 12. Push rod 3. Inserted cylinder 13. Cam follower 4. Piston 14 . Cam shaft 5. Connecting rod 15. Flywheel with gear rim 6. Pulley 16. Travelling clutch disk 7. Crankshaft 17. output shaft clutch disk 8. Oil pump 18. Disk spring of clutch 9. Exhaust valve 19. Suction strainer 10. Inlet valve 10

ENGINE Z 7201 - CROSS SECTION U~IBZ.?:;-lt-~:__~~~~-4 1. Intake manifold 2. By-pass manifold 3. Centrifugal oil filter 4. Valve rocker arm 5. Exhaust manifold 11 5 6 7 8 9 10 6. Injection pipe 7. Injection pump 8. Compressor 9. Primary fuel filter 10. Secondary fuel filter D 2

Zetor 4320 Tractor Factory Service Repair Manual

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