zetor

ESSENTIAL TECHNICAL PARAMETERSTechnical specifications of engines of tractors Z 6421 - Z 8441Type of engine 7205 1105 1205Valve gearOHVOil cleanerfull-flow, disposableFuel cleanersingle-stage with replaceable cartridgeType of injection pump PP 4M 10P1i 3782 PP 4M 10P1i 3781 PP 4M 10P1i 3780Type of nozzles DOP150S428-4104 DOP150S428-4104 DOP150S428-4104Injectors opening pressure MPa 25-0.8Angle of injections advance ° 12Valve play of cold engine:− inlet valve− exhaust valvemmmm0.25±0.050.25±0.050.25±0.050.25±0.050.25±0.050.25±0.05MAX. PERMITTED LOADING OF THE FRONT AXLE CARARRO 20.16 Z 6441, Z 7441, Z 8441 (KG)Travel speedWheel track (mm)km.h -1 1,525 1,610 – 1,620 1,680 – 1,690 1,760 – 1,770 1,825 – 1,8358 4,000 4,000 4,000 3,800 3,60020 3,000 3,000 3,000 2,800 2,60030 3,000 3,000 3,000 2,800 2,60040 2,500 2,500 2,500 2,500 2,500Note:Loading is applicable with regard to the axle itself; the permissible loading with regard to tyres is given in the tab. “Loadcarryingcapacity of front tyres”.35