Valtra 6850 - Electrical Equipment for Engine

144
Model Code Page
31. Tractor electrical system
6000--8750 310 4
15. 5. 1996
15. 6. 1992
Electrical equipment for engine
Starter motor Magneti Marelli (Lucas) M 127/2,8 12 V
Spare part no 8353 31592
Test values, unloaded:
--- s p e e d 5500---8000 r/min max........................................................................
--- current consumption 115 A...........................................................
--- v o l t a g e 11 V.......................................................................
Test values, loaded:
--- s p e e d 1000 r/min........................................................................
--- current consumption 670 A...........................................................
--- t o r q u e 20,8 Nm.......................................................................
--- v o l t a g e 8,0 V.......................................................................
Locked rotor:
--- s p e e d 0r/min........................................................................
--- current consumption 1160 A...........................................................
--- t o r q u e 45,4 Nm.......................................................................
--- v o l t a g e 5,0 V.......................................................................
Brush spring pressure (new brush) 11,6---15,5 N.................................................
Min. brush length 8mm................................................................
Commutator, min. diameter 38 mm........................................................
Note! Tractors 8050---8750 have starter motor ISK RA 12 V 3,6 kW (F2858---). Mezzo---tractors which have Bosch
in---line fuel injection pump, have a new starter motor ISKRA12V3,1kW(6000---6800: F3792---),
(8000---8400: F3818---).
Alternator Magneti Marelli (Lucas) A127---65
Spare part no 8366 40128 (6100---6600)
Spare part no 8353 39304 (8000, 8100)
Nominal voltage 12 V.................................................................
Max. current 6000 r/min 65 A...........................................................
Earth minus (---)..........................................................................
Max permissible speed 15000 r/min...........................................................
Brush length, new brush 17 mm..........................................................
Min. brush length 5mm................................................................
Brush spring pressure 1,3 ---2,7 N............................................................
Stator, no of poles 12...............................................................
Stator, no of phases 3..............................................................
Stator resistance 18 ohm.................................................................
Rotor resistance 2,9 ohm.................................................................
Control voltage 13,4 V..................................................................
Nut for belt pulley, tightening torque 50 Nm................................................
Note! Tractors 8050---8750 have alternator ISKRA 95 A 12 V, 1,28 kW.