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Alternator 120A, B207/Z18XE

Fig 1: Identifying Alternator 120A, B207/Z18XE
G05054182Courtesy of SAAB-SCANIA OF AMERICA, INC.
ALTERNATOR SPECIFICATIONS CHART

Type designation Bosch E6-14V 65-120A
Rated voltage V 14
Stator connection Delta connection
Slip ring diameter:
  • new
mm 15.4
  • min
mm 14.4
Max. permissible radial runout:
  • belt pulley
mm 0.2
  • slip rings
mm 0.02
  • rotor
mm 0.087
Min. brush length, from brush holder opening mm 7.5
Ratio crankshaft/generator belt pulleys B207:  1:2.75 (57 mm pulley)
Z18XE:  1:2.6 (54 mm pulley)
Test values 
Resistance, rotor winding Ohm 2.6
Resistance, stator between phases Ohm 0.040
Generator rpm/rated current at:
1800 rpm A 65
6000 rpm A 120