CHARGING SYSTEM — Alternator — Service Data and Specifications (S.D.S.)
EL-39spec tableUnverifiedBosch 12V/65A alternator, negative ground. Regulated output 14.1-14.7 V — useful field reference for charging-fault diagnosis. 'Minimum revolution under no-load' shown as two numbers (1050 max. / 1000) — likely 'spec' / 'limit' but unlabelled in source.
Service Data and Specifications (S.D.S.) — ALTERNATOR
Manufacturer
Unit
BoschBosch
Nominal rating
UnitV-A
Bosch12 - 65
Ground polarity
Unit
BoschNegative
Minimum revolution under no-load (when 14-volts is applied)
Unitrpm
Bosch1050 max. 1000
Hot output current
UnitA/rpm
Bosch65/5000
Regulated output voltage
UnitV
Bosch14.1 - 14.7
Minimum length of brush
Unitmm (in.)
Bosch10 (0.39)
Brush spring pressure
UnitN (g, oz)
Bosch1.9 (194, 6.84)
Slip ring outer diameter
Unitmm (in.)
Bosch15.3 (0.602)
