Operation CHARM: Car repair manuals for everyone.

Alternator

Generator Specifications
Standard Voltage
Terminal Ignition Switch: ON Idle
At 20 degrees C (68 degrees F)
B B+ 14.1-14.7 V
L Approximately 1 V 13.0-14.0 V
S B+ 14.1-14.7 V
Current
Standard Current (Referance)
Measuring Conditions: Room Temperature (20 degrees C (68 degrees F)) Voltage: 13.5 V Engine: Hot
Engine Speed (RPM) Terminal B Current (A)
1,000 0-57
Must not be 0.
2,000 0-70
Must not be 0.
Rotor
Resistance
Measure between the slip rings.
2.4-2.9 Ohms
At 20 degrees C (68 degrees F)
Stator
Continuity
Measure between Stator coil leads.
There should be continuity
Brush
Standard 21.5 mm (0.846 in)
Minimum 8.0 mm (0.315 in)
Brush Spring
Standard Force 3.2-4.3 N (0.32-0.44 kgf, 0.71-0.96 lbf)
Minimum 1.8 N (0.18 kgf, 0.4 lbf)
Rectifier
Negative (Black) Positive (Red) Continuity
E P1 Yes
B P2 No
T P3 No
P1 E No
P2 B Yes
P3 T Yes