Stator: Testing and Inspection

Checking Bosch Alternator in Electric Test





- Check with a BMW Service Tester.

Rotor Coil Break and Shorted Turn Test:

- Hold test leads for resistance tests on slip rings.

Alternator 80 A = 2.8 ohms +/- 10%
65 A = 3.4 ohms +/- 10%
90 A = 2.9 ohms +/- 10%
115 A = 2.65 ohms +/- 10%
140 A = 2.65 ohms +/- 10%





Rotor Coil Ground Contact Test:

- Hold test leads for resistance tests on slip ring and rotor shaft.
- Nominal value: infinite display 999 k-ohms.