TM 5-3805-281-24-2
Robert Bosch Alternator Repair
30
TESTING ROTOR FOR SHORT CIRCUIT
10
6
With a test lamp:
Test lamp must light brightly.
With an ohmmeter:
Ohmmeter indication must be between 4.0 and 4.4 ohms.
If test fails, replace rotor.
RG,RG34710,2153
1915MAR971/1
TESTING ROTOR FOR GROUND
Use an ohmmeter to test for continuity.
Attach ohmmeter to rotor and each slip ring.
Replace rotor if test shows continuity.
RG,RG34710,2154
1915MAR971/1
TESTING SLIP RINGS AND ROTOR SHAFT
FOR RADIAL RUNOUT
Maximum radial runout of slip rings: 0.03 mm (0.0012 in.)
Maximum radial runout of rotor shaft: 0.05 mm (0.002 in.)
A--Rotor Shaft Test Point
RG,RG34710,2155
1915MAR971/1