Service manual

G420F(FE) Service Manual Chapter 4. Engine Electrical System 136
4. Remove the nut, pulley and spacer.
5. Loosen 4 through bolts.
6. Separate the rotor and cover.
Inspection
Rotor
1. Inspect the rotor coil for continuity and check for
continuity between slip rings.
If resistance is too low, circuit is short and if the
resistance is too high, circuit is opened. So
replace the rotor assembly in both cases.
Resistance value 2.5 ~ 3.0 (20 )
2. Inspect the rotor coil ground and check continuity
between the slip ring and the core, If there is
continuity, replace the rotor assembly.