40 20-4
Tractors, 200 Series
Electrical System Charging system
SM-2 105 (Oct- 76)
REPAIR
C. Test the Alternator-Stator
Replacing Alternator-Stator
ler
8--Rectifier -Regulator
C--AC Voltmeter
Fig. 5-TestingI Alternator Stator
To test the alternator-stator, unplug the coupler (A) at the rectifier-regulator (B). Connect an AC voltmeter (C) across the AC terminals in the coupler as shown in Fig. 5. Run the engine at full throttle. Voltage reading should be at least 28 volts. If less than 28 volts, alternator-stator is defective.
D. Test Circuit Breaker
Fig. 7-Removing Alternator-Stator
If AC voltage test proved alternator-stator defective, replace it as follows: Remove blower housing and flywheel. Disconnect stator wires ( C ) from clip and 3-terminal coupler, Fig. 7. Remove four screws (A) securing stator (B) to bearing plate and remove stator. Reverse above procedure for installation.
A-Ohmmeter
B--Circuit Breaker
Fig. 6-Testing Circuit Breaker
To test for a defective circuit breaker (E), use an ohmmeter (A), Fig. 6. If an ohmmeter is used, a good circuit breaker will show zero resistance.
Litho in U.S.A.