Charging System Check (21-SI 200 Generator)

Charging System Check (21-SI 200 Generator)

Tools Required
* J 39200 Digital Multimeter
* J 35590 Inductive Current Clamp

Using the Digital Multimeter

Caution: Refer to Battery Disconnect Caution in Cautions and Notices

1. Disconnect the negative battery cable. Refer to Negative Battery Cable in Battery Cable Replacement (Negative Cable to Engine) Battery Cable Replacement (Negative Cable to Engine)Battery Cable Replacement (Positive Cable) Service and RepairBattery Cable Replacement (Negative Cable to Frame) Battery Cable Replacement (Negative Cable to Frame).
2. Connect an ammeter in series between the BAT terminal of the generator and the output lead.
3. Connect the negative battery cable. Refer to Negative Battery Cable in Battery Cable Replacement (Negative Cable to Engine) Battery Cable Replacement (Negative Cable to Engine)Battery Cable Replacement (Positive Cable) Service and RepairBattery Cable Replacement (Negative Cable to Frame) Battery Cable Replacement (Negative Cable to Frame).
4. Start the engine.
5. Turn ON the following components:

* The radio
* The windshield wipers
* The headlamps (high beam)
* The blower motor (high speed)




6. Connect a carbon pile across the battery.
7. Operate the engine at 2500 RPM.

Important: Residual magnetism in the rotor causes the initial voltage buildup. Increase the engine speed as necessary in order to obtain the maximum current output.


8. Adjust the carbon pile as necessary in order to obtain the maximum current output.
9. If the ampere output is within 10 amperes of the rated output stamped on the generator frame, the generator functions properly.
10. If the ampere output is not within 10 amperes of the rated output stamped on the generator frame, repair the generator. Refer to Generator Overhaul (21-SI) Overhaul

Using the Inductive Current Clamp

1. Install the J 35590 .
2. Start the engine.
3. Turn ON the following components:

* The radio
* The windshield wipers
* The headlamps (high beam)
* The blower motor (high speed)




4. Connect a carbon pile across the battery.
5. Operate the engine at 2500 RPM.

Important: Residual magnetism in the rotor causes the initial voltage buildup. Increase the engine speed as necessary in order to obtain the maximum current output.


6. Adjust the carbon pile as necessary in order to obtain the maximum current output.
7. If the ampere output is within 10 amperes of the rated output stamped on the generator frame, the generator functions properly.
8. If the ampere output is not within 10 amperes of the rated output stamped on the generator frame, repair the generator. Refer to Generator Overhaul (21-SI) Overhaul.