'89 90HP EV - Stator and Rect/Reg bench testing - please point me to some posts

[bang4dabuck]

I'm doing this because something killed a new battery and a new tachometer. I have flywheel off. I assumed problem was Rectifier so I got a used 35 amp off Ebay. Should have got a new CDI 9 amp for a little more but too late. Any posts or advice on this situation ?

thanks

 

[AlTn]

Re: '89 90HP EV - Stator and Rect/Reg bench testing - please point me to some posts

Bang..look directly under this post at ..Similar Threads...there's a discussion there by Master Brian that may help you

 

[Faztbullet]

Re: '89 90HP EV - Stator and Rect/Reg bench testing - please point me to some posts

Bench testing
1. Diode plate check: Test the forward diodes between the two yellow wires and the red wire just like you would on a regular
rectifier. You should get a reading one way but not the other. Check the resistance from each of the yellow wires to case ground,
you should have a high reading, typically in the Meg ohm range. The red wire should not read to ground or show a very high reading, 25M
ohms or more.
2. Tachometer Circuit: Check the ohms resistance between the gray wire and engine ground. You should read approximately 10K
(10,000) ohms. Gray to red, and gray to the yellow wires should be a high reading, usually in the M range.
Thank you for using CDI Electronics