Last week, I installed a new AC Delco alternator in my 1997 XK8. But I could not bring myself to return the factory original alternator for a core...

I followed which was very detailed and very thorough, and it just so happens it appears to be nearly identical to these Jaguar alternators (except for the pins on the regulator.)

After disassembly and performing his rather straightforward tests, I discovered that the bridge rectifier had failed. (Photo of the components, except for the regulator, attached...)

I've got the rectifier, plus a new brush pair, on order for less than $40 total from Amazon, to arrive later this week; I will post the results after I finish the rebuild.

Cheers!

-Jim

 

Yep, I prefer OEM alternator refurbishment rather than replacement. Typically less costly and a guaranteed perfect fit back into the vehicle. Just be sure you get a genuine Denso refurbishment kit and not some Chinese knock-off....

 

If the warning light on the dash comes on however dim the diodes have failed ..check at night

 

Based on your comment, I canceled the Amazon order and ordered instead from alternatorbrush.com, which was the only place I could find that advertised a Denso rectifier... thank you for making this point.

 

Slightly off topic, but in the same ballpark is the AC Compressor. I recently rebuilt my compressor with a new clutch coil and seal kit, rather than spend big on a new one.
For a 25 year old unit, the internals were in pristine condition and it's now refitted and working perfectly, all for less than 100 bucks.

 

Well done....

 

Can I say that after 60000 miles you should certainly replace the brushes and or skim the slip rings. Bearings to take a bashing as it runs at 3 x engine speed. If the diodes are good and the regulator up to 14.3v then they are not usually changed.
I bought a New Denso for £120 and sold the old one for £60

 

New brushes and Denso rectifier arrived & installed today, just tested at the local parts shop, tested good.

This was a very simple job, and feels good to have a factory alternator as a ready spare.

Cheers!