Harv wrote:

Jastutte are you in the USA? I’ve tried ordering the rebuild kit for my Marelli from Maniac, but it won’t accept my Canadian address. I’ve tried emailing them but no reply. Does anyone know another source for these kits?

i am.

while i was waiting for the kit to arrive i did some searching for the Voltage Regulator and Brushes on Amazon. i couldn't find an exact match.

the Voltage Regulator W080-39 is listed as a John Deere part and works well in our Rovers. Both my P38 and my '01 Discovery are using the new VRs.

Wagner Alternator and Supplies stocks them in the US. not sure if they sell retail.

Edit: to be clear, the W080-39 is an exact match and direct replacement for the OE Bosch VR.

Thanks Jastute. Mine is GEMS so I think a different part number. Maniac sells the kit but I haven’t found it anywhere else.

That’s good to know for when I need todo the Disco’s

Hi,
I replaced my thor alternator ERR5834 (150amp) after brushes failed. The replacement was a cheap second hand unit.

Hoping to rebuild the alternator. Bearings found easily. Slip ring and regulator block (or just brushes) only seem to be available with expensive overseas shipping and the risk of duties (when it arrives in uk).

If I want to attach photos here, what hosting site is recommended?

I will try a local alternator shop tomorrow, but last time I spoke to them - they only wanted to supply and fit their recon/exchange. The pricing was way too high for a 'diy bodger' but would be a bargain for a genuine dealer fan boy.

Slip ring has a number 1238
Regulator block 1 197 311 549

Will update after speaking to local rewind shop, but its looking like I need to buy a refurb unit.

Just edited your post so the pictures show. No matter what hosting you use, as long as the file ends in .jpg, it will work.

In your case, the top picture is https://i.postimg.cc/25dMvmDM/20240401-200138.jpg, while the bottom one is https://i.postimg.cc/JzFZqB1B/20240401-195939.jpg

When typing your reply, put the cursor where you want the picture, click on the box with a picture in it (5th one along), paste the URL for the image into the pop up box that appears and click OK. That then puts the picture into the post. If you click on Preview, you can see what it will look like.

I did manage to find the slip rings and brushes somewhere on eBay awhile ago (I think they came from Ireland?) as they were the same as a different Bosch model.

I don't know if I still have all the information from when I did mine years ago, but I'll have a look and see if I made any notes.

Gilbertd wrote:

Just edited your post so the pictures show. No matter what hosting you use, as long as the file ends in .jpg, it will work.

In your case, the top picture is https://i.postimg.cc/25dMvmDM/20240401-200138.jpg, while the bottom one is https://i.postimg.cc/JzFZqB1B/20240401-195939.jpg

When typing your reply, put the cursor where you want the picture, click on the box with a picture in it (5th one along), paste the URL for the image into the pop up box that appears and click OK. That then puts the picture into the post. If you click on Preview, you can see what it will look like.

Thanks Gilbertd.
When using post image site, I must copy the "direct link". There are about six options, it's the direct link that I've used here.

Martyuk wrote:

I did manage to find the slip rings and brushes somewhere on eBay awhile ago (I think they came from Ireland?) as they were the same as a different Bosch model.

I don't know if I still have all the information from when I did mine years ago, but I'll have a look and see if I made any notes.

Many thanks Marty. I did see some slip rings with dimensions that could be close enough. No regulator blocks at reasonable prices. Could just replace brushes but there is some corrosion to the spot welded connections - hopefully I could solder the joints.

Kbs wrote:

When using post image site, I must copy the "direct link". There are about six options, it's the direct link that I've used here.

Yes, use the direct link option which should give you a link with .jpg at the end. Without that the forum software doesn't recognise it as a picture.

My local alternator repair shop, no longer repairs alternators. Still auto electrical but now just buys in complete units. It was about 30 years ago I last bought from them.

He did find me a slip ring and a regulator - so here we go for a rebuild....

Slip ring looks great. Regulator, I'm not so sure. I might look at extracting the brushes from the new reg and installing them in my old reg. May be fit the new reg and keep the old one safe for now.

http://sparksautoelectrical.co.uk/

Regulator currently on amazon and autodoc. <£10
HC-Cargo 134761 Alternator Regulator
Voltage: 14V
Article number: 134761
EAN: 2248198963202

I have not fitted and tested this yet, but looks ok could be from a lower powered alternator? May need to use brushes from this on the original bosch part. Cross references suggest this is not suitable. Some (cargo brand) of this part number do not have a visible resistor.

The brush holder is a little wider at end. Bit tight in rubber seal but probably ok.

Slip ring looks good.

Brush size 5.8mm x 3.8mm.
Guessing length to be (not more than) 22mm.
This brush holder has 10mm of brush exposed when slack.
ERR5834 150A BOSCH 4.6 Thor

Edit to remove bearing numbers. I still have one left over, so not sure what I fitted (but it was a standard bearing).

Now fitted and charging nicely, with a used spare in the boot (give it a couple of weeks before I trust it)