8 replies to this topic

[JonnyAlpha]

So I have a spare alternator that I stripped off of a Metro and thought I'd have a go at refurbishing it for my new engine build.

 

It was quite tatty to start with:

 

 

 

Managed to get it apart:

 

 

 

 

 

Only problem was that one of the long thin bolts that hold the case together snapped off :-(

 

 

Then after soaking some of the steel parts in citric acid and wire wheeling the aluminium parts, I started to clean it up:

 

 

 

 

Still needed to do the outer coil and electrics:

 

 

 

Gently held in the vice:

 

 

 

And here it is after cleaning up with Bright Spark contact cleaner:

 

 

I'll probably spray the metal core of the outer coil with black plasticoat.

 

Cleaned up the other steel parts but they need another soaking in the acid solution:

 

 

Just got to sort out the snapped bolt:

 

 

More to follow.

 

 

[MatthewsDad]

It's nice to see original parts being refurbished and re-used rather than scrapped.

[MacGyver]

Nice one! ?
You could weld a bolt to the end of that...

Ben

[blacktulip]

Great stuff. I hope it works afterwards

[andyapanel]

Brilliant. My wife is threatening to isolate me in the garage if I show symptoms; I have several alternators that need TLC. Sorted.

[panky]

I did one a few months back for my Commer camper, basically the same unit. A rewarding little project and you can get overhaul kits cheap (less than £20) off ebay. They include bearings, regulator slip ring and brushes. 

I had the same broken stud issue, and managed to knacker the end plate up completely trying to get it out, but found a new old stock one for less than a tenner - lucky me

[JonnyAlpha]

Hi;

Just resurrecting and updating this project.

I have had the pulley and fan in citric acid to remove the underlying rust, the problem is, with the current crisis I had forgotten they were in the. The fan has cleaned up nice but was quite pitted, but the the pulley (the encapsulated nut / spacer), seems to have disintegrated and needs replacing.

These were the parts in question before clean up:




And this is the fan now.

 

 

I will post up a pic of the nut / spacer later as I seem to have forgotten to take one.

 

UPDATE

 

Here's the pulley with the encapsulated nut, as you can see it got pretty mashed up:

 

The Alternator was labeled as a Lucas LRA100 23802. I have been advised that this is an ACR115 with a 15mm shaft.

When you look for pulleys on eBay they usually come with a Fan (all for about £10), so looks like it will be getting a new fan? I am tempted to replace the electrics too, but may just put it together first and see if it works.


The only thing I need to check is that, as seen in the pic above, the pulley on mine has an integrated hexagonal nut on the back of it (its the inside of this that is damaged), in the pics of the ones on eBay there appear to be two different types:

 

One with what looks like a separate spacer instead of an encapsulated nut:
 

This one.

And another with what looks like a separate spacer / nut

This one.

I also remember finding this during the clean up and not knowing what is was:

 

Is it from the alternator or my transfer case? 

 

Thoughts?

Edited by JonnyAlpha, 10 April 2020 - 08:49 PM.

[JonnyAlpha]

So I ended up ordering a replacement fan and pulley for the Alternator. The fan seems fine but the pulley is distinctly thinner.

Here is a pic of a ruler balanced across both to show the difference:

 

 

And a mock up on the Alternator itself, to show that the the pulley centre will be in a different line to the original.

 

 

I guess until the Alternator is fitted to the block and the water pump and fan is in place I won't really know what the impact is and what to do about it. All I know is that everything will need to be in line.

 

Any thoughts?

[MacGyver]

Big washer? ?

And the o ring is for the gearbox like in this thread/picture from Project_1275_GT: http://www.theminifo...ttach_id=207081

Edited by MacGyver, 17 May 2020 - 11:18 AM.