The alternator on my truck ( 81 D150 ) is the original one. It is still charging , but I would like to open it up , inspect it , and change the brushes and such. I took all of the bolts out ,but can not open it.
I am guessing I have to take the pulley off. My question is , how do I take it off , there is nothing on the pulley for a bit or a socket to fit .
(Alternator 4091563)

Thanks for any replies
Dave

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81 Dodge D150
It looked easier in the book .

You will need the special tool for removing the pulley

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Part of Tyrde-Browne Racing

You can borrow the tool from Advance, Oreilly and Autozone. I know that Advance has a relatively inexpensive one that works well.

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66 Barracuda 225 auto

Thanks for your reply , I have just came back from outside, and I have finally got it apart.
Nothing was holding it from coming apart ,except years.
What are the main things I need to replace for more years of service?

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81 Dodge D150
It looked easier in the book .

Yes, you'd need a special puller to remove the pulley, but you needn't remove the pulley to open the alternator and replace the brushes. For that matter, you needn't remove anything but the brushes to replace the brushes. There are two brushes, each held onto the alternator's rear housing by a single screw accessible from the outside with the alternator assembled.

The only thing you can't access if you leave the pulley on is the front bearing. Everything else is readily accessible by removing the three through-bolts and the two brushes, then prying the rear housing off the front housing.

Edit: I see you got it apart. OK...look at the copper slip rings and make sure they're not too heavily grooved. Clean them with alcohol and a rag. Put some wheel bearing grease and a dash of powdered graphite in the rear bearing. Reinstall the rear housing and replace the brushes. Assuming the diodes are in good condition, and there's nothing the matter with the bearings, it'll keep going for a good while yet.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks Dan,
The bottom copper ring has little groves in it and so does the brush.
Would it be a good idea to get a real fine grit sandpaper and sand it a little .
I wanted to open it up and take a look , and get some electrical cleaner spray at it, to get the dust and all off of it.
Thanks
Dave

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81 Dodge D150
It looked easier in the book .

Not to hijack but is there a good source online for brushes?

Thanks

TopHat

Hi TopHat

For what I read , Echlin and Standard are good
You can order the Echlin at Napa stores

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81 Dodge D150
It looked easier in the book .

Light grooving is no problem — you want to inspect for deep gouges or scarring. Usually you won't find any. Just cleaning up the rings with an alcohol-soaked rag will do fine.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Well I got everything put on except for the front bearing.
It looks like the pulley and shaft come out together.I cant see how I can use a puller on it.
What I tried to do is , I took a bottle jack and a piece of 3" pvc pipe(about 6" long) ,and I put the pipe over the pulley and tried to use the jack as a press.
I used it under my father in laws tractor , but I think I need something firmer than the ground , although I placed the jack on a block it still sank in the ground some when jacking it up. It moved just a little bit (made a popping sound , hopefully that is good.)I think ill take it to work and use the concrete floor.
Is this a good way to try to get the pulley off , I dont have a press?
If not please give me some suggestions.
Thanks

Dave