alternator identification

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itchyfeet
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alternator identification

Post by itchyfeet »

My van has a non standard lucas alternator
in an attempt to get the right bosch one i have purchased and aquired three second hand ones, one is early spade connection type labeled 65A so no use the other two are late stud type have no lables

I was told the left hand one came off a 2.1 and its bigger so i assume its a 90A Bosch and the right hand one is a 65A Bosch

can anyone confirm?
they both have different pulley offsets to mine also :?

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CovKid
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Re: alternator identification

Post by CovKid »

Well you can butcher the wiring to accept the spade. Mine (if I remember rightly) originally had a plug for the alternator but I cut this off entirely and fitted a golf 90amp alternator which had a spade and bolt connection. If you can get the pulley to line up when its bolted in situ and all connections match, you're away. I think I had to bend alternator adjustment bracket slightly but that was all. Hard to say what you've got there. There are quite a few that are similar. In some instances you can just change the pulley and it sorts itself out. The one on the right looks the right one to me.
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Re: alternator identification

Post by California Dreamin »

Can't give you any 'definite's' but can confirm that studded (later Bosch) alternators fitted to our vans could be either 65 or 90amp. I would also agree that a slightly longer body is likely to suggest it's a 90amp unit.
If the alternator had it's original sticker it would have been pink/red colour on a 90.
Make sure the pulley is correctly aligned when mounted.

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itchyfeet
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Re: alternator identification

Post by itchyfeet »

Thanks
Was a bit of a mong and didnt notice the pulley offset was out, ran the left one for a month or so and the bearings are now shot :oops:

think im going to have the left one rebuilt as it looks to be the 90A
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Re: alternator identification

Post by ghost123uk »

itchyfeet wrote: think im going to have the left one rebuilt

If it's not urgent, DIY it, easy enough and the bearings are readily available.
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Re: alternator identification

Post by CovKid »

They are indeed, I'm about to rebuild an alternator and a starter motor at the weekend. Mostly its brushes/regulators with these things but you can definately get new bearings or bushes if needed. Works out a fraction of cost of a recon and you'd be anazed how many just want a good clean to put them back into serviceable condition. Solenoids you just replace unless its a simple problem.
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Re: alternator identification

Post by ghost123uk »

I get used to changing bearings. Some of my high performance model aero engines need them doing at least once per season :roll: (28,000 rpm 8) )
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Re: alternator identification

Post by itchyfeet »

Well I took the older spade one appart to see if it was easy and I'm now stumped as to how I get the rotor off the front casin

I tried to undo the pulley bolt of the 90A one and can't get it off

So like you John I may just pay somebody else to do it its £60
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Re: alternator identification

Post by ghost123uk »

Aye, I have just remembered the hassle I once had with getting the pulley off an alternator. It was glowing red and getting walloped by a big hammer before it parted company with the shaft !
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Re: alternator identification

Post by itchyfeet »

So i took it in this afternoon, real old school place on a farm, not even a sign up, scruffy bloke alternators and starters everywhere :D
Had a good chat and hes going to take it appart and let me know

he said bearings need pressing off not walloping with a big hammer :oops:

i'm still going to have a go with some of the other alternators i aquired but i want one thats done professionally :ok
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Re: alternator identification

Post by what2do »

he said bearings need pressing off not walloping with a big hammer :oops:

Any 'farmer' could've told you that. Tonnes of hydraulic presses on eBay, cheap as you like.
Why would the glass be anything other than half full?

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itchyfeet
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Re: alternator identification

Post by itchyfeet »

If only id thought of googling images of 90a bosch alternator and 65a bosch alternator
it confirms the origional pic is 90a on the left 65a on the right :lol:
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