...altenator packed up, so I thought it was a failed battery. Repalced old battery with a Bosch Silver 64Ah 640A - nearest match to the old one. That promptly went flat, then I suspected the altenator. Sure enough, it's had it's day - not charging at any speed. Bought a new (2nd hand) altenator from AndyZ on Friday. Fitted it, and this ones registers about 13 volt when the engines' running.

 

So, now, I've a faint red glow on the battery warning light that increases with speed. Question is, do I suspect the 2nd hand altenator, or have I bought a battery that's ''too big'' for the altenator?

 

...any thoughts would be welcome.

 

Thanks in advance

 

Jack

Battery "too big" theory doesn't work. It must be the altenator or a fault somewhere else - like the connection perhaps.

Andy - thanks for the prompt reply ...any idea about how to check the altenator? I've dismantled the non-working altenator and you can easily see that it's one of the carbon contacts thats excessively worn. Should I do the same with the new second-hand unit? ..it was a nightmare to fit - I don't relish the thought...

Voltage regulator I think, best to have it checked by auto electrician who will bench test...if repairable it would be the cheapest option..

Haven't taken one of those alternators apart, but you may be able to dismantle them both to make one good one, if you can get the voltage reg off the old and put it on the new. However, like splatt says, an auto electrician would probably be your best bet, or one of those places that specialises in alternator rebuilds.

...took your advice, just called one and he says about £20. I'll take it in and see what happens.

 

thanks again.

 

cheerz

 

Jack