Re: [DMCForum] Re: Possible alternator trouble and more
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Re: [DMCForum] Re: Possible alternator trouble and more



I have a customer whose battery light kept coming on and his alternator
belt kept "coming loose" - turned out to be the water pump bearings. The
telltale was the really shiny crankshaft pulley where that belt passes.
The AC belt pulley was clean but not polished!

I also managed to snap my own alt belt by being a bit overzealous doing
it up. That's what happens when you do a rush last-minute job before a
big run (holiday to LeMans - 1000 miles or so over 3 days into France,
baking heat, lots of AC decided it really was time for the Ducey to go).
Luckily, took original alternator, spare belt and tools to swap it if
anything happened!

Martin
#1458
#4426


usndmc wrote:

>Mike and Chris,
>
>Upon having light and waiting for the engine to cool down so I could
>stick my hands in there, the belt had come considerably loose
>compared to how it was 3 days ago. I guess it was progessively
>working itself loose over the course of the month? Anyway, I
>tightened that again and indications are more normal. Although,
>after tightening the belt and running the engine and then shutting
>it down and looking at the belt again, the parts I can see now have
>a few places where some of the teeth are rather worn down. The belt
>was brand new when I put it on with the alternator a month ago. My
>water pump is still the original, could the pulley on that not be
>rotating as freely as it ought to and causing extra wear on the belt
>maybe? I'm still not sure how the high idle fits into all that
>though; I'll have to wait and see if it is still high tomorrow.
>Hopefully the belt retains proper tension now. Thanks for your
>timely advice guys!
>
>Dave -- still 18.5 years until I can be USNRET
>#5968
>




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