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  #1   IP: 50.29.97.16
Old 06-23-2014, 12:08 PM
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Skywalker Skywalker is offline
 
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Alternator belt

Just and FYI.

I purchased a new alternator from MMI recently. I also bought the recommended larger belt, the 26 inch version.

With my mounting bracket, this belt was a little too long. Perhaps it works with the aftermarket bracket adjustment sold by MMI. The original belt was 25 inches, just a tad to small to get over the pulley.

I bought a 25.5 inch belt from my local auto parts guy, and it fits perfectly.

I know the site recommends the 26 inch belt, but on my early A 4 with the new 55 amp alternator, the 25.5 is the way to go.

FWIW

Skywalker
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  #2   IP: 71.241.131.82
Old 06-23-2014, 03:42 PM
AIM AIM is offline
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I had a similar situation with my alt. belt.

I felt the one that came with the boat was a little too long ( the tensioning bracket was maxed out) so I bought the next size down and I couldn't get it over the pulley.

I'll look into that 25 1/2. I didn't know they made one
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  #3   IP: 50.29.96.99
Old 06-23-2014, 04:02 PM
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I still had my scrap of paper with part numbers on it.

The 25.5 inch belt is Gates 7255, Dayco 15255, NAPA 7255 (i think)

Skywalker
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  #4   IP: 24.152.131.153
Old 06-23-2014, 09:22 PM
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ndutton ndutton is offline
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Quote:
Originally Posted by Skywalker View Post
With my mounting bracket, this belt was a little too long. Perhaps it works with the aftermarket bracket adjustment sold by MMI.
The MMI tensioner does not alter the belt fit in any way. It's a means of getting the proper tension, not too much and not too little.
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1977 Catalina 30
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prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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