Alternator retaining strap Snapped

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andy f
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Alternator retaining strap Snapped

Post by andy f » Thu Jul 30, 2015 7:40 pm

Out in the bus this evening, got about a mile from home when heard the sound of the cooling fan on tinware. Pulled over check but wasn't expecting to find the Alternator retaining strap had broken.

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So the question is , Is it something I have done , can you fit them wrong ?

Thanks
Andy


scottish splitty
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Re: Alternator retaining strap Snapped

Post by scottish splitty » Thu Jul 30, 2015 7:58 pm

Hi
Don't think you can fit them wrong although it looks as though there has been a bit pressure on the strap were it snapped,probably were alternator sits on the stand.
I snapped two in quick succession recently,turned out to be the fan had elongated the mounting hole and the vibration snapped the straps,
needed a new fan in the end.
The chrome straps are poor quality,might be better with OEM one.

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type21f
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Re: Alternator retaining strap Snapped

Post by type21f » Thu Jul 30, 2015 8:21 pm

Interesting marking where it has snapped......
In theory.....the strap relies on the force along the strap being spread over the width and length of the strap. .
So if it had been bent at some time that would introduce a possible weak point and stress raiser. .
Looks like corrosion may have contributed and when tightened up causes local high stress at the bent area and corrosion weakens further..
You clamp to stop movement and eventually it gives way. ..

I think...
1965 Type21f
Westfalia Hamburg Type155i 003 viewtopic.php?f=8&t=64012
1965 Devon Caravette, L360 L289 Hammock, Tent, M W Pop
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Peebles 1964 Devon Caravette Gentlux Pop

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paulbugman
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Re: Alternator retaining strap Snapped

Post by paulbugman » Fri Jul 31, 2015 6:18 pm

is it a repro as looks like one

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type21f
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Re: Alternator retaining strap Snapped

Post by type21f » Fri Jul 31, 2015 6:30 pm

Interesting that it is black in places and not black in others.
Is this paint and no paint? fretted....or polished away by rubbing?

Maybe it has been loose for a while?
The nut looks to be damaged by tightening...

Sounds like you just need to find another and fit it carefully.!
1965 Type21f
Westfalia Hamburg Type155i 003 viewtopic.php?f=8&t=64012
1965 Devon Caravette, L360 L289 Hammock, Tent, M W Pop
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Peebles 1964 Devon Caravette Gentlux Pop

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andy f
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Re: Alternator retaining strap Snapped

Post by andy f » Fri Jul 31, 2015 8:22 pm

Well I have ordered 2 replacement ones, One OG from Custom and commercial and then a chaepy one to have just in case it happens again.
So a bit of history on this. about a month ago, we were on our way home after a motorway drive and there was an intermittent noise that on inspection was the fan on the tinware, and yeah the strap had become loose some how. So that would explain some bits I guess.

Hopefully the OEM one will be good and when fitted correctly last a time.

I did get home from work today and make one myself, just like the cheapy ones you get, But I have decided to wait for the OEM one.

Andy

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