If the alternator was ever replaced it is most likely that the
pulley is not 100% correct.
Go to an auto parts store and ask to see the alternator pulley
for your vehicle – make a very close comparison to what is installed. I suggest
you take the new pulley to the vehicle or remove the existing one and take it
to the parts store. It sounds to me, with even wear, that the belt is either
too narrow or the pulley is slightly too wide – I would suspect the pulley.
Jeff
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of btilley@mchsi.com
Sent: Tuesday, July 14, 2009 11:24 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Off topic sort of
Yes these are the correct belts.
The damage for the most part is excessive wear all around
with the debris building up on engine parts then it snaps. This is why I have
been chasing the alt being overloaded or bound up. A couple of the early belt
were broken from the hose clamp being in the way cutting them. So I removed the
clamp and that stopped the cutting of them.
-------------- Original message from Jeff Whaley
<jwhaley@datacast.com>: --------------
Bob,
what does the belt look like when it’s damaged?
Is it
a clean break?
Has
it been worn in one location … or even wear all around?
I
broke a belt in my Mazda early installation … what happened was the belt jammed
in the alternator pulley, i.e., it went too far into the groove - it wore
down in one location and finally broke. My solution was to change the
alternator pulley and buy two matching belts.
Jeff