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Have a tundra here with a trd supercharger and the serp belt keeps breaking? All toyota fatory parts. Truck has 190000 miles on it pulleys all lined ok? anyone heard of this before, or know any fixes? Thanks for any responses!!
 

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Any accessory with higher then normal draw could cause the belts to break. Make sure you are warming up the vehicle sufficiently if cold. The power steering pump can cause a lot of draw when cold. I would also check to see if all pulleys are turning freely (including the supercharger, may have a bearing going out causing high loads) & make sure the belt tensioner has enough tension. A lack in tension and slippage can also cause a belt to heat and break.

~JH
 
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