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TechWriter's avatar
TechWriter
Explorer
Oct 31, 2015

If the Serpentine Belt Breaks, What Exactly Happens?

Took my DP in for its annual service visit and had to have my Cummins serpentine belt replaced because it was cracked. Which got me to wondering . . . what exactly would happen if the belt broke wh...
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Canadian_Rainbi's avatar
Canadian_Rainbi
Explorer
Nov 01, 2015
Tom/Barb wrote:
That depends upon what is being driven by the belt, usually the dash air quits, the engine water pump quits and the engine over heats.

OBTW, the belt may be cracked, but in no danger of breaking. most belts have a backing that is the belts strength, the rubber grooved portion it for traction over the pulleys.


Agree. Good plan on your part to change it. And keep the old one (or buy a new one) for a spare. HERE is what happened when ours broke in southern Mexico some years ago.

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