Quote:
Originally Posted by TeeMarkM
Hi,
The aircon pump belt on my 2009 V70 D5 [159,000 miles] has just snapped. Long story short, the auxiliary belt snapped and was replaced in anger at around 100,000M but it appears that the independent garage didn't replace both belts.
Question: In your opinion, could a professional successfully stretch on a new aircon belt without having to remove then refit/ tension the aux belt?
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No, the aux belt goes on a pully that is over the top of the aircon belt.
It's not a big deal, it is quicker to refit the aux belt than it is to fit the aircon belt.
HOWEVER, the bigger problem that you have is that you are leaving your belts way too long, to the point that they snap, which carries a HUGE risk of destroying the engine.
If your aux belt was last changed at 100k, then it is already overdue a replacement, so you need to get both belts and the tensioner replaced.
If you have already had 2 belts snap, then you have already used up all your luck. Its 50/50 whether a broken belt will get into the timing cover and destroy the engine