This time last year, I rebuilt both heads and replaced all belts and pulleys after one of the bolts behind the cam pulley vibrated its way into the cam pulley and did lots of damage...
Fast forward to a couple of days ago, the wife was driving my car and lost power steering. Stripped it down yesterday, both a/c and alternator belts had snapped and the groves on the plastic multi-v alternator idler pulley were destroyed (all round). Nothing had seized, all ancillaries and pulleys are free running with no play...there is no obvious cause.
The only thing I didn't change last year (as it was still fully functional), was the alternator damper assembly. I've not checked it yet but is there anything apart from this that could cause the belt to fail?
I was also careful, last year, to ensure I got the correct length of a/c belt as there's a 4PK1240 and a 4PK1218. My Allroad is a 2002 with an engine from a 2000 so I got the longer one (for use up to chassis number 4B-Z-3-090 000)
Fast forward to a couple of days ago, the wife was driving my car and lost power steering. Stripped it down yesterday, both a/c and alternator belts had snapped and the groves on the plastic multi-v alternator idler pulley were destroyed (all round). Nothing had seized, all ancillaries and pulleys are free running with no play...there is no obvious cause.
The only thing I didn't change last year (as it was still fully functional), was the alternator damper assembly. I've not checked it yet but is there anything apart from this that could cause the belt to fail?
I was also careful, last year, to ensure I got the correct length of a/c belt as there's a 4PK1240 and a 4PK1218. My Allroad is a 2002 with an engine from a 2000 so I got the longer one (for use up to chassis number 4B-Z-3-090 000)
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