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aux belt failure x5 40d
Posted: Wed Dec 21, 2022 5:01 pm
by mr angry
2010 X5 40D
Started car this afternoon and went to drive away and felt/heard a thud. Noticed loss of power steering so had a peek under the bonnet to see that the aux belt had come off. Due to it getting dark I just parked it up after a cursory look. It is not easy to see the idlers and tensioner from the top, but could see that the crank pulley looked to be intact and still in place.
Had a quick look online for an aux belt kit with idlers and tensioner but struggling to find any. Also struggling to find any posts relating to such a failure on this engine. Has anyone experienced this issue and /or purchased a new aux belt kit?
aux belt failure x5 40d
Posted: Wed Dec 21, 2022 5:26 pm
by X5Sport
Not seen such yet. The only value kit shown is for cars with adaptive suspension. What the actual difference is I can’t see from the RealOEM data.
The good book suggests you need to get the electric fan & cowl off and there’s a special tool (a long steel pin) that has to be inserted in the tensioner to get it out of the way (by rotating the pulley below it clockwise thereby increasing the spring loading on it) and for some slack before fitting a replacement belt.
It doesn’t look difficult but there’s very little room to play with. It might be possible to get into the gap without removing the fan cowl.
- 94973121-8A05-437C-BF44-DBFE65060835.jpeg (103.01 KiB) Viewed 5399 times
Image for X6 with the same engine.
aux belt failure x5 40d
Posted: Wed Dec 21, 2022 5:53 pm
by Leslie
Did it have the recall for the bolt on a tensioner that could shear off ?
aux belt failure x5 40d
Posted: Wed Dec 21, 2022 6:09 pm
by mr angry
Had a look online and this only seemed to be for M57 engine
aux belt failure x5 40d
Posted: Wed Dec 21, 2022 6:10 pm
by mr angry
X5Sport wrote: Wed Dec 21, 2022 5:26 pm
Not seen such yet. The only value kit shown is for cars with adaptive suspension. What the actual difference is I can’t see from the RealOEM data.
The good book suggests you need to get the electric fan & cowl off and there’s a special tool (a long steel pin) that has to be inserted in the tensioner to get it out of the way (by rotating the pulley below it clockwise thereby increasing the spring loading on it) and for some slack before fitting a replacement belt.
It doesn’t look difficult but there’s very little room to play with. It might be possible to get into the gap without removing the fan cowl.
94973121-8A05-437C-BF44-DBFE65060835.jpeg
Image for X6 with the same engine.
Seems odd it only lists cars with adaptive suspension
aux belt failure x5 40d
Posted: Wed Dec 21, 2022 7:28 pm
by X5Sport
Sorry I meant Adaptive Drive (which I think is the same thing), and I still would expect a kit for those without. Perhaps there’s a hard service interval for that variant - not that it’s mentioned. The belt’s the same!
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 2:33 pm
by mr angry
Just had a look and lower crank pulley has failed. Looking at eurocarparts they want £499…wtf
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 4:20 pm
by sapphireblack
Blimey, wounded rhino time it seems, commiserations.
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 5:13 pm
by Leslie
Damn is it gold plated
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 9:54 pm
by mr angry
- BC0FB37D-40CA-4A43-93CC-D7D858927C10.jpeg (118.55 KiB) Viewed 5298 times
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 10:17 pm
by sapphireblack
I confess I'm not sure exactly what those images depict but it sure looks broken
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 10:22 pm
by mr angry
Its basically the crankshaft pulley which has split into two parts where the rubber joining them has deteriorated, split then separated.
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 10:45 pm
by sapphireblack
And that item is basically £500 ? Life is increasingly a pi$$ take in so many ways, with so many ways to be ripped off.
Hell, I'll be joining all the strikers soon
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 10:51 pm
by mr angry
I managed to find one on ebay for £200 but the seller uses royal mail who are striking. Guess the car will be off the road til next year
aux belt failure x5 40d
Posted: Thu Dec 22, 2022 10:54 pm
by sapphireblack
Saving £300 is probably worth a bit of inconvenience
