V70: Suspension - How would the aux belt snap?

Norsetrx · Aug 9th, 2020, 12:29

A few days ago I noticed two bolts on the front subframe were loose (about 10mm of thread showing), no idea how but tightened them and checked the other side and they were missing!! Replaced these yesterday (pink circled ones) with the car on ramps. Got back in the car and no power steering and turned out the aux belt had snapped and sheared laterally rather than logitunally. Coincidence or not? Happy to admit to a schoolboy error...

The belt is only 10 months old and all pulleys appear to spin freely.

2009 V70 D5

Tatsfield · Aug 9th, 2020, 14:54

I suppose that we need ask what brand of belt it was that was fitted.

Norsetrx · Aug 9th, 2020, 15:31

Gates Micro-V®

Stu B · Aug 9th, 2020, 16:00

Yikes! Was the aux tensioner changed with the belt 10 months ago, and did it seize perhaps? I can't see how the belt snap would be related to the subframe bolts, so I'd say coincidence.

Any other damage?

Stu

Norsetrx · Aug 9th, 2020, 18:23

Yes, tensioner done with the belt in October 19 / 8000 miles ago. It isn't seized.

Simmy · Aug 9th, 2020, 18:39

was the belt a recognised make volvo gates continental ect or some other ? just so we know what to avoid ...

eternal optimist · Aug 9th, 2020, 20:26

Quote:

Originally Posted by Simmy

was the belt a recognised make volvo gates continental ect or some other ? just so we know what to avoid ...

See post 3. Gates.

Tatsfield · Aug 9th, 2020, 21:52

No matter what this turns out to be, you need to send the belt to Gates and get them to examine it for manufacturing faults. If all the pulleys are running smoothly and the tensioner is not seized, it is difficult to see why a good belt would snap like that.

griston64 · Aug 10th, 2020, 12:21

I take it you changed the belt and tensioner ? Not a garage

Norsetrx · Aug 10th, 2020, 13:47

Quote:

Originally Posted by griston64

I take it you changed the belt and tensioner ? Not a garage

Why do you assume that? It was done by a garage.

Aug 9th, 2020, 14:54	#2
Tatsfield Premier Member Last Online: Yesterday 11:04 Join Date: Nov 2015 Location: Poole	I suppose that we need ask what brand of belt it was that was fitted. __________________ 2012 XC70 SE Lux Polestar 230 bhp D5 Auto Oyster Grey

Aug 9th, 2020, 16:00	#4
Stu B Master Member Last Online: Yesterday 18:45 Join Date: May 2016 Location: Cheshire	Yikes! Was the aux tensioner changed with the belt 10 months ago, and did it seize perhaps? I can't see how the belt snap would be related to the subframe bolts, so I'd say coincidence. Any other damage? Stu __________________ 2017 V60 CC D4 AWD Polestar

Aug 9th, 2020, 21:52	#8
Tatsfield Premier Member Last Online: Yesterday 11:04 Join Date: Nov 2015 Location: Poole	No matter what this turns out to be, you need to send the belt to Gates and get them to examine it for manufacturing faults. If all the pulleys are running smoothly and the tensioner is not seized, it is difficult to see why a good belt would snap like that. __________________ 2012 XC70 SE Lux Polestar 230 bhp D5 Auto Oyster Grey

Aug 10th, 2020, 12:21	#9
griston64 Premier Member Last Online: Yesterday 22:10 Join Date: Jul 2012 Location: Lenzie	I take it you changed the belt and tensioner ? Not a garage __________________ V70 D5 SE Geartronic 215bhp Saville Grey 2012MY 940 LPT Manual 1996 740 SE 1990

Aug 9th, 2020, 15:31	#3
Norsetrx New Member Last Online: Aug 24th, 2020 17:12 Join Date: Sep 2019 Location: Polegate	Gates Micro-V®

Aug 9th, 2020, 18:23	#5
Norsetrx New Member Last Online: Aug 24th, 2020 17:12 Join Date: Sep 2019 Location: Polegate	Yes, tensioner done with the belt in October 19 / 8000 miles ago. It isn't seized.

Aug 9th, 2020, 18:39	#6
Simmy Premier Member Last Online: Yesterday 20:45 Join Date: Mar 2017 Location: Manchester	was the belt a recognised make volvo gates continental ect or some other ? just so we know what to avoid ...

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