V70 R clunk when engaging drive

**Pauld** · Thursday 27th October 2011, 16:27

My R has developed a clunk she going into drive, or reverse.

I sounds as if it is coming from the front off side wheel hub.

Any suggestions?

Thanks

**LiamT4** · Thursday 27th October 2011, 20:33

Engine mount? My old audi did something similar, garage fitted a new mount and it went away.

**burchi** · Friday 28th October 2011, 00:07

Sounds like "axle ping". Where the loctite for bolts in the wheel hubs is not so strong.

Resolution is to get XC90 axle bolts as these have rubber grommets on them that set a firm seal against the hub and getting rid of the noise.

Hope this helps

**volvokid** · Friday 28th October 2011, 00:09

Originally Posted by burchi

Sounds like "axle ping". Where the loctite for bolts in the wheel hubs is not so strong.

Resolution is to get XC90 axle bolts as these have rubber grommets on them that set a firm seal against the hub and getting rid of the noise.

Hope this helps

Have you got a PN for these my dealer is refusing to fit these????

**volvokid** · Friday 28th October 2011, 00:49

Originally Posted by burchi

Sounds like "axle ping". Where the loctite for bolts in the wheel hubs is not so strong.

Resolution is to get XC90 axle bolts as these have rubber grommets on them that set a firm seal against the hub and getting rid of the noise.

Hope this helps

Think this is what happened in my C70, Volvo just re loctited the bolts

**Nick0** · Saturday 29th October 2011, 10:56

Originally Posted by volvokid

Have you got a PN for these my dealer is refusing to fit these????

part number is 30714142

**SomeBloke** · Sunday 30th October 2011, 07:45

As a matter of interest for us with AWD, do we need to fit these to the rear as well?

**M-R-P** · Sunday 30th October 2011, 08:44

Had a clonk from front o/s when changing gear, thought it was the cv till I found it was the hub bolt, or lack of it! It's too long to just fall out (nowhere for it to go), looks like plod forgot to put it in at some point

All sorted now tho

**LeeT5** · Monday 31st October 2011, 01:01

Common fault. They all work loose. Remedy is to replace with XC90 bolts. Martyn i am not sure why your dealer is refusing to fit, its actaully the correct modification to cure axle ping!! Some dealers really are thick! they should read their TNNs once in a while and they might learn something.

Make sure you torque the new XC90 bolts to 50Nm not the original 35Nm.

**volvokid** · Monday 31st October 2011, 01:15

Originally Posted by LeeT5

Common fault. They all work loose. Remedy is to replace with XC90 bolts. Martyn i am not sure why your dealer is refusing to fit, its actaully the correct modification to cure axle ping!! Some dealers really are thick! they should read their TNNs once in a while and they might learn something.

Make sure you torque the new XC90 bolts to 50Nm not the original 35Nm.

TBH I dont think they really knew what i ment. Gonna get it sorted out

**M-R-P** · Monday 31st October 2011, 19:20

If they can't plug it into a laptop or poke it with a stick, they don't wanna know nowerdays. When I had my DIM changed (grrrr) they did a "health check" and found £800 worth of problems but didn't mention my sticky w/g or blocked PCV! tossers.

**pwcov** · Saturday 5th November 2011, 23:00

Please , what do these bolts connect to , is there a diagramme anywhere.

**M-R-P** · Saturday 5th November 2011, 23:12

Originally Posted by pwcov

Please , what do these bolts connect to , is there a diagramme anywhere.

You mean the hub bolt?

Bang in the middle of the hub (12mm head - I think) about 90mm long. It pulls the C/V into the hub and has a nasty habit of working loose.

**pwcov** · Sunday 6th November 2011, 19:29

Thanks for that Martin. Note from the service history from last owner that these where checked and greased? Think XC90 bolts will be the next thing on my list.

Pete W.

**M-R-P** · Sunday 6th November 2011, 20:14

TBH, I don't have XC bolts, but I do have the wheels off quite a bit (big 10 and all that) so I torque them up alot. I can see how they'd work loose and how XC bolts would help.

**Nick0** · Sunday 6th November 2011, 20:29

Originally Posted by SomeBloke

As a matter of interest for us with AWD, do we need to fit these to the rear as well?

No, front wheels only. Pop out the centre cap on the wheel and undo the existing bolt (make sure the female thread is clean) and replace with the XC90 bolt, about as simple as you can get. Takes all of 10 minutes each side.

**daza-b** · Sunday 6th November 2011, 21:16

hi there when i was working with auto gearboxes there was a few reasons, one being the mounts, next being the clutches inside the gearbox are worn, even could go down to being the torque converter, maybe try changing your gearbox fluid (ATF) see if that helps

**wegal** · Tuesday 8th November 2011, 13:02

Hub bolts frist and the correct repair is to use XC90 ones as mentioned. Mine where done under warrenty at volvo and they put the XC90s in.

Then look at the AFT fluid, I just had mine flushed and replaced.. cost £75.60 in fluid and £25 labour. You need 4 litres of fluid ( 2 to flush and 2 to replace) the gear change is much smoother. After that try the software up-dates for the gear box.

After that... well just accept its part of the car cos anything else will be very expensive.

**LeeT5** · Sunday 13th November 2011, 02:31

Have you sorted the Clunk noise yet??

Assume your car is an auto? If it's a clunk or clonk noise then it won't be the Hub bolt nor axle ping. It's more lightly to be engine mounting related due to the engine rocking lightly backwards or forwards when you select gear. Check your 'lower transmission mount'. They are sh i te!! The small bush can be ripped out with your teeth so they don't last 5 minutes. It will look ok on the car so you will need to remove the entire bushing. It's very easy to do.

Just undo the rear two bolts (14mm i think). see what happens. If the bush falls and swings like a banana then the bush is shagged. Replace with powerflex. Only replace the small bush otherwise your gearchanges will become extremely harsh and not nice to drive in stop start traffic. Takes about 2 minutes to remove with simple tools.