XC70: General - Replace engine undertray nuts

Wilko66 · Mar 14th, 2018, 19:13

can anyone tell me how to replace the plastic nuts which the torx screws screw into to hold the tray under the engine on, With the screws being removed several times I can seem to get a good hold with the screws. (Do the nuts just pull out?)
Thanks.

kenny · Mar 14th, 2018, 19:28

Same happened to mine, I just replaced the screws with these https://www.ebay.co.uk/itm/10x-Hex-S...0AAOSwSzRZN82c worked a treat.

Wilko66 · Mar 14th, 2018, 19:56

Top tip. Thanks, Kenny.

Wilko66 · Mar 22nd, 2018, 08:48

Tried the screws Kenny, they didn't work, worth a try though. Going to replace the plastic inserts, they just lever out and the new ones push in. Haven't got a price from Volvo yet. Although thinking about it fatter screws would probably do the trick.

MartinK · Mar 23rd, 2018, 08:49

Wilco.... please please post the part # when you get them from Volvo? I'll order some from FRF once we have a part #... cheers

apersson850 · Mar 23rd, 2018, 09:24

I have this under my engine. Has more sturdy screws and nuts.

jodiexii · Mar 23rd, 2018, 09:56

Quote:

Originally Posted by apersson850

I have this under my engine. Has more sturdy screws and nuts.

How much did it set back, if you don't mind me asking?

1monkey600 · Mar 23rd, 2018, 11:48

Quote:

Originally Posted by jodiexii

How much did it set back, if you don't mind me asking?

Skandix sell them for 285euro for the 5-cylinder cars (31316517) and 385euro for the 4-cylinder cars (31370000)

They basically fit via the original mounting holes - you remove the square inserts, drill the existing square hole to round and insert a rivnut (basically a pop rivet with a thread inside.

MartinK · Mar 26th, 2018, 14:59

Aha - done some research and found this:

The rear two are Volvo part #30683311

The other (red) ones in front are #30683256

New screws #998164

I will order an assortment next time I place an order with FRF...

see https://www.volvopartswebstore.com/s...roduct=1126633

Wilko66 · Apr 29th, 2018, 09:18

The part numbers for the under tray fasteners are
Plastic nut 30683256
6 point screw 998164

Mar 14th, 2018, 19:13	#1
Wilko66 Junior Member Last Online: Mar 4th, 2024 10:59 Join Date: Feb 2018 Location: Workington	Replace engine undertray nuts can anyone tell me how to replace the plastic nuts which the torx screws screw into to hold the tray under the engine on, With the screws being removed several times I can seem to get a good hold with the screws. (Do the nuts just pull out?) Thanks.

Mar 23rd, 2018, 08:49	#5
MartinK Senior Member Last Online: Jan 10th, 2019 14:27 Join Date: Apr 2009 Location: Edinburgh & Aviemore	Wilco.... please please post the part # when you get them from Volvo? I'll order some from FRF once we have a part #... cheers __________________ 2009 XC70SE Geartronic

Mar 14th, 2018, 19:28	#2
kenny Master Member Last Online: Dec 16th, 2020 20:33 Join Date: May 2009 Location: kirknewton	Same happened to mine, I just replaced the screws with these https://www.ebay.co.uk/itm/10x-Hex-S...0AAOSwSzRZN82c worked a treat.

Mar 14th, 2018, 19:56	#3
Wilko66 Junior Member Last Online: Mar 4th, 2024 10:59 Join Date: Feb 2018 Location: Workington	Top tip. Thanks, Kenny.

Mar 22nd, 2018, 08:48	#4
Wilko66 Junior Member Last Online: Mar 4th, 2024 10:59 Join Date: Feb 2018 Location: Workington	Tried the screws Kenny, they didn't work, worth a try though. Going to replace the plastic inserts, they just lever out and the new ones push in. Haven't got a price from Volvo yet. Although thinking about it fatter screws would probably do the trick.

Mar 23rd, 2018, 09:24	#6
apersson850 Premier Member Last Online: Apr 22nd, 2024 14:08 Join Date: Jul 2011 Location: Traryd View Photos By: apersson850	I have this under my engine. Has more sturdy screws and nuts.

Mar 26th, 2018, 14:59	#9
MartinK Senior Member Last Online: Jan 10th, 2019 14:27 Join Date: Apr 2009 Location: Edinburgh & Aviemore	Aha - done some research and found this: The rear two are Volvo part #30683311 The other (red) ones in front are #30683256 New screws #998164 I will order an assortment next time I place an order with FRF... see https://www.volvopartswebstore.com/s...roduct=1126633 __________________ 2009 XC70SE Geartronic Last edited by MartinK; Mar 26th, 2018 at 15:02.

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