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what is this part?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
YK1Spartan
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YK1Spartan

what is this part?

Post by YK1Spartan » Tue Feb 19, 2019 3:15 am

Hi

I found this under my car. What is it and how do I put it back?
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IMG_20190219_084443.jpg
IMG_20190219_084340.jpg

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ggleavitt
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ggleavitt

Re: what is this part?

Post by ggleavitt » Tue Feb 19, 2019 7:29 am

Nothing like a good challenge to start the day. Damper for a diesel, #5 on the diagram, can see where its supposed to be mounted. Little odd that you found it on the ground, find a large bolt down there as well?
D5 Engine Mounting_XC90.JPG
D5 Engine Mounting_XC90.JPG (76.68 KiB) Viewed 357 times
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YK1Spartan
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YK1Spartan

Re: what is this part?

Post by YK1Spartan » Tue Feb 19, 2019 9:12 am

did not find on the ground, found it in that plastic cover no 43. did not find a bolt. how important is it?

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mrbrian200
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mrbrian200

Re: what is this part?

Post by mrbrian200 » Tue Feb 19, 2019 9:37 am

I'm curious as to what's inside that little thing.

Umm, one second looking at the diagram: if you found that on the ground this would mean the bolt that attaches your upper engine mount fell out/engine mount disconnected. You want to rectify this situation immediately with a new bolt/nut.

If the engine mount is intact (bolt is not missing) this would indicate a previous service/mechanic left this under the hood/missed putting it back where it belongs after having this apart.

YK1Spartan
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YK1Spartan

Re: what is this part?

Post by YK1Spartan » Wed Feb 20, 2019 1:20 am

Thank you for your help. looks like the mount has all its parts except for the damper. must have happened when they removed the DPF filter and that was removed months ago, so I am very lucky that the damper did not roll out under that cover.
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abscate
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abscate

Re: what is this part?

Post by abscate » Sun Feb 24, 2019 6:37 am

Those guys charging $150 an hour for their work botched this one.

It’s even better that you found it as it’s a NLA part!

I love curious people, Mr Brian. Love to open this up and see what’s inside? Swedish oak chips maybe?
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RickHaleParker
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RickHaleParker

Re: what is this part?

Post by RickHaleParker » Sun Feb 24, 2019 7:47 am

abscate wrote: ↑
Sun Feb 24, 2019 6:37 am
I love curious people, Mr Brian. Love to open this up and see what’s inside? Swedish oak chips maybe?
It is a Damper so I'll bet on different masses inside depending on application. A green mass for some applications. A yellow mass for other applications.
--------
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
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abscate
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abscate

Re: what is this part?

Post by abscate » Mon Feb 25, 2019 5:09 am

Does this thing have some sharp resonance IT absorbs from the engine top mount?

We found a similar thing on wizechatmgrs XC70, a metal box under the car bolted to the frame and mounts filled with Swedish squirrel dung. Yellow type.
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