Volvo S80 3.2 Right Eng Mounts Replaced 125k

Post by **Skymongrel** » 27 Oct 2020, 08:38

I'm still tackling some of the easy Volvo S80 repairs and have replaced the Upper Right Torque Rod Engine mount and Right Eng Mount. I didn't have a lot of vibration and noise except that dealer told me I needed new wheel bearing and I thought I'd eliminate any other potential noise makers before tackling that.

On inspection my Upper Right Torque Rod Mount had a significant crack in the rubber bushing and the Engine mount below it was considerably compressed. As I believed these were both original I went ahead and replaced them. I'm sharing some observations and pictures.

The Right Engine Mount was considerably compressed and once removed the rubber membrane at it's bottom was intact but made a "squishy" sound when manipulated by my fingers. I also could hear air escaping when pushing it however there was no sign of oil leakage except for a few drops when I squeezed it firmly.

Install was straight forward. And the pictures follow. Of course they are out of order...sorry.

One tip: I had to jack engine up more than I thought I'd have too in order for the top engine mount bolt hole to align with the top mounting plate above.

Carboy · Post by **Carboy** » 13 Jun 2021, 13:57

Hi
I am looking to change the engine mounts on my 2007 S80 3.2.
The rubber in the upper torque strut elastomer was completely separated and changing that out was a relatively simple task.
Did not improve the ungodly rattle at idle and under load.
I’m pretty sure all mounts need to be changed but I thought I would start with the easiest one first.
Could you direct me too a remove and replace procedure for the front hydromount?
(When one torque reaction mount separates it adds more torque load to the other mounts)
Thx
Dave

Post by **pgill** » 14 Jun 2021, 11:34

The XC90 is similar but not identical to my S80 3.2 and LR2 3.2

The differences are minor

This link shows what I did for my P3s

https://www.freel2.com/forum/topic32979.html

Good luck

Paul

Post by **Skymongrel** » 14 Jun 2021, 17:31

Dave, sorry I haven't changed the other mounts. Let us know if you change them and how the noise improves! Probably have to do this soon myself.

Carboy · Post by **Carboy** » 16 Jun 2021, 05:19

Thx Paul
Link was informative.
My only other question is;
In order to lift the powertrain up high enough to install the new taller mount (un-collapsed mount ) was it necessary to pull the thru-bolt out of the lower torque reaction mount (small mount located below the upper torque strut that is attached to the cradle)?

Post by **pgill** » 16 Jun 2021, 10:26

I think you are asking.

Can the Dog bone be replaced without lifting the engine?

(For my S80 and LR2 yes)

The XC90 is slightly different than the S80 or LR2

So I can't answer for the XC90

I've only done this on my LR2 and S80

Let me know if I misunderstood your question.

Thanks

Paul

Carboy · Post by **Carboy** » 16 Jun 2021, 15:48

No the mount I am referring to is almost directly below the large end of the torque strut.
It is a non-hydraulic torque reaction mount.
I wonder if I have to remove this attachment in order to lift the engine up high enough since it is located between the cradle and the engine and could stop the engine from being jacked up high enough away from the car body.
I assume since you are unclear that you did not have to remove the attachment on this lower mount in order to replace the passenger side hydraulic mount. (See red arrow for aforementioned mount)

: F9AFEC8E-CCA4-4BFA-80ED-688247F08C68.jpeg (98.17 KiB) Viewed 3124 times

Post by **pgill** » 16 Jun 2021, 16:21

I just lifted mine without removing or loosing that mount.

Note: you don't have to lift it high only about 12.5 mm (if those are useful units) or half an inch (in units that are more familiar to me).

Good luck

Paul

Carboy · Post by **Carboy** » 16 Jun 2021, 16:22

Carboy · Post by **Carboy** » 23 Jun 2021, 17:54

I replaced the right hand side hydromount.
What a difference this makes!!
The engine mount was so badly damaged that the engine side bracket and the body side mount metals were touching all the time.
The rubber element was unable to support the engine mass.
The result of this failure made it continuously sound like a diesel engine without mufflers under all operating conditions. The upper torque strut had failed prior to this Hydromount change This makes sense the Hydromount was not designed to react engine torque only vertical loads but since the torque strut failed the hydromount ended up reacting the engine torque on the top side of the engine which probably exacerbated it’s demise.
Very pleased with the results

Following figures show the old Hydromount next to the new Hydromount and The witness marks of where the engine side bracket contacted the body side Hydromount metal which eliminates any hope of power train isolation.