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View Full Version : 850/S70/V70/C70 Upper Engine Mount Replacment



Bracer
Monday 22nd November 2004, 17:03
The 850's upper engine mount (http://www.matthewsvolvosite.com/images/eng_mount_orig.jpg) is designed to hold the engine in place. Without it, the engine would thrash back and forth in the engine bay and damage nearly everything near it. There are two lower engine mounts that are responsible for the engine's weight. It's easily spotted at the top of the engine a bit to the passengers side (Uk) and reaches to mount onto the Bulk head (Fire wall). When it decays, the results can vary from engine vibration felt in the cabin to violent shake and sounds from the engine bay.

The upper engine mount, as it comes from the factory, is a molded rubber piece a little smaller than a baseball. Replacement polyurethane mounts (about £25 from here (http://www.partsforvolvosonline.com/product_info.php?cPath=28_23_38&products_id=2288) ) are two half-donut pieces Pic (http://www.partsforvolvosonline.com/images/large_images/pff88_105_large.jpg) that come together from either side of the metal arm (you don't replace this).

http://www.matthewsvolvosite.com/images/eng_mount_out.jpg

Tools
hacksaw
hammer
ratchet set
adjustable wrench

Procedure
Remove the bolt that runs through the center of the engine mount. Put the adjustable wrench on one side to keep it from turning while you use the ratchet to unscrew the bolt. When this is out take a hacksaw blade and run it through the OEM bushing (there are holes). Cut the bushing from the inside out (cutting approximately a half- or a quarter of a centimeter). This photo shows (http://www.matthewsvolvosite.com/images/eng_mount_removal.jpg) the original bushing that has just been cut. IMPORTANT: The hacksaw blade appears to be 'aimed' at the bolt hole... but please, don't cut that. It should not look like you need to cut through any metal. My apologies for the somewhat inaccurate photo, but it's the only one that shows the original bushing after the cut (http://www.matthewsvolvosite.com/images/eng_mount_out.jpg) , but still in the arm.

The next step is to remove the bushing after the cutting has collapsed the integrity of it. It should pull out either side.

Refitting
Line everything up, put in either half of the replacement polyurethane bushing which can be somewhat of a tight fit (or the one peice of the OEM replacement if you're concerned about keeping your Volvo running with the correct parts), keeping in mind you may have to tap the bolt through with a hammer. If the holes are not lining up perfectly, get a friend to try to rock the engine back and forth while you push and tap the bold. Don't forget the washers.

Conclusion
The hardest part is getting the old OEM bushing out apart from that a great little mod. Note you do get a slight increase in cabin noise as a result of the Polly bush but nothing obtrusive.