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Old 01-08-2011, 09:12 PM
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79Mercy 79Mercy is offline
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Join Date: Mar 2008
Location: Florida
Posts: 4,131
W115 motor mount replacement & subframe removal w/pics

All i can say about this job is that i waited wayy to long to do it.

It feels like a different car, no more vibrating, loud resonating sounds through-out the cabin... so smooth at idle you almost wouldn't know it running..

Someone before me had tried to replace the motor mounts and stripped out 2 of the 6mm mounting bolts that hold the mounts to the subframe. Well in the W115 300D there was not anywhere near enough remove to remove the stripped bolts with the subframe still in place, so i had to drop the subframe. To remove the stripped allen bolts i took a 12mm 12 point socket and hammered it over the head of the bolt, worked great.

Its was actually a fairly simple jobs, just lots of things had to be done before you were ready to drop the subframe. it also required at least 2 people.

here are some pics. I used 2 floor jacks to lower the subframe, bottle jack to support the motor, and jack stand to support the front part of the subframe since the subframe would always want to fall forward.











__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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