’91 420SEL. Getting ready to reinstall my A/C compressor and thought it might be a good time to replace the engine mounts. So it’s on the lift and I’m staring at right side mount scratching my head trying to figure how this thing comes apart. The big single bolt from underneath, easy. The smaller outboard bolt on top, easy. The inboard smaller bolt, no access at all?
The arm to the engine mounting plate which also is the engine shock mount covers it.
The four hex bolts on the engine mounting plate could be removed except for the upper left one that bottoms out on the mount itself.
I’ve searched the forums. Nada.
Has anyone done this, or have a link. I’m thinking the W126 V-8’s may all be the same.
I’m stumped. I have the FSM CD’s but haven’t looked at that yet. Looking for some real life experience.

TIA

I'm having a little trouble visualizing this at the moment, but I seem to remember always doing the 126 mounts and shocks at the same time. I think maybe if you take the shocks off first you can get to it. I haven't done one of these for a while, so I may be wrong...

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Alex
MB Star certified, now independent.
Owner/Operator FDMotorsport Mpls. MN
Mercedes and GM certified transmission rebuilder
We all need a little help sometimes...

1998 E320 4MATIC-- stolen by my sister
1989 300TE-- sold
1999 C230 Kompressor

Remove large allen bolt under car, remove small shock mount at bottom, jack up motor , wood under trans /engine surface where they both join, remove upper metal shield, use 1/4 rachet with 6mm allen socket , take mount out , replace.done

Here's the FSM document on doing the 420's engine mounts:

http://www.startekinfo.com/StarTek/outside/12253/disc%202/program/Engine/107/M117_56/22-211.pdf

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Thanks all:

My problem was just the inboard 6mm mounting bolts. I found the secret from LANDSCAPE who had just done his a week before (on that other forum). On the W126 V8 gasser, even with the engine jacked up, there is very limited hand or wrench space. Used an L-shaped Allen wrench. 1/8 turn at a time. Very, very, BORING!