Is there any way to check the W201 motor mounts?

[Jetmugg]

Is there any way to check a W201 / W124 style motor mount when it is off the car to determine whether it is "good" or "bad"?

I have several that I have collected over the years. I just removed 2 from my 190D that I know were bad, and replaced them with 2 newer looking ones from a wrecked car. The vibration is greatly reduced now, so I feel good about the mounts that are now installed in the car.

However, I would like to be able to test some of the others to see if they are worth using or not.

SteveM.

[jt20]

there are two types, right?

the hydraulic and the rubber ones similar to the w123 mounts.

the rubber ones allow you make a pretty good guess visually.

The hydraulic ones I have a read a few different opinions on... such as measuring height or compressing them with a vice / C-clamp.

[Jetmugg]

Yeah - I'm talking about the hydraulic ones.

On all of them, if I shake them, I can hear a slight rattling sound (like there's something loose inside). The ones that I removed were much more pronounced in this rattling. They sounded like there was a loose ball bearing inside.

SteveM.

[Aquaticedge]

when 124 ones go bad, the Hydo ones, they get really squished looking, think mushroom cap look, there's some pictures on here of them bad, also you may have a trans mount, mine was shot to pot and when they replaced it my motor no longer shakes

[sixto]

There's a gap to measure in the 124 style mounts. 13mm or more is good, less is worn. You can make a measuring tool out of cardboard.





Sixto
87 300D

[Jetmugg]

Now that's good info, sixto.

I can't measure the "bad" ones in the installed position any more, but at least I have a way to judge the currently installed mounts.

Thanks guys.

SteveM.