1st Gen R53 Cooper S R53 late model motor mount

R53 late model motor mount - PICs

Anyone ever wanted to see the inside of one??

Here it is:





And, here is what "pops" and lets the fluid out.



Sorry for the not-so-great pics. My good camera was at home.

If you were to re-assemble, it would be top on the left and bottom on the right (in second pic).

The fluid is in the bottom half of the mount. The part that is stuck diagonal is the sealing ring. Poor, poor design, imho.

 

Yep, the lower half is the only part containing fluid.

The upper half is somewhat free to move around. There en lies the problem.
Its movement is supposed to be limited by the upper half (metal), while it is, it is allowed to move too much before meeting the metal housing. Therefore putting too much stress on the inner workings. Namely the lower sealing "flap". Seen in pic 3.
Keep in mind that I cut the center so that you can actually see what I mean.
There was only a small hole (pinhole) in the edge of the circle. But, that would be enough for fluid to escape via the 2 holes in the bottom.

The part dead-center of 1st pic has the anchor for the mount attached to the motor. The part of that assembly that is tilted, is what seals the fluid in the lower half. It is pressed into the lower bowl - over the large hockey-puck looking thing. It acts as the "damper" in the fluid.

Just FYI vertical travel has been observed at over an inch. While there is horizontal movement, there is way more on the vertical side of things.

Anyone want to gander a guess as to what I did with this?