This picture shows a new Cummins motor mount isolator next to an old one. The old isolator was removed from Pet Tug #60. The permanent deformation means the isolator isn't doing its job as well as it should. The new mount was purchased from Cummins for $47. As a point of interest, Lou Steplock reports that the isolator was originally designed for an airplane.
The rubber isolator is located under the stainless washer in the center of the above picture. The weight of the engine continually compresses the mount. I guess we know what happens over time ...
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