Last fall I noticed a bushing/isolator supporting the radiator on the coach that had deteriorated to the point that about half of it was gone. While working on the coolant tubes a few weeks ago, I took some measurements and have been doing research to locate one. I discovered that it looks like a MACK truck radiator isolator is identical or maybe even what Monaco/Roadmaster sourced for use. I ordered a couple and they arrived last week while the wife and I were out of town so last night I took some time to replace them.
Here the lower part of the bushing is noticeably deteriorated to the point of most if being missing.
I the upper nut is spot welded to the support so a couple of shots of Kroil to creep into the threads and it was easily removed.
Bolt and both upper and lower bushings/isolator pieces removed.
New bushing.
New vs. old. Then the threads were cleaned up on the wire wheel and a coat of anti-seize applied before reassembly.
Radiator lowered just enough to slip the new upper bushing into position.
Bolt and lower bushing assembled.
And fully fastened.
Next to repeat on the forward bushing/isolator then it should be good for another 150k miles/23 years, whichever comes first.
Thanks for looking.