wamcneil Posted February 19, 2022 Share Posted February 19, 2022 Hi all, I noticed that my radiator appears to have dropped a little. And tracked it down to the rubber isolation bushings on the radiator hanger brackets. Any suggestions on where to look for replacements? Link to comment Share on other sites More sharing options...
DavidL Posted February 19, 2022 Share Posted February 19, 2022 Got a picture of what you have? I am positive that even if the exact bushing is not readily available, there are lots of solutions to the problem including making rubber isolators out of a rubber mat and shimming them underneath. Link to comment Share on other sites More sharing options...
Chargerman Posted February 19, 2022 Share Posted February 19, 2022 The isolators are actually a bushing and control side movement while also supporting the radiator vertically. I would get the dims off the old one and check McMaster Carr Link to comment Share on other sites More sharing options...
wamcneil Posted February 19, 2022 Author Share Posted February 19, 2022 Hmmm. Not sure what happened to the picture. Trying again… Link to comment Share on other sites More sharing options...
Ivan K Posted February 19, 2022 Share Posted February 19, 2022 (edited) Looks like rubber body mounts for trucks or older cars with a frame, should be plenty available either in rubber or polyurethane. Rubber probably preferred in this case. Edited February 19, 2022 by Ivan K Link to comment Share on other sites More sharing options...
Chargerman Posted February 19, 2022 Share Posted February 19, 2022 Just looked on McMaster Carr. Nothing there of the size you will need. Looks like Ivan struck the nail on the head. I don’t think I would consider polyurethane either for this application. Too stiff. Link to comment Share on other sites More sharing options...
jfbolkovatz Posted February 20, 2022 Share Posted February 20, 2022 I had this problem in 2012, went to Monaco parts in Oregon and was told they had none. went around back and saw chassis with the rubber mounts, went back to parts mentioned my findings and bought 2 mounts. Do not know why. I'd try Monaco parts. Link to comment Share on other sites More sharing options...
RBRODDER Posted February 21, 2022 Share Posted February 21, 2022 Ford used a similar rubber bushing on the early (66-77) Broncos. Link to comment Share on other sites More sharing options...
wamcneil Posted February 21, 2022 Author Share Posted February 21, 2022 Thanks y'all! Link to comment Share on other sites More sharing options...
wamcneil Posted February 21, 2022 Author Share Posted February 21, 2022 Well, it's a little bigger than I thought. 2.5" OD, 5/8" bolt and fits in about 1-5/8" hole in the support. Monaco used a washer just a tiny bit bigger than the hole in the support and it eventually punched down through the middle of the bushings. It's hard to find dimensions on any stock parts, but looks to be this one: MACK RADIATOR BUSHING: OEM 20QL295M 25121334 - Bolts, Gaskets, Bushings - Radiators & Accessories (radiatorpros.com) I ordered a couple of NOS Mack parts off of ebay. Hopefully they fit... I'll need to take the turbo hoses off to get the bolts out 😞 . Probably overdue for replacement anyway. Any recommendations on where to get new charge air cooler hoses? Thanks Walter Link to comment Share on other sites More sharing options...
Chargerman Posted February 22, 2022 Share Posted February 22, 2022 Getting those CAC hoses off is a real bear. Good luck with it. Link to comment Share on other sites More sharing options...
wamcneil Posted February 22, 2022 Author Share Posted February 22, 2022 Thanks. New CAC hoses are on the way... I'm hoping that a utility knife will make short work of the old ones! Link to comment Share on other sites More sharing options...
Chargerman Posted February 22, 2022 Share Posted February 22, 2022 (edited) 1 hour ago, wamcneil said: Thanks. New CAC hoses are on the way... I'm hoping that a utility knife will make short work of the old ones! Yes it will but getting the new ones on will be a bit of a challenge. For me the front one was a bear because of the tight quarters Edited February 22, 2022 by Chargerman Link to comment Share on other sites More sharing options...
wamcneil Posted February 22, 2022 Author Share Posted February 22, 2022 (edited) I was worried about that... The old hoses are almost 8" long. I figure they only really need to be 6" though and that might make it a bit easier. Fingers crossed... The rear looks like I might be able to take the bracket loose on the pipe from the turbo and get more clearance. Edited February 22, 2022 by wamcneil Link to comment Share on other sites More sharing options...
Chargerman Posted February 22, 2022 Share Posted February 22, 2022 A little shorter may help. Be sure to leave enough material to double clamp both ends Link to comment Share on other sites More sharing options...
wamcneil Posted February 25, 2022 Author Share Posted February 25, 2022 So here’s what I found. It’s a Mack radiator support bushing 25121334. Seems to be very similar to the old one. 1 1 Link to comment Share on other sites More sharing options...
Chargerman Posted February 26, 2022 Share Posted February 26, 2022 Nice job. I’m going to keep that number on file. Thanks for sharing! Link to comment Share on other sites More sharing options...
daveyjo Posted February 27, 2022 Share Posted February 27, 2022 figuring out what to call them is the issue. I bought some from Amazon. Google this Amazon description of my order and see what you can find. Rubber Mounts M8 M6 Anti Vibration Rubber Mount Cylindrical Isolator Vibration Isolation Mounts Shock Absorber Absorption Mount w/Threaded Stud Male Thread Silentblock Car Boat Bobbins, M8 Pack of 4 Link to comment Share on other sites More sharing options...
wamcneil Posted February 28, 2022 Author Share Posted February 28, 2022 On 2/26/2022 at 11:02 PM, daveyjo said: figuring out what to call them is the issue. I bought some from Amazon. Google this Amazon description of my order and see what you can find. Rubber Mounts M8 M6 Anti Vibration Rubber Mount Cylindrical Isolator Vibration Isolation Mounts Shock Absorber Absorption Mount w/Threaded Stud Male Thread Silentblock Car Boat Bobbins, M8 Pack of 4 Thanks... but these semi-truck radiator hangers are very different from those vibration isolators! These are 2-1/2" in diameter and have a 5/8" bolt through the middle. I found a suitable equivalent: Mack P/N 25121334 Maybe that should be added to the Radiator section of the parts list? 1 Link to comment Share on other sites More sharing options...
Frank McElroy Posted March 17, 2022 Share Posted March 17, 2022 Thanks for this info. I'll add it to the next parts list update. Link to comment Share on other sites More sharing options...
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