DMorgan Posted February 15, 2010 Share Posted February 15, 2010 Hello everybody, I got a B-421 "SX" with the walking beam (NOT Camelback), suspension on it. I was wondering if anybody knows if Mack or anyone else makes reproduction rubber bushings for it? All you can see on mine is a few remnents of rubber left. Thanks for your help, Daniel Quote Link to comment https://www.bigmacktrucks.com/topic/12658-b-421-sx-wb-suspension-rubber-bushings/ Share on other sites More sharing options...
Rob Posted February 15, 2010 Share Posted February 15, 2010 Hello everybody,I got a B-421 "SX" with the walking beam (NOT Camelback), suspension on it. I was wondering if anybody knows if Mack or anyone else makes reproduction rubber bushings for it? All you can see on mine is a few remnents of rubber left. Thanks for your help, DanielA lot of truck parts vendors that rebuild drivelines can rebuild the walking beams. It is costly and seldom performed any longer due to age of the suspension. There are also pins and it takes several tons of hydraulic pressure to get those out.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/12658-b-421-sx-wb-suspension-rubber-bushings/#findComment-49741 Share on other sites More sharing options...
DMorgan Posted February 16, 2010 Author Share Posted February 16, 2010 A lot of truck parts vendors that rebuild drivelines can rebuild the walking beams. It is costly and seldom performed any longer due to age of the suspension. There are also pins and it takes several tons of hydraulic pressure to get those out.Rob Rob, do you think that I could buy the rubber bushings and put them in my self? And also I'm not real sure what you mean by the pin that is hard to get out. Are you talking about the big pin that the beams pivot on? Thanks for your help, Daniel Quote Link to comment https://www.bigmacktrucks.com/topic/12658-b-421-sx-wb-suspension-rubber-bushings/#findComment-49785 Share on other sites More sharing options...
Rob Posted February 16, 2010 Share Posted February 16, 2010 Rob, do you think that I could buy the rubber bushings and put them in my self? And also I'm not real sure what you mean by the pin that is hard to get out. Are you talking about the big pin that the beams pivot on? Thanks for your help, DanielI think you could purchase whatever you needed but there are mandrels and guides used to both push, and pull the existing bushings and shells out. If the beams are worn into such as used way beyond "worn out", it can really get expensive. The pivot pins are difficult to extract without the proper hydraulics and adapters as are the retention pins to the axle housings. The bushing kits themselves are probably not over a couple hundred dollars complete with bolts, but the labor is a killer.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/12658-b-421-sx-wb-suspension-rubber-bushings/#findComment-49789 Share on other sites More sharing options...
DMorgan Posted February 16, 2010 Author Share Posted February 16, 2010 I think you could purchase whatever you needed but there are mandrels and guides used to both push, and pull the existing bushings and shells out. If the beams are worn into such as used way beyond "worn out", it can really get expensive. The pivot pins are difficult to extract without the proper hydraulics and adapters as are the retention pins to the axle housings. The bushing kits themselves are probably not over a couple hundred dollars complete with bolts, but the labor is a killer.Rob Rob, So far as I can tell, the beams don't look too worn out at all. They still have the bushings in them, its just the bushings at the bottom of each bogie that are gone. And if it gets too tough trying to get it apart, I know a guy thet has either a 60 or 80 ton press that might help it along. Thanks a lot for your help, Daniel Quote Link to comment https://www.bigmacktrucks.com/topic/12658-b-421-sx-wb-suspension-rubber-bushings/#findComment-49794 Share on other sites More sharing options...
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