xdudebrahx Posted April 11, 2018 Share Posted April 11, 2018 Thinking about trying to tackle the cab bushings on the R I drive if it's not too much of a chore. Anyone done it recently that could offer some tips? I wanna know how deep I'm getting in before I start the job. Is it as simple as unbolting the rear bushings and popping the new ones in? Or do the front mounts have to come apart at the same time? I'm assuming the cab would have to be lifted a little bit in the rear since it's sagging so badly. The truck is a 1978 R612ST and it has a bar across the frame that the two cab bushings are attached to. I'd love to post pics, but this forum keeps giving me an error message when I do. Quote Link to comment Share on other sites More sharing options...
Rob Posted April 11, 2018 Share Posted April 11, 2018 (edited) 12 minutes ago, xdudebrahx said: Thinking about trying to tackle the cab bushings on the R I drive if it's not too much of a chore. Anyone done it recently that could offer some tips? I wanna know how deep I'm getting in before I start the job. Is it as simple as unbolting the rear bushings and popping the new ones in? Or do the front mounts have to come apart at the same time? I'm assuming the cab would have to be lifted a little bit in the rear since it's sagging so badly. The truck is a 1978 R612ST and it has a bar across the frame that the two cab bushings are attached to. I'd love to post pics, but this forum keeps giving me an error message when I do. It's not bad but you will need a bottle jack to lift the rear of the cab to pull out the bushings. The bolt heads are in the cab and a helper to hold a wrench under the truck makes it easier. The cab will rotate on the front bushings enough you don't need to touch them but it would be a good idea to replace those also as they are not expensive. Worn out rear cab bushing sure make that thing "knock" don't they????? Edited April 11, 2018 by Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
xdudebrahx Posted April 11, 2018 Author Share Posted April 11, 2018 It already rides like it has square wheels lol so I'll take any improvement. I'm gonna call the local Mack dealer and price them out. I also have access to a crane to make things easier. Quote Link to comment Share on other sites More sharing options...
Lmackattack Posted April 11, 2018 Share Posted April 11, 2018 The rear cab bushings are easy to replace but to be honest I dont think it will do much to make it ride better. Cab air ride would be better if the truck is set up to convert over fairly easy. Quote Link to comment Share on other sites More sharing options...
xdudebrahx Posted April 12, 2018 Author Share Posted April 12, 2018 5 hours ago, Lmackattack said: The rear cab bushings are easy to replace but to be honest I dont think it will do much to make it ride better. Cab air ride would be better if the truck is set up to convert over fairly easy. I don't honestly expect it to, I'd just like the truck to look like the cab isn't sitting on top of the fuel tanks. 1 Quote Link to comment Share on other sites More sharing options...
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