bconditt Posted May 19, 2012 Share Posted May 19, 2012 I am the process of purchasing a 1999 RD688S with a camelback suspension. Upon looking at the suspensionI noticed the round bar that runs from one side of the truck to the other and connects the suspension is significantly cracked.Any thoughts on the extent of the damage and more importantly the cost of repairs? Quote Link to comment Share on other sites More sharing options...
MACKS Posted May 19, 2012 Share Posted May 19, 2012 A good spring shop should be able to replace the entire rear suspension for about six thousand,maybe a little more if the saddles are shot,that's with new springs to. Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted May 19, 2012 Share Posted May 19, 2012 That may be the reason the truck is for sale. There is a bolt in suspenion that can be install with out removing any crossmenbers. Last time i saw pricing it was about 2500.00 Quote glenn akers Link to comment Share on other sites More sharing options...
bconditt Posted May 21, 2012 Author Share Posted May 21, 2012 Thanks to all for the input. It is definitely appreciated. Quote Link to comment Share on other sites More sharing options...
David Posted May 21, 2012 Share Posted May 21, 2012 Here's one for you..........http://www.ebay.com/itm/Mack-44-000lb-Trunion-Bracket-Assembly-97QL585-/110514885452?hash=item19bb33534c&item=110514885452&pt=Other_Vehicle_Parts&vxp=mtr Quote Link to comment Share on other sites More sharing options...
jonesy_9 Posted May 24, 2012 Share Posted May 24, 2012 I noticed some one else talking about the camelback suspension and the bushings between the axles just below the hump of the springs. Then I seen the picture of the crossmember bar or what ever it is cracked really bad. Anybody know what's going on there? I have a 1991 mack 350, dump truck. I have replaced those bushings twice and It looks as though they are completely worn out again. It hasnt been that long since last replaced. It looks as though the bushing keeps wearing out the casing it is in. In fact I believe we replaced that casing and everything the last time we changed the bushings. I am seeing lots of problems in this area. If any one has any advice for me, please get back with me. Thank you for your time. It is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Rob Posted May 24, 2012 Share Posted May 24, 2012 I noticed some one else talking about the camelback suspension and the bushings between the axles just below the hump of the springs. Then I seen the picture of the crossmember bar or what ever it is cracked really bad. Anybody know what's going on there? I have a 1991 mack 350, dump truck. I have replaced those bushings twice and It looks as though they are completely worn out again. It hasnt been that long since last replaced. It looks as though the bushing keeps wearing out the casing it is in. In fact I believe we replaced that casing and everything the last time we changed the bushings. I am seeing lots of problems in this area. If any one has any advice for me, please get back with me. Thank you for your time. It is greatly appreciated.Replace the rubber bushings with the much more durable urethane bushings. They will wear a lot better for you. The rubber bushing trunions are too lightweight, (my opinion) to be in a dump truck chassis. Heavier Mack rears used bronze bushings when rated at 40,000# suspension and above.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...
theakerstwo Posted May 24, 2012 Share Posted May 24, 2012 Like rob said. The rubber bushing of years ago would last ten times longer than they do now. I had some put in my truck and two months they were bad. We looked at them and they were made in china. They said they would replace them and i daid i will bring my own. The ones i am talking about now are two years old under a dump truck and they look good.Theurethane bushings is only way to go. Quote glenn akers Link to comment Share on other sites More sharing options...
Rob Posted May 24, 2012 Share Posted May 24, 2012 Like rob said. The rubber bushing of years ago would last ten times longer than they do now. I had some put in my truck and two months they were bad. We looked at them and they were made in china. They said they would replace them and i daid i will bring my own. The ones i am talking about now are two years old under a dump truck and they look good.Theurethane bushings is only way to go.Yeah Glenn, but the truck no longer "rides like a cloud" eh.........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...
jonesy_9 Posted June 7, 2012 Share Posted June 7, 2012 thanks so much for the input. I will do just that. This was very helpful. Quote Link to comment Share on other sites More sharing options...
Frmconcrete09 Posted June 7, 2012 Share Posted June 7, 2012 Hey Rob, is there any certain place you get these bushings ... never looked into it , but seems like it might be a good idea . . Always trying to improve these heavy gals Quote Link to comment Share on other sites More sharing options...
MACKS Posted June 7, 2012 Share Posted June 7, 2012 A friend of mine has an 86 RD 58 rears with the original bronze bushings still in the truck,he did replace the rubber pads once or twice,this on a very well used truck,just saying.. Quote Link to comment Share on other sites More sharing options...
Vladislav Posted July 6, 2012 Share Posted July 6, 2012 I have my Camelback of 1945 repaired last year.The milage is unknown.6 of 8 insulators were solid, bronze bushings were weared because of seals death and water income that made the trunnion rust.Have the trunnion shaft machined off to a less size and made new bushings.Problem was to find bronze because no bronze pipes were for sale, a solid piece only.Vlad. 2 Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment Share on other sites More sharing options...
Olivetroad Posted July 6, 2012 Share Posted July 6, 2012 I have my Camelback of 1945 repaired last year.The milage is unknown.6 of 8 insulators were solid, bronze bushings were weared because of seals death and water income that made the trunnion rust.Have the trunnion shaft machined off to a less size and made new bushings.Problem was to find bronze because no bronze pipes were for sale, a solid piece only.Vlad.That is a fine example of machine work - make what you need out of what you have available. 1 Quote Link to comment Share on other sites More sharing options...
Vladislav Posted July 6, 2012 Share Posted July 6, 2012 Here we have lots of machinery built and imported in Soviet times for army production mostly.Last 20 years no production development provides in our country so I meet less working equipment and skilled specialists.Most of them are gone now and millions tonns of heavy equipement were scrapped.So there are some abilities to order some complicated works but for costs probably higher than in the US. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment Share on other sites More sharing options...
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