Hell of a job, this is why a repair shop cost lots of money and same way with axle surgeons or any specialist for that matter, this stuffs hard work, takes alot of skill knowledge, experience and strong men.
one company came to my old shop and cut the old bar out then split the leg tubes then welded flat plates to the tubes and spread the tubes with chisels and pressed in new bar then bolted tight with bolts thru the flat plates.(In outer words made a split tube style like pictured here)
Forgot I commented before but should have assembled springs on saddle and torqued before installing on truck.much easier to torque strapped to forklift upside down with u-bolt nuts up than having to torque on floor.then you just install complete assembly and your done.
There is or was a company that made a whole Trunion that you cut the old out and the new one had heavy spacers between the trunion mount and frame didn't have to pull out back saved time cutting rear mounts and x members out seen it done on garbage truck roll off.
Automann sells them but there is another company and I can't believe I can't think of it, that made them as well. Couldn't make them fast enough, a batch would be half gone before it they had them in, they'd get ordered and backordered until they came in, was almost like pre-ordering. Open frame like this, even splitting the rails for the OEM stand wouldn't be the end of the world and doing the full stand can save enough labor to pay for it over pressing in a new bar. Not like you've got a big concrete mixer body or pump tank mounted where the one with the spacers really shines.
I was going to say though, thats the way to go over fighting that bar and pressing a new one. Probably ups the parts bill $1800 but labor and outside specialities add up. Doing the whole stand also guarantees that you don't lose time with a badly stuck bar as you are literally just cutting everything out and starting new from the rails down and its just assembling pieces...
Que no sirven 25 toneladas es mucho peso máximo 18 toneladas. Yo la he visto cuando se quiebran de ese perno se cuartean y se kebran los ejes y las gomas cuadradas que van en los ejes y muelles se rompen rápido. NOOOO SIRVE ESA SUSPENSIÓN GARRA
@@josebanuelos8500 That is the 46k Camelback with 23k axles. Where I am we can run 22400 lbs per axle legally On a triaxle here with 20k front 20k lift and 46 rears if the truck has proper tire rating 89,600 legally Ese es el Camelback de 46k con ejes de 23k. Donde estoy, podemos correr 22400 lbs por eje legalmente En un trieje aquí con 20k delantero, 20k de elevación y 46 traseros si el camión tiene una clasificación de neumáticos adecuada 89,600 legalmente
Awesome job! I'm doing the same job on my Mack RB688. I have the trunnion shiaftcut. I'm having a he'll of a time knocking the remaining shafts in. How long do I heat the area around the shaft of the trunnion stand? Does it need to glow red? Do they have to be heated again to install the new shaft? Any help would be appreciated.
@@RobsTrucking I didn't notice that the first time I watched it. Needless to say I can't get mine to budge so I've ordered the trunnion stand from Stengal Brothers with the shaft in it. It blows, but knowone around here that could come to me has a press that can do it. Oh well, you win some and lose some.
davis you don't have an axle doctor or axle surgeon on your area? I checked at Mack they could do it and had a press but the axle people did it at my shop and brought the tube
@@RobsTrucking I just went ahead and ordered the trunnion stand and cut the old one out this morning. I really appreciate you trying to help me out. I'm replacing all of the suspension components and doing brakes as well. Then putting another dump bed on it. Quite a job but will be worth it and still a lot cheaper than a new truck.
just did one without swapping out Trunnion Bar (Atro bushings, new trunnion saddles, ubolts, new leafsprings all new hardware, all 4 wheel ends (brake shoes, drums, slack adjusters, brake cans and 1 wheel seal) $8700 parts & Labor. 25 hrs total time
It was worn out with flat spots. There is a bronze bushing that rides on the bar, when you grease the rear suspension you must take weight off suspension to allow grease to get between the bushing and bar and prevent premature wear. Becuase of gravity and the truck weight if you dont lift it up it is difficult to get grease on the bottom side also lifting the truck you can track the wear of the suspesnion.
$1600 for Trunnion $1276.63 For Bushings, Pads, Housings, U Bolts, Center Bolts, all Lug Nuts and inner nuts, New Brakes Brakes and Hardware Total $2876.63
I have a quick question about this , I have a RD Mack with the same suspension I change both side trunnion housing, u bolts , all rubber pads with spacers and my rear wheels still walks a little side to side do u know what would cause that
I don't think so especially for a dealership that is supposedly has skilled trained mechanics. If you don't know what you are doing and have the right tools it may take 30 hrs I listed what it took me.
Can you clarify you blanket statement? In regards to the parts I used I have not had any issues with them or the suspension repair. They meet OEM spec which means they are equivalent to factory. Your broad statement holds no intrinsic value because it is not quantified, it means no more than "I like Chevy over ford" just personal preference.
@@williameverett3136 i didn't think you were knocking the work, I am just wondering what happened that made your experience with automann so bad. The ubolts are automann only brand that was in stock.
Hell of a job, this is why a repair shop cost lots of money and same way with axle surgeons or any specialist for that matter, this stuffs hard work, takes alot of skill knowledge, experience and strong men.
Awesome Job GUYS, CONGRATS !!! !! !
one company came to my old shop and cut the old bar out then split the leg tubes then welded flat plates to the tubes and spread the tubes with chisels and pressed in new bar then bolted tight with bolts thru the flat plates.(In outer words made a split tube style like pictured here)
Man I've done a lot of those mack suspension's
Forgot I commented before but should have assembled springs on saddle and torqued before installing on truck.much easier to torque strapped to forklift upside down with u-bolt nuts up than having to torque on floor.then you just install complete assembly and your done.
There is or was a company that made a whole Trunion that you cut the old out and the new one had heavy spacers between the trunion mount and frame didn't have to pull out back saved time cutting rear mounts and x members out seen it done on garbage truck roll off.
Automann sells them but there is another company and I can't believe I can't think of it, that made them as well. Couldn't make them fast enough, a batch would be half gone before it they had them in, they'd get ordered and backordered until they came in, was almost like pre-ordering. Open frame like this, even splitting the rails for the OEM stand wouldn't be the end of the world and doing the full stand can save enough labor to pay for it over pressing in a new bar. Not like you've got a big concrete mixer body or pump tank mounted where the one with the spacers really shines.
I was going to say though, thats the way to go over fighting that bar and pressing a new one. Probably ups the parts bill $1800 but labor and outside specialities add up. Doing the whole stand also guarantees that you don't lose time with a badly stuck bar as you are literally just cutting everything out and starting new from the rails down and its just assembling pieces...
Great job
Thanks
Esa suspensión es de lo más garra que pueda a ver
It is pretty stout with 25 tons on Es bastante robusto con 25 toneladas en el camión.
Que no sirven 25 toneladas es mucho peso máximo 18 toneladas. Yo la he visto cuando se quiebran de ese perno se cuartean y se kebran los ejes y las gomas cuadradas que van en los ejes y muelles se rompen rápido. NOOOO SIRVE ESA SUSPENSIÓN GARRA
@@josebanuelos8500 That is the 46k Camelback with 23k axles. Where I am we can run 22400 lbs per axle legally
On a triaxle here with 20k front 20k lift and 46 rears if the truck has proper tire rating 89,600 legally
Ese es el Camelback de 46k con ejes de 23k. Donde estoy, podemos correr 22400 lbs por eje legalmente
En un trieje aquí con 20k delantero, 20k de elevación y 46 traseros si el camión tiene una clasificación de neumáticos adecuada 89,600 legalmente
La suspensión jenrinsonk es la más chingona y más economica que la porquería de Mack o garrack ya sea en piezas de diferenciales
Awesome job! I'm doing the same job on my Mack RB688. I have the trunnion shiaftcut. I'm having a he'll of a time knocking the remaining shafts in. How long do I heat the area around the shaft of the trunnion stand? Does it need to glow red? Do they have to be heated again to install the new shaft? Any help would be appreciated.
Depends on style of trunion. My was a split style removed the bolts and wedged chisel into it to spread
@@RobsTrucking I didn't notice that the first time I watched it. Needless to say I can't get mine to budge so I've ordered the trunnion stand from Stengal Brothers with the shaft in it. It blows, but knowone around here that could come to me has a press that can do it. Oh well, you win some and lose some.
davis you don't have an axle doctor or axle surgeon on your area? I checked at Mack they could do it and had a press but the axle people did it at my shop and brought the tube
@@RobsTrucking I just went ahead and ordered the trunnion stand and cut the old one out this morning. I really appreciate you trying to help me out. I'm replacing all of the suspension components and doing brakes as well. Then putting another dump bed on it. Quite a job but will be worth it and still a lot cheaper than a new truck.
You are right about better than a new one
Hi Thomas . is it possible to get in touch with you ?
\
You just did, what is your question
What do you charge to do that? I have an R model mack.
just did one without swapping out Trunnion Bar (Atro bushings, new trunnion saddles, ubolts, new leafsprings all new hardware, all 4 wheel ends (brake shoes, drums, slack adjusters, brake cans and 1 wheel seal) $8700 parts & Labor. 25 hrs total time
Why replace the bar itself?
It was worn out with flat spots. There is a bronze bushing that rides on the bar, when you grease the rear suspension you must take weight off suspension to allow grease to get between the bushing and bar and prevent premature wear. Becuase of gravity and the truck weight if you dont lift it up it is difficult to get grease on the bottom side also lifting the truck you can track the wear of the suspesnion.
How much did it cost to replace
$1600 for Trunnion
$1276.63 For Bushings, Pads, Housings, U Bolts, Center Bolts, all Lug Nuts and inner nuts, New Brakes Brakes and Hardware
Total $2876.63
I have a quick question about this , I have a RD Mack with the same suspension I change both side trunnion housing, u bolts , all rubber pads with spacers and my rear wheels still walks a little side to side do u know what would cause that
So 30 hrs would have been fair to charge
I don't think so especially for a dealership that is supposedly has skilled trained mechanics. If you don't know what you are doing and have the right tools it may take 30 hrs I listed what it took me.
@@RobsTrucking it is 30 hours because of 2 techs on it you don’t get a buy one get one with labor
i guest air ride is better but who know how long last each rubber airbag probably one year
Air bag is not better. No suspension is better than camelback ever.
automann parts r junk
Can you clarify you blanket statement? In regards to the parts I used I have not had any issues with them or the suspension repair. They meet OEM spec which means they are equivalent to factory. Your broad statement holds no intrinsic value because it is not quantified, it means no more than "I like Chevy over ford" just personal preference.
I Saw an automann box I don't know what it was for but I not use those parts any more good song
I'm not knocking ur work or anything nice job
@@williameverett3136 i didn't think you were knocking the work, I am just wondering what happened that made your experience with automann so bad.
The ubolts are automann only brand that was in stock.
Why didn’t you show how easy it is to get the spring in position onto the trunion?
I was filming with a phone to document the highlights as there was nothing on the internet at the time.