Shaking after aal's and shackles

[audiodude332001]

Hey everyone. About 2 weeks ago I installed the pro comp double add a leafs, and shackles. For about the last 4 days the truck has been shaking really bad at speeds below 25 mph and the shaking stops as soon as the truck comes to a complete stop. Then, when I start to accellerate it starts shaking again really bad untill I hit about 25. I can tell that the shaking is coming from the rear end, so I figure it has something to do with the aal's and shackles. Besides it shaking, it also makes this weird noise kinda like metal hitting metal. When I installed the add a leafs I wasnt really paying attention when I was putting the leafs back together, and I left out the little spacers that go between the leafs. Could this be why? I am getting really sick of this shaking, so if anyone has any idea of whats going on, please help.

Thanks,
Andy

 

[Billy177]

put the spacers back in and make sure the rear end is not ****ed

 

[audiodude332001]

So you think the spacers would actually cause the shaking? I really dont want to take the stupid leafs back apart. I suppose that I could take the spacers, and cut in from the side to the hole, and then just loosen the leafs back up and pound them in there. What do you think?

 

[Billy177]

i dont know if they would cause the shaking but they were put there for a reason and they should go back in

 

[audiodude332001]

Ok, so I was talking to one of my friends at work tonight and he said that it could be the U joint on the axle shaft binding or something because I lifted the back, and the U Joints are so old and worn out. What do you think? Also, could it be the angle of the driveshaft, because it changed a bit when I lifted it?

 

[Billy177]

u joints would do it. replace em they are cheap and go from there

 

[sk1er17]

the driveshaft should be fine.. people do SOA's and are ok-

i have double AAL's, shackles, 4door leafs and mines solid as a rock.

 

[audiodude332001]

so you think I should just replace the U-Joints? Do I need one or two for the rear axle?

 

[Billy177]

i am pretty sure 2 but i would doubble check

 

[audiodude332001]

how can I check to see if they are bad

 

[Billy177]

wiggle the driveshaft for play

 

[audiodude332001]

Thanks, I'll check it after school tommorow.

 

[audiodude332001]

Ok, so when I got home today I crawled underneith the truck, and I just thought I would retorque the ubolts. I torqued them down about a week ago. I think I torqued them to 85 lbs. They seemed fairly tight today, but I torqued them down to 100 lbs and took the truck for a drive and it doesnt shake anymore. At least I solved the problem for now, but they seem like they like to loosen themeselves up. Maybe I need to use some locktite on them.

 

[Billy177]

i think they came with the red locktite on them from the factory but use the blue if you plan to remove them anytime soon