Suspension squeak

[Cmab]

Been meaning to ask this since day 1 but figured it was typical of polyurethane bushings on Total Chaos UCAs. Is that annoying squeak coming from those bushings or from the BP-51’s? I installed both the same day and got that squeak since day 1 so Im not really sure. And ptf lube at all points doesn’t help. Any thoughts?

 

[Taco2Cruiser]

I have the same setup. It’s most likely the poly bushes of the Chaos arms. I found that the Super Lube that TC supplies squeaks after very few miles (and im a super lube fan). The Amsoil multi purpose grease seems to handle around 10k before I begin getting some faint squeaks.

Just remember to loosen the long bolt prior to greasing the zerk. If you see even the slightest deformation of the bush, stop.

Then tighten them back up to 133 lbf ft. I use a crowfoot to make torquing much easier.

if the bush looks even slightly like it’s deformed after torquing, then depress the zerk and get the extra grease out. Once you damage a poly bush, replacement is required.

 

[Cmab]

I will give that a try asap. Thank you.

 

[Mogwai]

I have the same setup. It’s most likely the poly bushes of the Chaos arms. I found that the Super Lube that TC supplies squeaks after very few miles (and im a super lube fan). The Amsoil multi purpose grease seems to handle around 10k before I begin getting some faint squeaks.

Just remember to loosen the long bolt prior to greasing the zerk. If you see even the slightest deformation of the bush, stop.

Then tighten them back up to 133 lbf ft. I use a crowfoot to make torquing much easier.

if the bush looks even slightly like it’s deformed after torquing, then depress the zerk and get the extra grease out. Once you damage a poly bush, replacement is required.

Edit: bad advice don't follow! "Also don't retorque until the truck is back on all 4 tires otherwise you'll strain your bushings and DEF hear a squeak. It's very odd there doesn't seem to be a rhyme or reason for the TC squeak, I haven't had a squeak in 20k miles (I use Super Lube but the amount they supplied was not enough)."

 

[Taco2Cruiser]

Also don't retorque until the truck is back on all 4 tires otherwise you'll strain your bushings and DEF hear a squeak.

I would have to respectful disagree with that. Poly bushes are non-deflection type bushes and the angle they are torqued at does not hold them at that angle once pushed around.

Unlike the factory vulcanized rubber, where they twist around themselves between the inner and outer cups, so having them tightened at the ride height is absolutely necessary.

You can see this when you first release a factory UCA from the spindle. Try and push the arm up or down, the factory type bushes will spring back to the angle it was torqued at. When you release the spindle from a UCA with Poly/Johnny Joints/x-axis/Heims..., when you push the arm up or down, it just stays where you last pushed it. That's why they are called non-deflection.

That's one of the pluses when I do installations, is that when a customer gets anything other than factory or older SPCs, I can do the UCA torquing when on the lift.

 

[Mogwai]

I would have to respectful disagree with that. Poly bushes are non-deflection type bushes and the angle they are torqued at does not hold them at that angle once pushed around.

Unlike the factory vulcanized rubber, where they twist around themselves between the inner and outer cups, so having them tightened at the ride height is absolutely necessary.

You can see this when you first release a factory UCA from the spindle. Try and push the arm up or down, the factory type bushes will spring back to the angle it was torqued at. When you release the spindle from a UCA with Poly/Johnny Joints/x-axis/Heims..., when you push the arm up or down, it just stays where you last pushed it. That's why they are called non-deflection.

That's one of the pluses when I do installations, is that when a customer gets anything other than factory or older SPCs, I can do the UCA torquing when on the lift.

Interesting, not sure where I got that info but thought it was from the TC install vids on YouTube but who knows. Def easier to torque while the wheel is off

 

[bloc]

Stock suspension definitely needs to be torqued at ride height... maybe came from that?