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Help! Four Link bushings falling apart.

Discussion in 'Lowered & Street Systems' started by Brian J Cuellar, Aug 1, 2020.

  1. Brian J Cuellar

    Brian J Cuellar Junior Member

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    I'm working on finishing up my truck and I noticed that the four link bushing are crumbling and falling apart. This is the second set I have put in, as I figured the first set were just dry rotted. It seems to be primarily the bottom link bars and I wondering if the force of the air bags are part of the problem?? I have not driven this truck, just raising and lowing in the garage as I work on it.

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  2. 87scotty

    87scotty Full Access Member

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    dont have that bolt to tight do ya?
     
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  3. Brian J Cuellar

    Brian J Cuellar Junior Member

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    I thought that may be the case too. I did crank them down pretty tight.
     
  4. MikeB

    MikeB Full Access Member

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    If polyurethane, are they name brand like ProThane or Energy Suspension? And did you use their silicone grease?

    Also, the bolt goes through a metal spacer that's slightly wider than the bushings, right? Those spacers keep the bushing from being compressed.
     
  5. Frankenchevy

    Frankenchevy Lying Dog-Faced Pony Soldier

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    Not to be a smart-Alec, but have you had someone look look real close at the welding that knows what to look for?

    I may be wrong, but they look like rubber bushings. I’d imagine you’d want urethane bushings on anything with that much travel.
     
  6. Raider L

    Raider L Full Access Member

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    Brian J Cuellar,

    Polyurethane doesn't fall apart like that, in pieces. It appears to me what you have is what's called "Delrane" or something like that. It's a hard plastic. Some new performance suspension parts use it because it's real slippery but a hard plastic. You don't have to put silicone on it or anything, you just put them in and that's it. It seems they have dried out and are falling apart. The other thing about them is they don't take impact, shock, or twist well. They're just slippery and don't require lubrication.

    Did you put these in or did someone else do it for you? They probably used the Delrane and should have used polyurthane so it could squash and flex around all over like it does. I would change these out soon. Energy Suspension will work with you for whatever you need.
     
  7. eskimomann209

    eskimomann209 Supporting Member Supporting Member

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    Are you running the bolts in basically hand tight? Then dropping the truck on its own weight and then torquing? You don’t wanna torque it unsprung or unbagged in your case.
     
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