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#1 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Control arm bushing binding
After my "I am idiot, hear me roar" mistake, I pulled out the lower control arm and swapped the shaft over to the -correct- control arm (they're keyed to a rivet in the U-bolt mount so are side-specific).
Making sure the bushings were tightened carefully turn by turn, I kep the control shaft centered between the bushings. Both by counting turns and visually, it appears centered. My problem is that if I torque them down to the 145 ftlb called for in the shop manual, I can no longer rotate the control shaft by hand. If I lock the control arm shaft in a vise I can rotate the whole control arm, but its stiff. Unless the control arm were bottomed out in the bushing, which shouldn't happen if you're centered, I'm not sure what's wrong. Maybe they're supposed to be really stiff when new and torqued down, but it worries me. Anyone run into this before or have any thoughts? Thanks! Dave
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#2 |
Registered User
Join Date: Aug 2011
Location: Northern California
Posts: 189
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Re: Control arm bushing binding
They are stiff when newly installed. If you can move the control arm with the shaft clamped in a vise, you should be good to go.
It is important that you can pump grease into the bushings. With the fittings installed, you should be able to grease the bushings with a hand grease gun. If you can't pump grease in, the bushing is likely bottomed on the end of the shaft. Time to back them out and try again. Obviously, the bushing/shaft are metal on metal. Being able to lube them is key to longevity.
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1971 GMC C2500 Custom Camper - Second Owner. 350/TH350, Dana 60 Rear. |
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