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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Broken radius arm bushing cup....again

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Old Apr 4, 2010 | 05:21 PM
  #1  
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Broken radius arm bushing cup....again

Maybe I'm torquing the nut too tight or my Harbor Freight torque wrench is way off, but this is the 2nd cup I've split.

After it happened the first time last November I called Moog and told the guy what happened. He pretty much said it was impossible because the plastic cup is very strong. I tightened it to 100 ft.lbs. like the directions said.

I checked the bushings again today and yep, it's cracked.

Any ideas?

Thanks
 
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Old Apr 4, 2010 | 06:12 PM
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Thats strange. When i did mine i just tightened them as tight as i could. That was a couple months and a couple thousand miles ago and havent had a problem.

Which one has cracked? Drivers or Passenger?
 
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Old Apr 4, 2010 | 11:06 PM
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I know the driver's side cracked but I can't tell because of the heat shield. I'll check in the morning.
 
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Old Apr 5, 2010 | 05:32 AM
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I'm not sure what part your talking about thats cracking?

I thought the heat sheild cap was only on the passenger side since its near the exhaust.

I replaced my raduis arm bushings with polyurethane ones from Energy Suspension about 8-9 years ago and about 100k or more miles ago. They still look nearly the same only a little dirty.
 
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Old Apr 5, 2010 | 08:53 AM
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The passenger side is the only side with the heat shield.

The plastic cup that the back bushing sits in. It's the first thing on the back side of the bracket the radius arm goes through.
 
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Old Apr 5, 2010 | 10:38 AM
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Ive heard of alot of people having them crack on them too.

I just redid mine yesterday and I didnt crack one but I also didnt torque them too 100 lbs either.
 
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Old Apr 5, 2010 | 01:05 PM
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Drivers side was broken

 
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Old Apr 5, 2010 | 01:06 PM
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Drivers side was broken

 
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Old Apr 5, 2010 | 11:11 PM
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Thats interesting, i used the MOOG one's tightened them, then cam back a couple weeks later and re tightened them. They dont show any signs of problems. I'v seen alot of threads about these suckers. Yet no one has found a solution. I wonder what causes it.
 
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Old Apr 5, 2010 | 11:16 PM
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I don't think my poly ones have that plastic part.
 
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Old Apr 5, 2010 | 11:26 PM
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These are the blue Moog. It's that thermoplastic and not the regular rubber.
 
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Old Apr 5, 2010 | 11:30 PM
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Mine were Duralast from Autozone. Truck rides good now
 
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