Upper arm bushings, what torque?

Does anyone know what upper arm bushings should be torqued to? I think i over tightened mine and now the shifts on my truck seem a lot ruffer, or atleast i notice them a lot more. So what torque, or how do i know if they are too lose or too tight?

 

Are you asking about the UCA to frame bolt/nut? Or a different bushing? I've got a book w/ all the torque specs if you can describe it a little further

 

No just the nut that runs accross the UCA, it is the nut you would need to remove if you want to replace the stock UCA if that makes sense.

Here's a pic

 

Just got the pic, I'm checking


If it is the UCA to frame bolt/nut then it's 85 ft-lbs for a prerunner

 

No i dont think it's the UCA to frame bolt.

 

85 ft.lbs

 

Yup, 85 ft-lbs or 115 Nm is what the Haynes repair manual has for a prerunner. Hope that fixes your problem.

 

Thanks all, I hope this gets to the bottom of it.

 

not sure if this feasible but you should tighten control arm bushings with the weigth of the vehicle on the suspension

 

What???

 

Very true. Sometimes it can be tough but all suspension bolts should be tightened / torqued to specs. with the full weight of the vehicle on the suspension.

 

Is there a difference in torque since the bolt is being torqued vs the nut?

 

Epic thread revival!

Are you having a hard time getting the socket on the nut side, like the clearance/room?

I used a 3/8 torque wrench when I did mine..

 

It was! 8 years? I just didn’t want to start a new thread.

I was using a half inch torque wrench. I ended up going off of the bolt side, and used red lock tite so it shouldn’t go anywhere.

 

You should be torquing the nut, not the bolt, that's a long bolt. And yes at ride height to prevent unnecessary strain on the bushings.

 

How are you fitting a socket on the nut to torque it though? Lol I’m stumped

 

Crows foot wrench with a torque wrench should reach. 85 ft lbs.

To achieve “ride height” for reinstallation, before removing the UCA make some witness marks between the bushings and mounting gussets after the steering knuckle has been detached. That ‘at rest’ angle is your ride height for the UCA at which it should be retorqued to 85 ft pounds.

 

That last part didn’t occur to me until after I loosened the nut/bolt of course. I was kicking myself for not remembering before hand but that’s my fault. And thank you for introducing me to a crows foot wrench, holy shit that’s a lifesaver!

 

https://www.youtube.com/watch?v=fBjr9-FDWYw

Just in case you want to split hairs. If you're going the extra mile (which you should..) to torque these fasteners to spec, and using a crows foot, remember to keep the crows foot inline with the wrench or you'll effectively add length to the torque wrench. Doing so will over torque the fastener.

 

I just watched this video actually lol. I’ll be sure to set it at 90° which’ll feel like awkward