U-Bolt torque

[Rikadoo]

Im in the process of some front suspension work and am trying to find the torque required to retighten my front u bolts. I have not measured the size of the actuall bolts, they look to be 3/4 in. 2003 HR Endeavor with the roadmaster chassi i found a chart for trailer u bolts which shows 300 ft lbs, however not sure if application is the same torque.

[vito.a]

Measure the outside diameter of the bolt (not the hex nut) and look up the torque in an engineering table.  The issue is figuring out if they are grade 5 or grade 8.  Usually the head is marked if they are grade 8 and they may be black.   

https://www.engineersedge.com/torque_table_sae_ftlbs.htm

Now the real question is why are you re-torqueing them?  

[Paul J A]

30 minutes ago, Rikadoo said:

Im in the process of some front suspension work and am trying to find the torque required to retighten my front u bolts. I have not measured the size of the actuall bolts, they look to be 3/4 in. 2003 HR Endeavor with the roadmaster chassi i found a chart for trailer u bolts which shows 300 ft lbs, however not sure if application is the same torque.

I would contact; http://sourcerv.com/ Experts on the Road Master chassis.

Edited December 9, 2021 by Paul A.
added info

[Rikadoo]

Reason for the retorque is that im installing a bracket for my Safe t system that attaches to two uf the u bolts an they dont supply a spec for. So before i start the job i want to get all the information BEFORE i disassemble. I borrowed a torque mulitplier so i dont have to pull so hard tightening them. There pretty dirty so i need to brush them clean to prep them for reassembly, i have all the required tools im just needing some specs…

[Ivylog]

Having modified the S-T-+ bracket, it’s probably 500 ft lbs… had to put a pipe on the 3/4” L handle to get them off. Used the same amount of force to put them back on… not worried about the exact torque.