BurbMan wrote:
While we are on the subject, maybe one of you guys can shed some light why you would use an angular torque rating over straight ft lbs.
For example, on the hitch ball, the torque spec is 450 ft lbs., but John demonstrates that we can get there with 100 ft lbs plus 1/2" or some # of degrees.
Hi Don,
Thanks for the good words.
The 100 ft. lb. then torque to position was an alternate method to help folks who do not have a large enough torque wrench to better tighten a ball nut or hitch head. The method offers an option to do this better than other methods for the application on a towable RV.
To your water pump question, do not know on that one. On extremely high-end systems where fastener preload is very critical, they do not even use torque as torqueing carries a level of error. In these cases, they are going after fastener stretch and creating a certain displacement in thousandths of overall bolt length after all the play is taken out of the joint.
Thanks
John
