Pin Box Bolts

[albertr]

Just noticed that the pin box on our Avalanche 5th wheel has moved about 1/4 inch (tilted).....5/8 inch bolts....Can someone tell me what the torque is on those? Thanks for your help.....Al

[WYO1936]

Just as tite as you can pull them, they are had to brake.

[KenBob]

https://www.americanrvcompany.com/as...s/PDFs/5AB.pdf
Fifth airborne pin installation instructions. May help.

[Jim W]

My pin box bolts were SAE Grade 5 .625" Diameter, which has a torque value of 150 +/- 20 FT lbs. I replaced my bolts with SAE Grade 8, when I installed my TrailAir Pin Box. This provided me a higher clamping load with a SAE Grade 8 bolts. This will aid in prevent the pin box from slipping on the mounting surface like the pin box did with the SAE Grade 5 bolts were installed.
Jim W.

[hankpage]

Originally Posted by albertr

Just noticed that the pin box on our Avalanche 5th wheel has moved about 1/4 inch (tilted).....5/8 inch bolts....Can someone tell me what the torque is on those? Thanks for your help.....Al

This table is offered as the suggested maximum torque values for threaded products and is only a guide.

Torque Values = FT - lbs

SAE Grade 5 120,000 psi Med. Carbon Heat T. Steel 9/16" =114 ---- 5/8" = 154

SAE Grade 8 150,000 psi Med Carbon Alloy Steel 9/16" = 169 ---- 5/8" = 230

[albertr]

Now I have retightened the bolts to 150 ft. lbs. See what happens. THanks...Al

[therink]

My pin box bolts moved as you described on my maiden voyage when new and haven't moved since. I checked them and they are tight. I'm not going to worry about it as I figure they just needed to settle.
Steve