Bolt Torque Specs

[ambler 0]

I'm putting a tractor together right now and I want to do it right. What is the best practice? I wire brushed the old engine mounting bolts. I believe these are grade 5 3/8". by the simplicity chart should these be torqued to 30 ft lbs? Should fasteners be lubricated, Use new fasteners? I found reference to drive shaft bolts to torque to 20 ft lbs even though they are grade 5 3/8ths.

[D-17_Dave 12]

I'd say the drive shaft bolts torque that low to keep the fiber disc's from being mashed.

[HubbardRA 19]

I use locknuts on my engine bolts, that way I don't have to worry about high torques. Just make sure that the torque on all bolts are approximately the same.

[Tom Deutsch 0]

What about using loc-tite to keep nuts from backing off? Also, I tend to use anti-sieze when I reassemble something. Seems to really hold off corrosion. Those torque values sound right to me for that size bolt.

[BLT 717]

Fasteners need to be cleaned and lubricated to get correct torquing.

[ambler 0]

I see if you oil fasteners that the torque value is about half of this table.

[Guest]

I use grade 8 on everything.