TORQUE Specs seem too high for 8 3/4 Third Member & Axle Flange Nuts?!?

• Saturday at 8:30 AM

• #1

road robert

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I swapped my 3:91 for a 3:55, the torque spec for the nuts is 45 ft. lbs. and 35 ft. lbs. for axles. I don't own a torque wrench so borrowed one (1/2 inch drive) from Auto Zone. I "bench tested" the torque feel in my workbench vise and 45 ft lbs. seem WAY TOO MuCH and think I can hand tighten by feel safer and sufficientlt - don't want to snap a stud! Thoughts?

 

• Saturday at 8:37 AM

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Rebelrouser

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road robert said:

I swapped my 3:91 for a 3:55, the torque spec for the nuts is 45 ft. lbs. and 35 ft. lbs. for axles. I don't own a torque wrench so borrowed one (1/2 inch drive) from Auto Zone. I "bench tested" the torque feel in my workbench vise and 45 ft lbs. seem WAY TOO MuCH and think I can hand tighten by feel safer and sufficientlt - don't want to snap a stud! Thoughts?

View attachment 1856540
View attachment 1856541

Click to expand...

That does seem a little tight. The bolt torque depends on the size of the bolt as well as the grade I don't think those housing studs are harder than grade 5. I have seen misprints on bolt torque in some of the manuals.

 

• Saturday at 9:12 AM

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dadsbee

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FSM states 45ft-lb's. Strange Engineering specs 35.

 

• Saturday at 9:18 AM

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dadsbee

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If you are using fresh nuts the extra 10 ft-lbs was probably spec'd for the extra drag the pinched steel deep nut has vs the axle nuts at 35 ft-lbs that aren't lock nuts.

 

• Saturday at 9:48 AM

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Darter6

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Rebelrouser said:

seen misprints on bolt torque in some of the manuals.

Click to expand...

More than once too.

 

• Saturday at 9:58 AM

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WileE

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Is the borrowed torque wrench calibrated ?

 

• Saturday at 10:20 AM

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dadsbee

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I've never snapped one and I've done a fair number of swaps. Had to zoom in, but yep wrench set at 45 ft-lbs...

I also treat my torque wrench with respect, seeing I bolt propellors on with it.

 

• Saturday at 10:39 AM

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R

R413

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You know how many hillbilly's just rattle them down with an impact, same as lug nuts I have never seen a broken stud on the center section either.