Does anyone know what to torque the pinion nut gear on the model t drive shaft?
Chaffin's Ruckstell book says to 70 ft/lbs.
On mine I seat the gear on the drive shaft with a large socket and a mallet to be sure its on the taper right tight, prior to fastening up the nut, and be sure to cotter, and don't back off if the cotter pin won't align.
Stop JUST before the threads let go !
I seem to recall once hearing 100 ft lbs. I usually use a 24 inch bar and pull it tight.
Tighten till failure then 1/4 turn. Jim
I just had a pinion failure on a new gear and wanted to make sure I did not over tighten, but a 24" wrench is what I used.
Better to strip while tightening than while driving! Less replacements involved that way. 70 ft lbs is about right. If it strips, at 70 replace the shaft and/or nut. If it strips at 70 you needed to replace it anyway!