M38a1/m170 rear pinion nut torque after changing seal

bl5211a · Post by **bl5211a** » Wed May 09, 2012 7:49 pm

Hello: Any recommendations on rear pinion nut torque? I did punch mark the nut & pinion before disassembly. I have placed a new pinion seal and was wondering if I should tighten to punch marks or to a specific torque?

Brian

OKCM38CDN · Post by **OKCM38CDN** » Wed May 09, 2012 9:14 pm

If I remember correctly the torgue should be 200-220 ft lbs...

Check the manual... it is in the downloads section.

Post by **wesk** » Wed May 09, 2012 10:35 pm

The manuals give a spec of 200 to 220 Ft Lbs when setting the pinion but the manual does not give any specific torque figure when re-installing the nut after installing the seal.

The standard torque for a 3/4 x 16 threaded nut is 150-184 Ft Lbs.

Bretto · Post by **Bretto** » Thu May 10, 2012 5:25 am

It's recommended to always use a new nut.

Post by **wesk** » Fri May 11, 2012 12:13 am

By whom?

I have reused the original nuts for over 45 years without a single failure.