I've always used a big pipe wrench to hold a yoke while I torque the pinion nut- - - - -hasn't slipped yet, even when using a 48" pipe wrench and applying 1200 Ft/lbs. to the pinion nut on a Freightliner with an Eaton dual drive axle. That took a 1" drive with a 4 foot cheater bar.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!