Changing rear end yoke

i changed the yoke on my 741. no problems unbolted the old worn out one and put on the new one. I think the book says tighten to 280 ftlbs? i only got to about 180 thats all my tourque wrench went to lol
280 lbs.ft must be a misprint in your book. If you tried to get 280 lbs torque on it you'd most likely strip or snap it