Crush sleeve is a preload-setting device, and the torque varies. It depends on how much crush is needed to properly preload the pinion bearings. Somewhere around 200-210lb-ft, you should have begun tightening your pinion nut in small increments and regularly checking bearing preload - turning force - with a lb-in torque wrench to assess the amount of preload on the bearings.
STOP RIGHT NOW if you don't have an lb-in torque wrench that can be read (beam-type, dial-type. A "micrometer-type" won't work) and go get one - and get a spare sleeve, while you're about it. If the bearing preload is set too high, you must replace the sleeve and reset it! You can't "uncrush" a sleeve.
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