I,m asuming this is a 1/2 ton. You dont have to take it out. Remove the drive shaft. Mark the position of the pinion nut in relation to the shaft with a center punch. Remove the pinion nut. An air or electric impact tool is extremly helpful here. Pull the yoke off. It probably will come off with a hammer but possibly may need a puller. Pry out the old seal & tap in the new one. Put the yoke back on with a little RTV around the splines so no grease will seep out between them. Put on the washer & put a little thread locker on the nut & tighten it to the previous marks. If you have a little up & down play in the yoke you can tighten it a little more to remove it. Don,t confuse up & down play with turning play. It will have some free play turning it. Put the drive shaft back in. Now would be a good time to change the grease. You can remove bottom bolt in the cover & it will drain.

They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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