If you have the right size box end wrench (I use a 15/16" on mine, & it's about 16" long) put a fair amount of tension on it , then tap the end lightly with a hammer. And when you put it back just snug it up, then add about 1/8 turn. On my '78 this same wrench also works on the differential plugs when you get around to those. Be careful about using sockets on either the tranny or diffy nuts- they are very shallow nuts, often the inside rim of a socket- especially a large one like these require- will be chamfered so you are only catching the very top corners of the nut & it's easy to round the corners. If this is the case grind the end off the socket until you get full contact with the flats of the nut. And a 6-point is always better than a 12-point, whether socket or wrench. The same chamfer can occur with a box end wrench, if it's a problem grind it down some. A word about Chilton's: the pictures are great, but some of the info can have misprints or is just wrong. Same with Hayne's (which BTW bought out Chilton's), and they often cover several different years of several different vehicles with generic information. A factory service manual is much better (I got a replacement for $20 here on LUVtruck), but even they sometimes have translation errors. At least they are vehicle-specific. My point is to consult several different sources on something critical. So far you have done the right thing by verifying the Chilton's info here on the forum. I doubt you have enough room for a pipe wrench with the tranny in the vehicle, & it seems like there are protrusions on the tranny case that would prevent this anyway.
_________________ '78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, rough body, bought new 12/4/78. '87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch,more to come.
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