I Do This For The Glory
Join Date: Dec 1999
Location: Nobleboro, Maine
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Re: Front differential oil seal leaking like a faucet.
The D30 uses shims so no problem with a crush sleeve. The pinion nut should be on there at about 260 Ft-lbs, which is about as tight as you could get it by hand with a cheater bar (we broke a torque wrench in half on the last D44 pinion nut we tightened). It also means it'll take something similar to remove it. When you get it off and the seal changed out, retorque it to 260 ft-lbs again and check the pre-load, it should be 15-25 INCH pounds for the original bearings. If it isn't you'll need to add or reduce shims.