Didn't know I run dry axle, hope it gets some more life before repair is ok, lots of metal in my oil. It leaked after topping up when I first bought the truck, drove it 600 miles in one year, tested it the next year and found it was nearly a liter off. Oh. To install I used a punch, since there is metal I wasn't worried about crushing the sleeve. It was difficult to find parts for my 77 K20, I didn't realize the axles in it were from 72.