Last night, pulled the leaf spring and oilpan off of my D2 3J. Found that the pan is cracked in the area where the leaf spring rests. Is it right that the spring rides right against the pan?? The crack explains why the springs were just a big bunch of caked oil and dirt!!
My reason for doing this, the engine is seized. I am hoping I can get the liners and pistons out and then salvage the pistons. Cat says I can still get liners.

Yes, that is a fairly common problem on both the D2's and D4's that have the spring mounted to the engine/pan. Weld repairs have mixed success depending on how thin and how much damage.

Pistons, sleeves and rings are not a problem to obtain...it's the bearings that have become near impossible or extremely pricey if you find them.

Alternate source:
Zimmerman Engine Parts. (6/2/07)
Jim Zimmerman has the following new reproduction cylinder liners, plus pistons, plus rings, available (sold as a kit, all three parts per hole):

Sizes:

3 and 3/4 inch bore fits early D2
4 inch bore fits later D2
4 and 1/4 inch bore for the early D4, D6
4 and 1/2 inch bore for the late D4, D6
5 and 3/4 inch bore for the early D7, D8, and 3-cylinder D6 (2H series)

Also, starting engine pistons for D2 and D4, .020, .040, and .060 oversized; $80 each including rings.

Price for early D2 liner, piston, and rings, is $200 per hole.

Call for other prices.

(641) 982-4207 (voice)
(641) 982-4297 (FAX)

Jim does not have a computer and is not on-line to answer questions.

Thanks, I was able to get 2 pistons out. They look quite good considering. The bearing shells looked really good. The crank has some wear but is nice and smooth although I haven't measured anything yet. Plan to run a hone through the liners and see what happens.