WD Main thrust bearing

I've got a problem and found this forum via google. 30 year nechanic, some dealership stuff, mostly import car, the rest domestic auto and light truck. Overhauling my first tractor engine.

Does the block have a dowel to retain the forward thrust bearing via the oil hole ? It is the only bearing shell that does not have an anit-rotation tab.

I am performing this overhaul with the block installed. No problems pulling sleeves or getting the middle and rear main bearings out. The forward thrust bearing shell seems to be positively retained however. I can only effect a very small rotation (a few thou) either way before it stops hard.

thanks in advance.

Prairieman in South Central Kansas

I posted to another board and was advised to remove the timing cover to allow the front of the crank to droop, allowing the bearing to drop below the pin at the top of the bearing shell.

thanks !