mf50 z134 crankshaft

hello, and thanks for any suggestions in advance. have a 59 mf50,z134, started to slightly knock, turns out to be #2 rod bearing warn,(3,600) hrs. and ready for repairs. The questions I need help on at this point, The rebuild kit w/crank sold here has thrust washers, my crank has the center main with a outer lip to act as the thrustwasher, is this the correct replacement? Yesteryears said to forum this, and the same kit requires the wristpin bushings be machined and pressed in , stock are clipped in , are they oversized? this seems to be a lot of extra trouble, there salesperson said if the stock bushings were good, they could be reused . Well I have quite a spare time job ahead and Will appreciate help to get it going (literally!) with the correct replacement parts, Or is there a GOOD machine shop to rework the crank hopefully in the upper ny area. Thanks again , and let,s keep those old ones going! GENE

If you caught the knock before the crank was damaged beyond turning, you will be money and quality ahead to have your crank ground.

As for finding a good machine shop, go where the racers go! There are a lot of shops that somehow stay in business in spite of doing horrible work, so do some research!

When you find a shop you want to use, take the crank and rods to them, have them measure everything, see what they recommend. They can either supply the correct undersize bearings or tell you what to get. Be sure to give them the model and serial # of the engine if available.

The wrist pin is held in with circlips, the bushing is pressed into the rod. It is then precision honed to size, a very close and critical fit. Something that the machine shop will do for you, takes special equipment. Also have then check the rods, they may need to be resized, especially the one that was knocking.

Are you replacing the pistons and liners? If this is a working tractor, now is the time to do it. If you're not replacing the liners, they at least need to come out and replace the orings where they seal to the block. Also would be a good time to have the valves gone through. How is the oil pump? Remember, when the bearing failed, it probably shed some metal. That metal is now lurking in the oil galleys, so clean everything like it's life depends on it!

If you don't have a shop manual, it would be a very cost effective investment!