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jdemaris
01-25-2004 07:41:36
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Re: Can you roll in mains on a 466D in reply to Jimmy, 01-25-2004 07:19:44
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The bearings will have numbers on them, and if from Deere, might have Deere part numbers. Most brands of bearings, if undersize, will be marked so - e.g. & i.e. .010, .020, etc. Deere used to sell slightly undersize bearings for doing in-frame work where some wear was evident, e.g. .001 and .002 undersize, but I don't know if they're made anymore. If you don't have good measuring tools, get some Plastigauge - it works well enough and is cheap. As far as bearing inspection goes, look to see that the crank journals are smooth. If any serious wear is evident you'll see it. Also, check the backs of the rod bearings and the rod-surface and look for any evidence of bearing-shell movement. Rods on the bigger diesels can get out of round, espcially if a bearing has been spun or has been hammering. No big deal to shave the caps and resize them if necessary. For the mains, check for pitting, especially on the uppers, and also check for-and-aft movement and make sure the thrust bearing is okay. On some engines, the thrust bearings inserts are separate from the crank journal bearing, and on others it's all one piece. As far as spinning the main bearings in or out . . . make a little tool out of a small machine screw, like a size 8/32, 10/24 or something. Pick one that will fit into an oil journal hole, and grind the head of screw flat (and probably at an angle) so, you can stick it in an oil journal hole, rotate the crankshaft, and it will travel up, around out of sight, and push the bearing out. Make SURE the bolt head is ground flat enough so it fits between the crank and block with no interference.
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