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620 John Deere crankshaft tolerances
I thought that too. Just hoped someone would have something smart and easy to say.- Fidlstyks
- Post #20
- Forum: John Deere
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620 John Deere crankshaft tolerances
I have a 620 and have some problems, maybe the pulley side main is out . I bought this "as is", at an auction. I changed the oil and dug out the crankcase before adding new oil. In the bottom were these little steel bits. I know bits and what broken out pieces look like. They do not have...- Fidlstyks
- Thread
- Replies: 19
- Forum: John Deere
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620 John Deere crankshaft tolerances
Thankyou, they are metal. I did not grind test if steel, hard steel or cast iron. But for sure, no piston ring ever goes back far enough to fall out. If one was far enough back, it would be further back than the crankshaft-connecting rod would allow. As in impossible for it to be a piston ring...- Fidlstyks
- Post #18
- Forum: John Deere
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620 John Deere crankshaft tolerances
The brass strip and many chips were all wrapped around the bearing housing.- Fidlstyks
- Post #17
- Forum: John Deere
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620 John Deere crankshaft tolerances
That is interesting. Picture shows where I think some of it came from, my farm tenant had a plastic bag pulled into his oil pickup. Kid's, this stuff been in there a long time.- Fidlstyks
- Post #16
- Forum: John Deere
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620 John Deere crankshaft tolerances
- Fidlstyks
- Post #11
- Forum: John Deere
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620 John Deere crankshaft tolerances
Well the dial indicator is mounted on the crank case gasket cover area, the point is on the crankshaft as close to the pulley end as I could get it. So when I pry up and down with a bar on the end of the crankshaft, the crank only rises .004. The question wis, going past the crank, all...- Fidlstyks
- Post #7
- Forum: John Deere
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620 John Deere crankshaft tolerances
Are you on Facebook, I posted videos and stills of this in the John Deere group- Fidlstyks
- Post #4
- Forum: John Deere
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620 John Deere crankshaft tolerances
I am trying to attach. Maybe too many pixels- Fidlstyks
- Post #3
- Forum: John Deere
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