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| John Deere Tractors Discussion Forum |
Topic: 730 D oil seal
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| mbdeere
09-09-2012 17:09:45
184.63.147.142
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How big of a job is it to replace the crankshaft oil seal that is responsible for allowing crankcase oil to get into the transmission? Mine is pumping about a one quart per hour.
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| Geoff Mathews
09-10-2012 02:00:05
81.158.132.232
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Re: 730 D oil seal in reply to mbdeere, 09-09-2012 17:09:45
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| I meant crank - not crack
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| F-I-T
09-10-2012 06:51:24
184.6.240.123
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Re: 730 D oil seal in reply to Geoff Mathews, 09-10-2012 02:00:05
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| Quoting Removed, click Modern View to see
Don't forget that those mains have a factory spec of .0055"-.0075" clearance, so they can feel pretty sloppy even when they are correct.
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| Geoff Mathews
09-10-2012 01:58:43
81.158.132.232
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Re: 730 D oil seal in reply to mbdeere, 09-09-2012 17:09:45
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| This probably does not help you - but my 730 D is doing the same. There is excessive play in the left hand main so I suspect that bearing wear and crank movement might be contributing to the seal failiure. I plan to take the crack out and grind if necessary. My dilema is sould I consider a re-bore whist the engine is apart? I am also tempted to put 830 valves in and a hotter cam.
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