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8N oil pump rebuild

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Rick in Utah

07-19-2000 04:44:55




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I asked about the checking of an oil pump for correct operations, got some good comments/suggestions back. I see that I can order a oil pump repair kit from Farm & Country. It states, along with the I&T shop service manual, that the bushing must be sized to the drive shaft after installed in the housing. I do not know what this Means. Any help in getting this pounded into my brain would be appreciated. Is it something I can do with just common farm tools?
I appreciate all the advise from all of you. The engine is torn down, I need to have the crankshaft worked then I can order my parts for a complete rebuild. Thanks Rick

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Claus is correct........Dell (WA)

07-20-2000 05:57:28




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 Re: 8N oil pump rebuild in reply to Rick in Utah, 07-19-2000 04:44:55  
Rick..... .Claus is correct, most shade tree mechanics don't have reamers (fancy drills sized in thousandths). Oil pumps and water pumps have rebuild kits available but I've never had success. I recommend bite the bullet and buy a rebuilt pump..... ...Dell



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Claus

07-19-2000 07:12:49




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 Re: 8N oil pump rebuild in reply to Rick in Utah, 07-19-2000 04:44:55  
This information goes for a lot of bushings. After bushings are pressed into housings or whatever, they need to be sized for proper fit of shafts. This is because there is an interference fit of the bushing to he housing. The shaft may or may not fit properly. An adjustable reamer (Not a tapered reamer) is used to fit the shaft to the bushing. Most shade tree mechanics do not own one of these. If you replace the oil pump housing it is even worse since you probably have to line bore the bearing cap portion of the pump assembly for proper bearing fit. This is best done when the block is sent out for machining.
Happy Motoring
Claus

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