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Case Tractors Discussion Forum
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900 inline Bosch pump rebuild cost

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toolz

07-04-2009 22:02:23




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I have a '59 900B that runs great, but the pump crankcase gets fuel in it, and the throttle shaft is really sloppy. If I take the pump off and send it to a rebuild shop, what should I expect to pay?




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LenND

07-05-2009 18:38:05




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 Re: 900 inline Bosch pump rebuild cost in reply to toolz, 07-04-2009 22:02:23  
Won't hurt a thing just make sure you change the oil in pump when you change engine oil. And use the same weight oil as the engine.



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mEl

07-05-2009 14:47:25




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 Re: 900 inline Bosch pump rebuild cost in reply to toolz, 07-04-2009 22:02:23  
If I am correct you have the pump that does not lube from the engine, you have to change the oil in the pump when servicing the engine. I have a early 830 that way and getting fuel dilution is normal on those pumps. Not to say they don't wear as they age but they will naturally dilute the pump camshaft oil cavity with fuel, that is why they have a drip tube with a trap in it to allow excess to drip away without overfilling the pump. If the pump does not drip constantly I would not be to concerned about it, just service it a bit more often. Mine definately gets the oil thinned down but works great and I have no intention of fixing it. The throttle shaft has o rings both on the shaft and in the insert that goes into the pump, that I would get fixed as it does make a mess. AS I previously stated the early pumps were that way, you had to service them as you did the engine. Handle it the way you want, just my opinion for what its worth. You may want to consult a pump rebuilder and see if the leakage is abnormal but it is normal for that style pump to dilute. mEl

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Camboted

07-05-2009 19:22:28




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 Re: 900 inline Bosch pump rebuild cost in reply to mEl, 07-05-2009 14:47:25  
It seems we have adapted the old series pumps to recycle engine oil like the newer ones. If I remember it was not difficult. Am I imangining thing?



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mEl

07-06-2009 04:58:12




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 Re: 900 inline Bosch pump rebuild cost in reply to Camboted, 07-05-2009 19:22:28  
Hi Ted, good to hear from you, I don't see why the older pump could not be converted if one could figure out how to maintain an oil level in it. If the shaft seal was removed on the driveshaft the oil would naturally flow back to sump. The later pumps used a metering fitting to supply the pump from the engine supply.It had a plunger that rode on the camshaft to meter the oil. Just my musings! mEl

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toolz

07-05-2009 18:47:53




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 Re: 900 inline Bosch pump rebuild cost in reply to mEl, 07-05-2009 14:47:25  
mEl- Yes, this is the pump that has it's own oil, and I do service it when I change engine oil. I didn't realize that fuel dillution was normal, so maybe I don't have anything to worry about. The overflow tube rarely drips (except when I overfill it!) so it must not be too bad. I wasn't too concerned about the pump until I saw how sloppy the throttle shaft was, but if I can repair that, you helped me save a bunch of money! Thanks much- Kevin

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caseman70

07-05-2009 13:31:56




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 Re: 900 inline Bosch pump rebuild cost in reply to toolz, 07-04-2009 22:02:23  
don"t know what type of pump it has on it but i just put a robert bosch pes6a850 inline pump on ebay.



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Roger H

07-05-2009 06:43:34




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 Re: 900 inline Bosch pump rebuild cost in reply to toolz, 07-04-2009 22:02:23  
Dont know about cost to rebuild the pump but it will cost a LOT less than rebuilding the bottom end of the engine if fuel dilutes the oil & causes damage to the crank or rods !!!



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toolz

07-05-2009 18:52:26




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 Re: 900 inline Bosch pump rebuild cost in reply to Roger H, 07-05-2009 06:43:34  
Roger- Not having a problem there, just dilluting the pump oil, but according to those above, I was worrying about nothing. Leaving it alone is sure a lot cheaper than rebuilding it! Thanks for the reply- Kevin



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