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Case Tractors Discussion Forum
Show Parts for Model:

Case 580ck won't start

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Doug Overkill

06-11-2006 17:48:11
72.70.32.117



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I just bought a 1971 Case 580 that I was told ran but I never heard it run. (Yes you can yell at me later) After I said I would buy it The nice lady told me that they had always run gasoline in it. I am not sure I believe her as it is a 188D diesel engine. I assume she misunderstood her now late husbands "gassing up the tractor". After I got it home I drained the fuel tank and 2 fuel filters and replaced the gas that was in it with diesel. Engine cranks over but won't start. I bled the system per service manual which is just the bleed screw on top of second filter. Still not running. I cracked one injector line @ injector and cranked it over still no fuel. I unscrewed injector line @ pump and no fuel when cranked over. I cleaned screan at fuel into injector pump and there is fuel getting to there. I have read thru the archives and someone said that cranking the engine with gasoline in the fuel pump can ruin the pump, How can I tell? Also what else do I try or check or do?

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Roger (Mi)

06-11-2006 19:43:48
205.188.117.10



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 Re: Case 580ck diesel with gasoline in tank? in reply to Doug Overkill, 06-11-2006 17:48:11  
Doug,
It sounds like you've done everything right. The Roosa-Master is a self-priming injection pump. If a good flow of fuel is getting to the pump, the engine has good compression, it should start with a proper cranking speed (400 RPM). Gasoline has NO lubercation properties. If gasoline has been in the pump and numerous attempts have been made to start the engine on gasoline, the pump is likely damaged. You will have to remove the pump from the engine and take it to a diesel injection pump repair service.

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Doug Overkill

06-11-2006 20:01:30
72.70.32.117



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 Re: Case 580ck diesel with gasoline in tank? in reply to Roger (Mi), 06-11-2006 19:43:48  
What would you define as numerous attempts to start with gas in pump? All I had done is cranking for 30 seconds 8-10 times? Although the previous owner may have driven it from the barn to the street where I picked it up.



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Phil (Nj,Az,Sask)

06-11-2006 21:24:36
142.165.25.2



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 Re: Case 580ck diesel with gasoline in tank? in reply to Doug Overkill, 06-11-2006 20:01:30  
Doug, It sounds like the pump may be seized & the Drive shaft Key has sheared. You will have to remove the pump (drive shaft will stay with the drive gear) and using a big Screw driver see if you can rotate the Pump. If your lucky the pump is not seized but the friction sheared the Key

The Drive shaft,if the Key is sheared, is harder to replace. The front cover/lower Rad Hose Etc must come off to get to the Shaft NUT.. Remove the gear & replace the Key. ($500. worth of labor for a $1.00 Part)

Hope This Helps,

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Doug Overkill

06-12-2006 09:10:29
128.197.183.213



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 Re: Case 580ck diesel with gasoline in tank? in reply to Phil (Nj,Az,Sask), 06-11-2006 21:24:36  
Can I remove the front cover and try to turn it that way and if the shaft free spins remove the shaft and re-key while the pump is still on? Or do I have to rebuild pump anyway because of the increase in friction?



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Phil (Nj,Az,Sask)

06-13-2006 09:47:16
142.165.25.31



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 Re: Case 580ck diesel with gasoline in tank? in reply to Doug Overkill, 06-12-2006 09:10:29  
Doug, You need to remove the Pump first, thats the easy part. If the pump is not siezed its most likely OK and not need rebuilding.

If the Shaft "half moon" Key has sheared the shaft will turn inside the gear (once pump is removed you can try turning shaft). The Coupling under the front cover is gear teeth to gear teeth and doen't turn unless engine turns.

Hope this Helps,



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Doug Overkill

06-14-2006 09:27:16
128.197.183.213



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 Re: Case 580ck diesel with gasoline in tank? in reply to Phil (Nj,Az,Sask), 06-13-2006 09:47:16  
ok, pump is off and with long screwdriver I can turn the pump. The shaft does not free spin. It is not very tight in hole, ie, it has a bunch of flop. But it does turn with engine with very little backlash, but a bit of flop.
So if pump is not seized but also not pumping, What next?



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Doug Overkill

06-14-2006 09:27:15
128.197.183.213



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 Re: Case 580ck diesel with gasoline in tank? in reply to Phil (Nj,Az,Sask), 06-13-2006 09:47:16  
ok, pump is off and with long screwdriver I can turn the pump. The shaft does not free spin. It is not very tight in hole, ie, it has a bunch of flop. But it does turn with engine with very little backlash, but a bit of flop.
So if pump is not seized but also not pumping, What next?



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