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Case Tractors Discussion Forum

990 Implematic fuel lift pump

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Author  [Modern View]

10-26-2011 00:32:23

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Has anyone rebuilt a fuel lift pump for the 990? Fuel is leaking a good bit onto the frame rail. I tightened the mounting bolts a little as they were not tight...still leaking. Looking at the online parts diagram from CaseIH, I see a diaphram inside the pump and a gasket between the pump and engine block. Are these two parts all I need to repair the leak? The tractor starts and runs good as it is but the fuel is a potential fire hazard. Will I need to bleed the fuel sytem if I break the fuel lines? Thanks in advance for any advice!!

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10-27-2011 04:01:52

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 Re: 990 Implematic fuel lift pump in reply to caseman-d, 10-26-2011 00:32:23  
Quoting Removed, click Modern View to see

Fiat didn't make the pump. Fiat owns Case/DB/NH/Ford/IH.

Might have been, CAV, Simms, or even AC Delco.

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10-26-2011 17:16:56

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 Re: 990 Implematic fuel lift pump in reply to 7philora89, 10-26-2011 00:32:23  
Case/IH/DavidBrown/Ford/NewHolland.... All Fiat.
I have seen very similar/same pumps on other Brit built machines, MF and Ford. I would bet there is an aftermarket pump that will bolt right up for not much more than a kit for your pump.

I would ask your question over on the DB forum. They talk funny there, but are a helpful bunch. Not much knowledge of the pre-65 tractors here. Lots over there.




You might get lucky and find the parts for the bowl type one are the same as the non-bowl.

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10-26-2011 19:54:16

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 Re: 990 Implematic fuel lift pump in reply to RGMartin, 10-26-2011 17:16:56  
Okay, I will do an internet search for the entire pump by FIAT. The tractor is a 1965 livedrive. If you or others may have any leads to a supplier, please let me know. Again, sincere thanks for your help and insight. Regards, Philip.

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10-26-2011 07:51:30

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 Re: 990 Implematic fuel lift pump in reply to 7philora89, 10-26-2011 00:32:23  
Add to clarify... The number I gave you is assuming your pump has a fuel bowl attached. The other info stands with either pump.

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10-26-2011 16:50:29

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 Re: 990 Implematic fuel lift pump in reply to RGMartin, 10-26-2011 07:51:30  
Thank you for responding again RG! The lift pump is on the right hand side of the tractor and does not have a sediment bowl attached; just a primer lever underneath pump assembly. The sediment bowl is on the left hand side of the tractor near the dual fuel filters and needs to be cleaned. I have wiped the lift pump and fuel lines dry trying to pinpoint the leak without definite success. I do not think I am getting fuel into the crankcase as the oil on the dipstick looks and smells normal. I will recheck the fuel line connections. Are you aware of a rebuild kit for the lift pump without the sediment bowl? Is the manufacturer for both types of lift pump FIAT? Do you have an online aftermarket supplier? The CaseIH website diagram shows my set-up (livedrive model) however, the parts guy said he does not offer a rebuild kit and may or may not be able to get individual parts. Philip.

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10-26-2011 04:09:58

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 Re: 990 Implematic fuel lift pump in reply to 7philora89, 10-26-2011 00:32:23  
The rebuild kit for your pump is #K262265, It has 2 or 3 gaskets, diaphragm, some O-rings, and a couple plastic screens. $15 aftermarket, twice that from mother Fiat.

Are you getting fuel into your crankcase oil? That is the usual reason to need a rebuild(hole in dia).
AN external leak suggests to me that your lines are leaking, your bowl is cracked, or your bowl isn't seating well on the gasket(maybe just tighten).

have you ever cleaned the fuel bowl?

Any time you open a line prior to your inj. pump you will have to prime the tractor(20-30+ strokes on the hand pump till you hear a nice air free stream returning to the tank), but not usually bleed it.

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