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Case Tractors Discussion Forum
Show Parts for Model:

DB 885 Won't keep running.

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Walter Buller

08-10-2018 11:34:43




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For quite a while now I have been unable to keep my 885 running for more than a minute or so, usually a lot less than that. I have had the injectors and the injector pump rebuilt. I changed the fuel filters. I cleaned out the fuel tank and made sure I'm getting a steady flow of fuel to the filters. I removed the air cleaner just to see if air flow might be the problem. Nothing has made a difference. I have to use a little starting fluid to crank it. It runs for anywhere from 15 seconds to a a minute, then starts slowing down and kills. If I spray a little starting fluid into the air intake when I hear the motor start to slow down, it picks back up and runs a while longer. I am at my wits end trying to figure out what the problem is. The lift pump seems to be working okay because after I changed the filters, I worked the lever on the bottom of it long enough to fill the new filters and get diesel coming out of the little bleeder screw at the top of the pump. Any help would be appreciated.

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RGMartin

08-12-2018 14:44:02




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 Re: DB 885 Won't keep running. in reply to Walter Buller, 08-10-2018 11:34:43  
Quoting Removed, click Modern View to see

A 3/8" diameter rod that goes into the side of the block and rides on the camshaft to power the pump.



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Bruce from Can.

08-10-2018 19:33:16




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 Re: DB 885 Won't keep running. in reply to Walter Buller, 08-10-2018 11:34:43  
We had a 950 DB many years ago that acted the same way. Seems to me it was sucking air in through a cracked fuel line. It would start, and only run less than a minute, before quitting like it ran out of fuel



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Dieseltech

08-10-2018 14:15:51




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 Re: DB 885 Won't keep running. in reply to Walter Buller, 08-10-2018 11:34:43  

If NAPA/WIX filters are used MAKE SURE you didn't make the common mistake of blocking the filter top outer groove with an O ring. That's the fuel inlet on those filters, and an O ring there will restrict or stop the fuel flow completely to the injection pump. Made lots of calls to correct that mistake.

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Walter Buller

08-11-2018 14:22:56




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 Re: DB 885 Won't keep running. in reply to Dieseltech, 08-10-2018 14:15:51  
This tractor has 2 NAPA 3166 fuel filters in line. So, if I understand you correctly, you are saying to position the upper O ring up inside the top of the filter housing to make a seal, not around the inside perimeter of the filters before installing them?



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Dieseltech

08-11-2018 15:15:50




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 Re: DB 885 Won't keep running. in reply to Walter Buller, 08-11-2018 14:22:56  
YES! The filter BASE groove needs the O ring to seal the filter top lip. DO NOT put an O ring in the filter top OUTER groove just inside the top lip..



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RGMartin

08-10-2018 13:23:15




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 Re: DB 885 Won't keep running. in reply to Walter Buller, 08-10-2018 11:34:43  
First thing that comes to mind is the push rod behind the lift pump.
Second would be the lift pump, I have had them prime fine, but not push enough fuel to keep the injector pump happy.



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Walter Buller

08-11-2018 14:14:45




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 Re: DB 885 Won't keep running. in reply to RGMartin, 08-10-2018 13:23:15  
I believe this is the problem. I removed the steel fuel line that connects the lift pump to the injector pump, then I worked the lever up and down and barely got any fuel coming out.So I'll put a new lift pump on it and see what happe
ns. But thanks to all of you for responding.



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ArleninOr

08-11-2018 19:27:59




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 Re: DB 885 Won't keep running. in reply to Walter Buller, 08-11-2018 14:14:45  
Do as RG says and check the fuel pump push rod when you get the lift pump off. Should have a flat surface and not concaved.



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Walter Buller

08-12-2018 10:55:33




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 Re: DB 885 Won't keep running. in reply to ArleninOr, 08-11-2018 19:27:59  
You mean the rod that is attached to the inside of the pump?



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