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Case Tractors Discussion Forum
:

870 fuel screw

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870blackknight

03-11-2012 09:45:28




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Where is the fuel pump screw on my 870 diesel? Thanks




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Dieseltech

03-12-2012 04:24:26




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 Re: 870 fuel screw in reply to 870blackknight, 03-11-2012 09:45:28  
Gene is correct about rack screw at front of pump, Bosch used screw and shimms to set 100 RPM cranking delivery on testbench originally. High speed stop screw is on housing to limit throttle lever travel. RSV governor also has sensetivity adjustment internally for quicker response if desired, but may have surge trouble if set too hot.



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RGMartin

03-11-2012 16:48:31




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 Re: 870 fuel screw in reply to Hoofer B, 03-11-2012 09:45:28  
Quoting Removed, click Modern View to see

Big +1 to that.



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jon f mn

03-11-2012 12:45:39




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 Re: 870 fuel screw in reply to 870blackknight, 03-11-2012 09:45:28  
When doing this be carefull with the 4 bolts on the cover. They screw into aluminum and strip out very easily. Trust me on this one.



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Case Nutty 1660

03-11-2012 10:39:00




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 Re: 870 fuel screw in reply to 870blackknight, 03-11-2012 09:45:28  
third party image

if you can't read this let me know I can e-mail it to you make sure you don't turn more than it say's at a time cnt



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Lamont

03-11-2012 19:58:08




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 Re: 870 fuel screw in reply to Case Nutty 1660, 03-11-2012 10:39:00  
Got anything like that on a 2090? Is it about the same? Pump housing looks the same. Thanks.



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Case Nutty 1660

03-11-2012 20:39:00




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 Re: 870 fuel screw in reply to Lamont, 03-11-2012 19:58:08  
I have it for the 2090 but it is the same adjustment procedure



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Lamont

03-12-2012 04:03:49




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 Re: 870 fuel screw in reply to Case Nutty 1660, 03-11-2012 20:39:00  
OK. The title on the page says "Engine Speed Adjustment." Then, I notice it says "Continued." I know this particular page is addressing what I call the "Fuel Load." What is there, or is there anything, internally, other than the governor, that will adjust the RPM? Thanks.



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870blackknight

03-11-2012 12:42:38




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 Re: 870 fuel screw in reply to Case Nutty 1660, 03-11-2012 10:39:00  
Thank you cnt I will try that



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Gene Dotson

03-11-2012 19:10:46




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 Re: 870 fuel screw in reply to 870blackknight, 03-11-2012 12:42:38  
If the load screw doesn't give the desired fuel delivery, you may have to open the fuel rack stop on the front top of the pump. There is a screw with shim washers under it. Remove shims as needed to get required fuel. This controls maximun fuel delivery under heavy load like tractor pulling. When I was pulling my 700, I would take the cap off during the pull. Would really put out the smoke.

Gene

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