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Case Tractors Discussion Forum
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injection pump question

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Cariboo4x4

04-30-2017 09:00:51




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On my 1961 Case Backhoe\loader W3 (530) there is a pipe plug directly opposite of the fuel inlet on the roosta master injection pump. I used a 3/8" open end wrench to tighten it a bit because it was dripping diesel slowly. It actually felt loose so tightened it about 1 turn. I can't seem to find any info on this "plug". Before I run my engine does anyone here know if its just a drain plug or a adjuster of some sort? Thank you in advance

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Cariboo4x4

05-01-2017 07:58:06




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 Re: injection pump question in reply to Cariboo4x4, 04-30-2017 09:00:51  
Quoting Removed, click Modern View to see

The plug is metal, it just has a square nub to attach a wrench. Thank you for the offer and help fellows.



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thepumpguysc

04-30-2017 10:17:23




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 Re: injection pump question in reply to Cariboo4x4, 04-30-2017 09:00:51  
That plug is used by the rebuilder to adapt to a pressure gauge to read transfer pump pressure at various speeds inside the pump.. its then plugged..
That baby must be old because they changed that plastic plug to a metal plug w/ an oring back in the 70's.
I have hundreds laying around if you would like one.. TPG



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Dieseltech

04-30-2017 10:13:39




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 Re: injection pump question in reply to Cariboo4x4, 04-30-2017 09:00:51  
That's the pressure tap port for the transfer pressure gauge when the pump is calibrated on the test bench..



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