1963 Deere 820/2010 Crawler Loader - fuel/Roosa injector pump problem

To bring to a close of my education and resolution of the fuel problems with the Deere 820/2010 I found that deteriorated flexible fuel lines (2) and the surprising discovery that a formerly working fuel relief fitting off the injector pump was my final problem with shutdown. Removing it completely left me with a dangling fuel return line from the injectors that formerly connected to the barb connector on the relief fitting.

So rather than settling with the loose injector fuel return line I pulled the crimped wire restrictor out of the relief fitting, drilled the restrictor bore out with a 9/64" drill (purely arbitrary on my part as to size), and reassembled everything. It runs and starts perfectly now. The replacement cost for new flexible fuel lines was between $55 and $75 each, but I cut the crimp off the original fuel line fittings and used 5/16" o.d. plastic fuel line to slip snugly over the roaming stub. Perfect, and cheap!

Thanks again to all for the help and insight! -Tom

thepumpguysc said:

Removing the return connector and installing an open barb fitting is strictly for diagnostic purposes ONLY.. u DO NEED to install p# 15830..

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Understood. My updated copy of the new Standyne parts breakout and part numbers shows that part as p/n 15888 "Connector assy,, return line, but perhaps you have a newer update. I'll check with my Standyne shop and order the correct part. But an earlier question I posted asked if the restriction of flow with that fitting creates a back pressure in the pump for fuel regulation. Could you confirm? I don't have access to anyone with our shop who would know. Thanks as always for the assistance! -Tom

Yes Tom, it does create a back pressure that allows the timing advance to work.. just like the timing advance in your car..
Removing the wire, allows all the fuel to flow back to the tank w no restriction.. therefore no advance..

thepumpguysc said:

Yes Tom, it does create a back pressure that allows the timing advance to work.. just like the timing advance in your car..
Removing the wire, allows all the fuel to flow back to the tank w no restriction.. therefore no advance..

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Got the restrictor fitting p/n 15830 as suggested, as well as a new tee fitting so that the injector bleed line has a home. I bought the new one to replace the one I modified by drilling, though if I understand correctly I shouldn't have needed to if it goes AFTER the restrictor fitting, correct? Just to clarify, 15830 goes into the pump cover, 15888 then goes into 15830. Please correct me if I'm wrong. Thanks again, -Tom

Cover, 15830 connector, then the 15888 BUT CUT THE WIRE OUT OF IT..otherwise you’ll have to much back pressure..
The 15830 is a superseded part for the 15888..
U say the injector return line hooks to the barb on the 15888.??
If yes, just cut the wire out of it and hook your inj line to it like normal.