1566Hog Posted November 6, 2022 Share Posted November 6, 2022 I have a 1066 that got ran out of fuel. When I went to prime the fuel system, the hand primer just leaked fuel everywhere. Every time I stroked the hand pump, diesel was spraying everywhere. It was to the point that I thought about stopping because it was making such a mess. So, what is worn out? Is it the brass sealing washer/ring at the bottom of the primer, or is it o-rings somewhere? Or does it call for a new primer? Thanks. Quote Link to comment Share on other sites More sharing options...
ksfarmdude Posted November 6, 2022 Share Posted November 6, 2022 4 minutes ago, 1566Hog said: I have a 1066 that got ran out of fuel. When I went to prime the fuel system, the hand primer just leaked fuel everywhere. Every time I stroked the hand pump, diesel was spraying everywhere. It was to the point that I thought about stopping because it was making such a mess. So, what is worn out? Is it the brass sealing washer/ring at the bottom of the primer, or is it o-rings somewhere? Or does it call for a new primer? Thanks. Those are easliy replaceable get a new one and screw it on Quote Link to comment Share on other sites More sharing options...
1566Hog Posted November 6, 2022 Author Share Posted November 6, 2022 22 minutes ago, ksfarmdude said: Those are easliy replaceable get a new one and screw it on I was just wondering what was worn out. If it was just an o-ring, I’d replace it and try it. Just was curious about what is actually causing it to leak. Quote Link to comment Share on other sites More sharing options...
snoshoe Posted November 6, 2022 Share Posted November 6, 2022 17 minutes ago, 1566Hog said: I was just wondering what was worn out. If it was just an o-ring, I’d replace it and try it. Just was curious about what is actually causing it to leak. More than likely the quad ring on the plunger. 1 Quote Link to comment Share on other sites More sharing options...
Farmall Doctor Posted November 6, 2022 Share Posted November 6, 2022 Just replace it. Easy Peasy. Quote Link to comment Share on other sites More sharing options...
acem Posted November 6, 2022 Share Posted November 6, 2022 I replace the ring on the plunger. 1 Quote Link to comment Share on other sites More sharing options...
Dan Robinson Posted November 6, 2022 Share Posted November 6, 2022 Pretty simple to reseal it. Quad ring on the plunger itself. An oring at the top for the dirt seal. And a copper washer at the bottom of bore to seal the barrel. Quote Link to comment Share on other sites More sharing options...
ksfarmdude Posted November 6, 2022 Share Posted November 6, 2022 12 hours ago, 1566Hog said: I was just wondering what was worn out. If it was just an o-ring, I’d replace it and try it. Just was curious about what is actually causing it to leak. A lot of times the plastic plunger is scored or damaged not worth screwing with replace the whole plunger body Quote Link to comment Share on other sites More sharing options...
stronger800 Posted November 6, 2022 Share Posted November 6, 2022 Could somebody post a part number please? I’ll write it right in my cabinet, because I’m sure I’ll need one someday. Or maybe I’ll even buy one, that would be easier because then I’ll never need it 1 Quote Link to comment Share on other sites More sharing options...
IDPlowboy Posted November 6, 2022 Share Posted November 6, 2022 Primer assm # 680391C91 Parts below are for replacing the quad ring in the plunger sq. ring # 1802465C1 Copper ring # 681298C1 o-ring # 238-5113 I have been able to replace the seal and oring with good results. Might find the parts cheaper at pump shop. Quote Link to comment Share on other sites More sharing options...
stronger800 Posted November 6, 2022 Share Posted November 6, 2022 Thank you Quote Link to comment Share on other sites More sharing options...
Dan Robinson Posted November 7, 2022 Share Posted November 7, 2022 12 hours ago, ksfarmdude said: A lot of times the plastic plunger is scored or damaged not worth screwing with replace the whole plunger body Plastic plunger? Can't say I've seen one made out of plastic. Quote Link to comment Share on other sites More sharing options...
ksfarmdude Posted November 7, 2022 Share Posted November 7, 2022 9 hours ago, Dan Robinson said: Plastic plunger? Can't say I've seen one made out of plastic. Your right My Bad I was thinking of the inline pump , good call Quote Link to comment Share on other sites More sharing options...
DirtBoyz07 Posted November 7, 2022 Share Posted November 7, 2022 That plunger is steel unless there is someone making an aftermarket plastic one ? After you thread that plunger assembly out of the transfer pump , then extend the plunger and put a shop towel around the plunger and clamp it in the vise . The top knob threads off the plunger and then slide the plunger out the bottom . Like the other guys are telling you just replace the square oring and the copper washer in the bottom of the transfer pump and your good to go 👍 Your local fuel shop will have those two parts you need too if you can’t get them from CNH Danny Quote Link to comment Share on other sites More sharing options...
Matt Kirsch Posted November 7, 2022 Share Posted November 7, 2022 On 11/5/2022 at 9:43 PM, Farmall Doctor said: Just replace it. Easy Peasy. Bunch of no-skill PARTS CHANGERS, I tell ya! Seriously, I agree. It's not worth trying to "fix." Just swap out the pump as a unit and save yourself some headaches. 1 1 Quote Link to comment Share on other sites More sharing options...
acem Posted November 7, 2022 Share Posted November 7, 2022 My closest dealer is an hour and a half away anddon'tstock this stuff. I get most of my orings, etc from RGA about half as far away. RGA has an amazing amount of stuff. Any good hydraulic shop should have these as well. https://rgausa.com/ Quote Link to comment Share on other sites More sharing options...
Mike56073 Posted November 7, 2022 Share Posted November 7, 2022 4 hours ago, acem said: My closest dealer is an hour and a half away anddon'tstock this stuff. I get most of my orings, etc from RGA about half as far away. RGA has an amazing amount of stuff. Any good hydraulic shop should have these as well. https://rgausa.com/ Any International Truck dealer will be able to get these, too. 1 Quote Link to comment Share on other sites More sharing options...
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