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bigwally2 
Bronze Level
Joined: 08 May 2010
Location: nortern nj
Points: 83
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 Topic: 5040 fuel injector pump question
Posted: 07 May 2021 at 2:42pm |
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hey everybody.....been awhile but i need help with a leakin "manual retard device"....sounds like the perfect part for me.....on my 76' 5040 deisel (romainian) fuel injector pump....fuel is leakin down the pin post....does that mean the spring is weak? or is there a worn seal surface somewhere? not sure if parts for this are available still.....thinkin i gotta put a grout sponge in a ziplock bag and strap it to the fuel shut off rods......i backed the shut off up a bit to get the stop off the pin but it continues to leak
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PaulB
Orange Level
Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 4410
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Posted: 07 May 2021 at 8:17pm |
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Older tractors that were built before the mandated USLD, need to have the pumps totally resealed. When the older diesel fuel (that had high sulphur) was being used, the shlphur would absorb into the rubber of the seals and was keeping the seals soft to do their job. Now that you can only get USLD that sulphur is now being absorbed into the USLD and hardening the seals and they now leak. Leaking injector pumps will only get worse as time passes.
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If it was fun to pull in LOW gear, I could have a John Deere.
If you can't make it GO... make it SHINY
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 4768
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Posted: 09 May 2021 at 11:51am |
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The retard device has a seal inside it, after removal an careful disassembly can be replaced. but as mentioned above, it will just start leaking other places. Usually the CAV pumps leak bad at throttle and shutoff shafts.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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bigwally2
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Joined: 08 May 2010
Location: nortern nj
Points: 83
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Posted: 09 May 2021 at 7:49pm |
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yup, i did the shaft o rings already, i wonder if the manual retard seal is in the pack of seals and gaskets i got to do the shafts? if i take the starter off i might get it done without taking the pump off.....thats a little much for me.....i gotta take a look....thanks
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 4768
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Posted: 10 May 2021 at 11:57am |
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5950-34C is the seal number and is not included in the pump seal kit. It needs purchased separately.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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