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John Deere 350 Injection Pump

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Old 10-14-2017, 09:57:05 PM
Jim Henthorn Jim Henthorn is offline
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Default John Deere 350 Injection Pump

I have a John Deere 350 Dozer ( late 60s or early 70s) and fuel is leaking where the control rod attaches to pump. Trying to find out what is involved to repair. Thanks Jim
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Old 10-14-2017, 11:33:36 PM
Heins Heins is offline
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Default Re: John Deere 350 injection pump

We have the same problem with a 430 CASE tractor, we think it is the low sulfur fuel. The Roosamaster pump needs resealed. I think we will have to remove it and get it to a place that rebuilds injection pumps.
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Old 10-15-2017, 11:00:32 AM
ronm ronm is offline
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Default Re: John Deere 350 Injection Pump

It's not a big deal to change the throttle shaft o-rings, which are probably what's leaking...I've done them on the engine. The low-sulfur diesel shrinks o-rings & causes leaks. If the pump has 4-5K hr., it's probably time to pull it & do a rebuild anyway, the governor ring is probably ready to go...
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