Case IH 585

[kmadison]

I just pulled and cleaned my injectors. I installed new o-rings but one o-ring keeps blowing up and won't stay seated. Why? Thanks in advance.

 

[Harry in Ky]

I doubt the O ring is any part of the problem. It's probably only expected to keep dirt/trash from falling into the hole. That's probably got copper sleeves (item 19) in the head and the injector seats against it. you probably have some crud down there and/or some scratches in the bottom of the sleeve causing a poor seal against compression. You may consider jury rigging a way to dress the surface down there a little. Maybe try some fine valve lapping compound. Sometimes it involves replacing the sleeve. Not exactly a homeowner project.

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[Dieseltech]

The lower TAPERED sleeve end of both injector AND tube are not clean enough yet. The O ring is for dust ONLY. I had the same trouble years ago with my Hydro 84 years ago, had to keep cleaning both until it finally sealed up.