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tomwestky 
Silver Level
Joined: 11 Sep 2009
Location: Crofton, KY
Points: 67
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 Topic: 190 XT Engine Problem
Posted: 10 Nov 2011 at 6:25am |
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Checked the oil in my 190XT the other day, before some heavy work and found the crankcase completely filled....mostly diesel. What could cause that???
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David (in Mi.)
Silver Level
Joined: 05 Jan 2010
Location: Croswell, Mich.
Points: 157
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Posted: 10 Nov 2011 at 6:39am |
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Most likely it is the umbrella seal on the injection pump shaft. They will get old and rot and diesel fuel from the injection pump can get by the seal and will fill the crankcase. One other place it can happen on a J.Deere , not sure if XT's have them, is through the fuel pump that pumps fuel from tank to the injection pump. The diaphram can rupsure and fuel can get to the crankcase that way also.
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MACK
Orange Level
Joined: 17 Nov 2009
Points: 7664
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Posted: 10 Nov 2011 at 7:24am |
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Bushing in front of pump most likely has groves worn in it from seals and needs replaced to. MACK
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HagerAC
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Joined: 14 Sep 2010
Location: SE MN
Points: 1195
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Posted: 10 Nov 2011 at 8:20am |
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Ill second the umbrella seals, but it could also be the bushing as Mach Stated. Might be time for a pump rebuild.
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30+ A-Cs ranging from a 1928 20-35, to a 1984 8070FWA, Gleaner R52
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Clay
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Joined: 11 Sep 2009
Location: Udall, Kansas
Points: 9886
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Posted: 10 Nov 2011 at 8:46am |
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Buy yourself pump rebuild kit. It contains the gaskets you will need to rebuild your pump. Also replace the pilot tube. The pilot tube is held in by epoxy. After the pump is removed, heat the pilot tube with a heat gun and pull the pilot tube out. Clean the area thoroughly. Apply epoxy to the exterior grooves of the pilot tube and re-install into the bore. (NOTE: Measure the pilot tube stick out before removing.)
While you have the pump apart, replace the flex ring.
There is an alternative to the flex ring. Your parts supplier will have a replacement to the flex ring which does not go bad.
Get a copy or borrow a copy of the pump rebuild manual before you remove or rebuild any portion of the pump. Follow the instructions and you should do just fine. Be sure to not the position of ALL parts as you disassemble the pump.
Good luck.
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5097
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Posted: 10 Nov 2011 at 10:12am |
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flex ring being broken plugging return is probably what caused the cup seal to start leaking. time for pump service.
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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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tomwestky
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Joined: 11 Sep 2009
Location: Crofton, KY
Points: 67
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Posted: 12 Nov 2011 at 5:18pm |
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Thanks for all the counsel! I believe I now know where to start. The pump was just redone so the problem has to be in the re-installation. Tom
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5097
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Posted: 12 Nov 2011 at 8:35pm |
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If pump was just rebuilt, then the fuel side cup seal got rolled upon installation,(very common)lot of times when run with a rolled seal, the pilot tube gets ruined. or epoxy didn't hold and pilot tube spun.
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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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