190XT turbo and lines

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   In another post I mentioned I was retrofitting an AiResearch TO4B80 onto a 190XT that had a rayjay turbo before.
  Got me to thinking that I don't know what condition the AR turbo is in. It came off a 7000 engine.
  Should I just put it on and try it out or is there a way to test it before putting it on. Or should I just send it out and have it rebuilt ,  or ...
   Buy a new turbo or maybe a rebuilt turbo?
What would the best and most practical solution be.

  And while I am asking, should I also plumb up the turbo the way the 7000 was or just fit it up to the existing oil lines from oil gallery on engine?  
  Does someone have the oil lines and turbo to manifold air tube for the XT with an AR turbo that don't cost an arm an a leg?  Thanks, JC

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JC-WI Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: wisconsin Points: 33888	Post Options Post Reply Quote JC-WI Report Post Thanks(0) Quote Reply Topic: 190XT turbo and lines Posted: 17 Jun 2010 at 11:26pm
	In another post I mentioned I was retrofitting an AiResearch TO4B80 onto a 190XT that had a rayjay turbo before. Got me to thinking that I don't know what condition the AR turbo is in. It came off a 7000 engine. Should I just put it on and try it out or is there a way to test it before putting it on. Or should I just send it out and have it rebuilt , or ... Buy a new turbo or maybe a rebuilt turbo? What would the best and most practical solution be. And while I am asking, should I also plumb up the turbo the way the 7000 was or just fit it up to the existing oil lines from oil gallery on engine? Does someone have the oil lines and turbo to manifold air tube for the XT with an AR turbo that don't cost an arm an a leg? Thanks, JC

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Joe(TX) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Weatherford. TX Points: 1682	Post Options Post Reply Quote Joe(TX) Report Post Thanks(0) Quote Reply Posted: 19 Jun 2010 at 8:43pm
	Check the impeller shaft. If there is any play at all it needs a rebuild. Axial or radial. If you an feel it. it is too much. A rebuild would be cheaper. I am not sure but my 190XT, 200 And 7010 are plumbed the same. All have the Air Research turbo. The routeing should be the same on the Ray Jay but may have differant tubes.

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 20964	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 19 Jun 2010 at 9:04pm
	There will always be some movement in the shaft and bearings on an Air-Research because they are a floating brg !!! If the compressor discharge nozzle isn't oily on the inside, it's probably fine.....do NOT condemn one for looseness in the brgs/shaft. They are often good for 7-8000 hrs of use.

Hurst Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Midway, Ky Points: 1213	Post Options Post Reply Quote Hurst Report Post Thanks(0) Quote Reply Posted: 20 Jun 2010 at 5:48pm
	I found out tree branches also help you find out when your exhaust housing is about rusted through too :). If you just put it on and run it to test it, a couple things. Make sure you prime the oil line to it so it doesn't run dry off the start. I also poor in some fresh oil in the bearing on new turbos and spin the bearing to make sure it gets some oil down in there, then crank the engine over with the pump in the off position until the tractor shows oil pressure. Also, make sure the exhaust housing isn't about rusted through, as on the 301's that's what supports the exhaust pipe, and when they rust through pretty good, they can break off easily and leave you without a turbo. Also, be ready to stall the engine with the tractor in road gear in case you get run away if the turbo has a bad oil seal. Don't want to suck the engine dry of oil. I would test to make sure you can stall the tractor easily before you put the new turbo on if at all possible. And don't try to stall it with a rag/hand in the intake. Heard some bad stories. Hurst
	1979 Allis Chalmers 7000 5800 Hours

Joe(TX) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Weatherford. TX Points: 1682	Post Options Post Reply Quote Joe(TX) Report Post Thanks(0) Quote Reply Posted: 21 Jun 2010 at 10:12pm
	What I said was if you can feel any play, It needs repair. Most people cannot feel .005-.009 end play. The radial endplay is .020 max