190xt overhaul & turbo replacement
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=177068
Printed Date: 23 Aug 2025 at 3:27pm
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Topic: 190xt overhaul & turbo replacement
Posted By: HagerAC
Subject: 190xt overhaul & turbo replacement
Date Posted: 26 Dec 2020 at 10:08am
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Happy holidays to everyone. Currently i have my 190xt torn down and doing an inframe overhaul. After doing some searching i found a source for a pow'r seal kit through my agco dealer so i am excited for that to show up. I was not wanting to use a reliance kit but for a while that's the only option i was finding. When i pulled the turbo off i notice some shaft end play which i know is of concern. I also noticed the crossover tube and intake manifold seem oily inside. However the compressor side of the turbo doesn't seem oily at all, but maybe they won't show oil if leaking. So i am wondering what's the best source for replacement turbos? I do pull this tractor in farmstock occasionally so i was thinking of looking for a turbo from a 7020/m3 which sounds like has a little more boost with a smaller exhaust housing. Are there any other bolt on upgrade turbo options? I don't want something I've got to do any fab work to mount and i want to use the factory exhaust hole in the hood. Thanks ------------- 30+ A-Cs ranging from a 1928 20-35, to a 1984 8070FWA, Gleaner R52 |
Replies:
Posted By: Joe(TX)
Date Posted: 26 Dec 2020 at 10:30am
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What turbo do you have now? Rajay or Air Research (Garret). If it is Air Research it is a TO4B. The are all the same with different size housings to give the A/R ratio for each. The Rajay can be replaced with the TO4B but oil lines are different. Some end play is normal. As long as the is no radial play or leaking it is OK. ------------- 1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A |
Posted By: SteveM C/IL
Date Posted: 26 Dec 2020 at 10:39am
| Lightly move shaft in all directions and see if you can scrape housing with wheel. |
Posted By: HagerAC
Date Posted: 26 Dec 2020 at 10:46am
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Sorry forgot to say it's a T04 air research. It's a series 3 xt. It doesn't touch the housing, but was more concerned if it's leaking oil. ------------- 30+ A-Cs ranging from a 1928 20-35, to a 1984 8070FWA, Gleaner R52 |
Posted By: SteveM C/IL
Date Posted: 26 Dec 2020 at 11:00am
| I really doubt you have a turbo issue. I can't explain the "oily" downstream but know what you're referring to. Can't hurt to "upgrade" turbo anyway. |
Posted By: MACK
Date Posted: 26 Dec 2020 at 9:17pm
| most all turbos put a small amount of oil in cross over . MACK |
Posted By: injpumpEd
Date Posted: 27 Dec 2020 at 9:53am
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An S200 is a fantastic upgrade for the 301 that will be tuned up for farming and occasional pulling. It takes some fabrication to fit, but well worth it to get a modern turbo on it. No engine rebuild is complete without turbo, injectors, injection pump, water pump all belts/hoses replacement. Just my worthless opinion lol! Happy new year! ------------- 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! |
Posted By: HagerAC
Date Posted: 27 Dec 2020 at 11:31am
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Well i actually have must of those items taken care of. I bought this xt in 2017 with a bad engine. I found an engine that was used, was told it starts kinda hard but runs good and it had a rebuilt injection pump on it. So before i shoved it in i did the rear seal, new bearings and new water pump. I have also done the injectors a couple years back and put 7080 nozzles in it. My pump is good, but may have to send it to you ed to get some more fuel to those 7080 nozzles. When i turned it up i could only get about 1/4 turn on the leaf spring. The injection pump they put on it is actually a 185 pump according to the numbers so I'm wondering if it still has some shims under the leaf spring. It has good power and does pretty good pulling but the 4020's are starting to catch up to the xt. ------------- 30+ A-Cs ranging from a 1928 20-35, to a 1984 8070FWA, Gleaner R52 |
Posted By: injpumpEd
Date Posted: 27 Dec 2020 at 11:40am
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no shims, just smaller leaf spring. It has to be taken apart to make alterations. ------------- 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! |
Posted By: darrel in ND
Date Posted: 27 Dec 2020 at 3:37pm
Did all of that and more to mine a few years ago. Not sure what turbo is on it. Got a pile of $$$$$ into it, but shouldn't have to do it again in my lifetime. I haven't worked it real hard since the big re-build. Did pull a couple hills with it with a hay wagon behind it with 11 big round bales on it. Belched out some black smoke and kept on it's way like nothing behind it. Darrel |
injpumpEd wrote:Posted By: pjm5768
Date Posted: 01 May 2023 at 7:47am
| I’ve been looking for a candidate for my 2800 to 2900 rebuild. Which S200 setup do you recommend? |