IH 250B

[Dirt_Floor_Poor]

On 4/11/2022 at 6:45 PM, mikengle said:

Dirt _floor_Poor If you have not found your under carrige parts for your 250 loader, I may have all you need I am parting out 2 TD20B's w/ 1 new bottom  and a set of new tracks never installed plus lots of other parts. Phil  814 328 5073

No, I haven’t located all the parts. I had pretty much given up on finding 7.5” pitch track chain or IH rollers. I was trying to find the time to try to convert it to something else. Thanks to @DWF for alerting me to your post. I have been busy applying anhydrous ammonia and have not been checking in as often. I will try and give you a call. My exhaust manifold is also in terrible shape. I do intend to try and put this machine back to work. What is the location of the parts? I see the 814 area code is Pennsylvania. That’s quite a distance from me, hopefully we can work something out. 

[Dirt_Floor_Poor]

I was able to spend a little bit of time on this loader over the last week. I got the exhaust manifold off and it is every bit as bad as I thought it might be. 

This is what it looked like when I started. You can see the mess that the “exhaust leak” has been making. Someone has run it quite a while in this state. I doubt if it has run one hour since I have owned it.

 

This is what the patch job on the exhaust elbow looks like. There’s not much left of the elbow, it’s just about gone. 

This is the back side of the center section that you can’t see. The center section is cracked completely in half. The turbo is the only thing holding it together.


 

Everything removed.
 

 

The front and back sections are also cracked. I’m almost sure that the hood will have to be removed to put it back together, when the time comes. Those loader arms are in the way of everything. The air cleaner is bolted to the bottom of the hood, it doesn’t look like it comes off very easy. It surely must weigh quite a bit, as well as the sweeps being in the way to lift it off. 

 

[Ian Beale]

Check this welding rod out

https://www.lincolnelectric.com/en-us/consumables/stick-electrodes/Pages/ferroweld.aspx

A neighbour has done some magic retrievals on things like you're looking at

[Dirt_Floor_Poor]

I have a NOS center section that I got from F P Smith. It is for a higher serial # machine, so the old turbo won’t fit the newer manifold. I wanted to get it apart to see how bad it was. It looks like the turbo gasket has been gone a long time. The exhaust side of the turbo looks to be damaged from leaking so long, so it probably needs a new turbo anyway. If I get a new one I can get one that matches the new manifold. I think I can get a NOS front section as well. I think I can also get a NOS turbo elbow for a higher serial #, I think it can be made to work. I am still hoping to locate a better used rear section on the manifold. The last of the NOS engine parts for these DT-429s are almost used up. 

[Dirt_Floor_Poor]

After an extensive search, I think I have located enough good pieces to put the manifold back on. I nearly gave up on finding the rear section, but decided to call a local salvage yard. I figured there was no way they would have that, but I may as well ask. They had a rear section and front section on the shelf. I couldn’t believe it. I have a new turbo elbow coming, but I’m not sure if it’s like what I have or not. I’ll have to see when it gets here and also I still have to figure out what to do about a turbo. I got new exhaust gaskets, from Olson’s Gaskets. They are here. So, it seems like it may be headed in the right direction. More pictures to follow…

[DWF]

Sounds good. It's amazing that there is still something a person needs. Dirtboyz has a TD-20 with that engine too.Good Luck with it!

DWF

[Dirt_Floor_Poor]

The used manifold is coming from Cook Tractor in Clinton, Mo. They are a pretty large yard that I have bought quite a bit from over the years. I feel kind of dumb for not checking with them, but since DT-429’s weren’t used in very many Ag applications I just didn’t think they would have it. Just for fun I asked what machine the manifold was removed from, but they said they didn’t know. My guess is it has been on a shelf for a very long time. I got some more NOS from F P Smith too. I guess if someone is looking for parts, don’t rule anyone out. Hopefully everything will be here next week. 

[pede]

On my 20c, I had a machine shop make a modern style coupler with a band clamp,  mill the turbo and welded half of the coupler to it, then I fabed everything after that, since I couldn't find the exhaust elbow. I can tell you, ignoring an exhaust leak will destroy the radiator.    

[Rawleigh99]

How does it do that Pede?

[Dirt_Floor_Poor]

I received my used front and rear sections today. I’m very satisfied with the condition. They are in very good shape. They have 4156 written on them, so I guess that answers the question of where they came from. The joints fit together good and tight. I’m still waiting on some stuff from FP Smith. The turbo saga continues as well. I think I am going to put a used one from a 5488 on it. 
 

Here is the “new” manifold and the exhaust gaskets from Olson’s  

[pede]

If your fan is pushing out the exhaust gases build up some sort of material on the fins, the blacker the smoke the more buildup, I called it carbon but not sure that's right but probably more of a carbon/dirt type of material that bakes to the fins reducing effectiveness for cooling and it can't be washed off. This was especially bad on the 20C's since the cooling system was borderline at best.      

[Rawleigh99]

Ah yes!  The pusher fan!  I did not think of that!

[Dirt_Floor_Poor]

I got the NOS turbo elbow today. I’m still short a few parts to get everything back together. I have a used turbo coming. 

[Rawleigh99]

That ought to hold you for a while!

[Dirt_Floor_Poor]

Some of the studs for the exhaust manifold came out when I attempted to remove the nuts, others did not. They were all in rough shape, so I didn’t want to reuse any of them. I was able to perform a small miracle tonight and got the rest of them out without breaking any of them. I don’t know any history on this engine, so I don’t know if it’s ever been apart or not. If it has, it looks like it has been quite a while since it was worked on. I was having some difficulty locating aftermarket replacements. I don’t suppose I would have to put the studs back on, I could have just used bolts. With some light internet research it appeared they may still be available from Navistar. I called the dealer and sure enough they are still available and they can get them from Chicago. So at least some of it can still be repaired with OEM parts, lol.

 

 

[Dirt_Floor_Poor]

I spent a little bit of time on this machine today. The studs to bolt the manifold to the head were not available from Navistar as I had thought. With some help from Technical IH, I found some studs on eBay that were the correct dimensions. The studs that bolt the turbo to the manifold were available from Navistar, so I got them. I cleaned up the mating surfaces on the “new” used manifold sections and got it installed. Time to work on this has been more difficult to find than the parts to repair it. 
 

[hardtail]

Progress now for some new UC to stumble upon, those things were a beast of a loader 😊

[Dirt_Floor_Poor]

I set the turbo and exhaust elbow on the manifold just to see what I am dealing with. It is a 3LM turbo as opposed to the old Solar that would not fit the new center section. The exhaust elbow looks good, it even fits the old hole in the hood. The new turbo is going to require the air intake piping to have to be reworked. It looks like the turbo oil supply and drain can be made to work with just a little bit of work. The old air piping is all the wrong size now. I might head to a truck parts house and see if I can come up with anything that will work. 
 

 

[just Dave]

Pipe supply houses can get bell reducers in weld style and schedule 10 and 20 also to make it heat resistant, stainless steel.  If you have to make it. Looking good

[Dirt_Floor_Poor]

This TD20 is for sale somewhat locally for parts. It looks to be an E model? Are there enough similarities on the undercarriage that this would be worth entertaining? I think it would have to be cheap for me to be very interested, but maybe.

 

[pede]

It's kind of hard to tell but the undercarriage doesn't look as good as they say, besides you know how hard this will be to move, if I remember right it's like 54,000lbs.  

[hardtail]

If it is an E I think they had a different pitch than standard 20B if that's what you need? Starting to forget some of those details anymore 🥺

[Dirt_Floor_Poor]

I might go take a look at it if it’s not too far away. I need to call the guy. If it’s not too bad I’m worried I would just be tempted to try and fix it instead of using it for parts. It’s like a disease. 

[Dirt_Floor_Poor]

I had some time to work on the intake piping today. It took a couple of tries to get all the correct adapters and pipe ordered in. I didn’t want to take the hood off unless absolutely necessary, so it is hard to get good measurements. It took a couple of attempts to get the pipe the correct length, mostly because I didn’t want to cut it too short. I got the intake connected to the turbo and then ran out of time for today. 
 

The old pipe is on the left and the new one is in the right.

 

New pipe with the new hoses on. The original size is 3” and the new turbo is 2”. The old setup used 3” hoses on each end.

On the engine with the clamps tight.

[Dirt_Floor_Poor]

I got the rest of the air intake pipe done this afternoon. I also got the turbo oil drain pipe “to fit”. I think it turned out pretty good so far. 
 

They new pipe is on the left, the old is on the right. The air cleaner is 4”. The old pipe is 3 1/2” as well as the old turbo. The new pipe is 4” until it goes in to the new turbo at 3”.

 

Installed on the engine with the clamps tight.

 

A little bit of grinding on the right side and some use of a round file in the mount holes and the oil drain goes on now.