175B Crawler loader

mjsoliver

Member
I"m looking at a 175B, ser# 8049 I think (i didn"t write it down!). It looks to be in good shape overall, with no serious hydraulic leaks and no suspicious welds or repairs. The undercarriage is probably 70%. I haven"t been able to hear it run yet, but the owner says it runs good and strong and it steers good both ways. My big concern is with the turbo on the engine. It is covered with oil, as is the surrounding area of the engine. How big a job is it to reseal/rebuild the turbo and how expensive? Is it specialized, like rebuilding a Diesel pump, or can any old shadetree mechanic handle it? What might be a fair price for the crawler? Are there any weaknesses that I should be looking for on the machine in general? Many thanks!!
 
A rebuilt turbo isn't real expensive. Don't try it at home unless you have a clean shop, similar to injection pump rebuilding, it's a specialized field.
 
Well the old b model machine uses a ih dt407 engine wheee the latter C model runs the ih dt 466. Parts are coming harder to come by for the 407. Rebuilt turbo will be the way to go. Overall the crawler loader market is off. Hydraulic excvators have just about stopped the sales of the old crawler loaders. Plenty of used parts out there but need to be bought cheap.
 
There is nothing on a turbo to leak externally except for the lube oil inlet and outlet. The only other places it could leak is around the shaft where it enters the hot/exhaust and cold/intake housings. In the case of the cold housing, the oil would typically be sucked into the air stream and would go through the combustion chamber and be burned. In this case the exhaust may or may not show smoke depending on the amount of oil leaking. On the hot side the oil is forced out into the exhaust air stream and would combine with the hot air to either partially burn and create a lot of smoke, or, if the leak were bad enough, stay liquid and show up at the end of the pipe as liquid oil.

I had one done for the same machine about 7 years back and, with that said, a rebuilt turbo for one is probably going to run between $500 and $1000 (best I can remember), depending on what all it takes to rebuild it.

Beyond that, typically oil on the top end is coming from leaking valve cover gaskets, with the oil getting blown all over the place by the fan. It's not unusual for it to hit the turbo and, combined with the dirt that's also getting blown around, form a hard crust on the turbo due to being 'cooked on'.
 

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