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Tractor Talk Discussion Forum

International Hough H90c

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Michael Miles

07-08-2007 08:20:50




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I just bought a 1978 hough h90c payloader that has no digging power! This is the first peice of heavy eguipment that I have ever owned. I was woundering if anyone can give me some tips on what might be wrong? Please help. Thanks!




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DMont

07-10-2007 15:31:37




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 Re: International Hough H90c in reply to Michael Miles, 07-08-2007 08:20:50  
I normally take for granted that a person has checked the obvious things therefore didn't mention checking the air cleaners. There should be an outer and inner cleaner. Remove and blow them out holding the air jet about 8 inches from the paper. YOU could rupture the paper otherwise. Make sure to check all connections from the air cleaner to the intake maniford for a good connection with tight clamps. Does the engine smoke much? Check the throttle movement at the pump to make sure it opens completely.

Does the turbo spin freely on shut down. If it doesn't take the air cleaner side loose and make sure the impeller is not rubbing the housing from wear. There is supposed to be some side movement but not touching the housing. If there is excessive smoke the turbo may need rebuilding. As I recall that turbo is a monster.

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michael miles

07-10-2007 21:41:22




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 Re: International Hough H90c in reply to DMont, 07-10-2007 15:31:37  
Hi,thanks again. Air cleaner on top is new.Not sure on the other one i will locate it tommarro.Engine doesn't smoke bad at idle. Seems to smoke alot more when gas peddle is all the way down.Thanks!!!



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DMont

07-10-2007 15:18:44




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 Re: International Hough H90c in reply to Michael Miles, 07-08-2007 08:20:50  
Measuring Turbo boost pressure is normally done with a slack tube manometer. Using a PSI guage doesn't give hardly any hand movement, but a water manometer measures fine pressures. Its a tester with two clear tubes connected at one end. You essentially have a clear tube with water inside. One of the ends connects to the inlet duct measuring the turbo outlet pressure. The other end is left vented. The amount or water displaced is measured in inches. Therefore inches of water moved is measurement. Common in heavy equipment troubleshooting. You can make one if interested. The tube is looped and you have both ends up, with the "u" at the bottom. You measure H20 Movement down on one side and H20 movement up on the other side. The tube is about 5 ft long which you would need 10 ft of clear hose. There is also a mercury manometer that does the same thing with less liquid movement. May sound complicated, but it really isn't.

So you think the trans is okay, just the engine not developing full power?

You measure

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michael miles

07-10-2007 21:32:19




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 Re: International Hough H90c in reply to DMont, 07-10-2007 15:18:44  
Hi,thanks once again.I really mean it. I do not think tranny is in good condition because 2nd gear forward does not want to move unless i roll down an incline first with it.But will work in reverse.Engine turbo doesn't seem to be working all the time.I have received a service manual in the mail today it says you are to prime turbo after sitting without use for a week or more? How do you connect the 2 tubs,can u use 1 tube?how do u convert inches of h20 movement to psi?Where and how do u connect to inlet duct?Any tricks to priming turbo?? Thanks a million and God Bless you.

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DMont

07-09-2007 17:26:38




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 Re: International Hough H90c in reply to Michael Miles, 07-08-2007 08:20:50  
Does the engine seem to reach max rpm? That is a DVT573 incidentially. I suppose you have changed the fuel filters. You should get a full line of fuel from the supply. The boost pressure ( turbo pressure ) at full engine rpm and transmission stalled should be somewhere around 19 inches of water. That is not the exact but a bench mark. If you stall the hydraulics ( hold a hydraulic lever in engaged position ) as the transmission is stalled the engine should maintain rpm with some black smoke. You don't hold those two engaged for just about 5 sec. Transmission ( stall ) is in gear with the brake on with full rpm. Check all fluild levels...oil and water before checking this method.

That tractor was very good and a work horse when performing as designed.

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michael miles

07-09-2007 19:49:54




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 Re: International Hough H90c in reply to DMont, 07-09-2007 17:26:38  
Hi,thanks again for responding!Answer to your first question is NO. #2 Yes I changed the fuel filters.Please explain what 19 inches off water means? Currently the brakes are not working. I tried to bleed them but no air pressure is holding.



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DMont

07-08-2007 15:51:49




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 Re: International Hough H90c in reply to Michael Miles, 07-08-2007 08:20:50  
Does the Payloader have the ability to spin the wheels in the bank in low gear or are you having hydraulic problems. Lack of movement power can be lack of fluid to the torque converter charge pump, in which case I would check the suction filter. Take the filter apart when you remove it and check for metal. I think that machine may have a transmission pressure filter which may need changing. I am taking for granted you have checked the fluid level in the transmission. Once the filters have been addressed I would check the torque converter charge pressure. A company called EIS in Dallas can get manuals which I strongly recommend. Really need more info to talk.

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Michael Miles

07-09-2007 05:45:50




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 Re: International Hough H90c in reply to DMont, 07-08-2007 15:51:49  
Hi,thanks for responding so quickly! The loader does not spin the tires at all. I spent all day Saterday changing the fluid and cleaning the element filter,witch did have allot of metal fragments in it.There was one other filter witch looked like a return line transmission line filter I changed with it.I replaced all the trany fluid with dextron3 transmission fluid,I hope that is the right fluid? One other thing I did Sunday was take loose all the full line ends and fuel did not come out of three lines. Could that be the problem?Manuals on the way!

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