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Farmall & IHC Tractors Discussion Forum
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IH 674 hydraulic pump

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Mark in PA

12-09-2004 10:33:42




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My tractor has a 2250 loader and has 3400 hours on it. I"ve had it for a year now and have changed the hyd. filter twice and the hy-tran once. Each time I put on a new filter, I have to remove the flow divider valve from the bottom of the mcv and start the tractor until fluid runs out here. If I don"t, I never get any hyd pressure. The pump also makes a lot of noise at times, and has recently gotten worse. It seems like when the front end is pointed downhill, the pump will lose it"s suction. If I"m quick enough to get it back on the level, the pump noise will stop and the hyd wil be ok.The hy-tran is up to the full mark on the dipstick. I guess my question is do I have a weak pump thats fixin to die soon, or is there something else I can check before removing the pump, hopefully something cheaper!

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Mark in PA

12-10-2004 04:45:18




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 Re: IH 674 hydraulic pump in reply to Mark in PA, 12-09-2004 10:33:42  
Thanks for the info. I will check into this. Do you guys know where the plug is at?



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JB2

12-09-2004 18:34:39




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 Re: IH 674 hydraulic pump in reply to Mark in PA, 12-09-2004 10:33:42  
Hi, you can also over fill the tranny by a couple gallons of hytran and this will help the problem of the missing plug.

If you search the archives for 454,484,584,574,674,684 you should find an articule from a British IH serviceman concerning plug in tranny.

Good Luck
JB2



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RAS

12-09-2004 15:49:57




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 Re: IH 674 hydraulic pump in reply to Mark in PA, 12-09-2004 10:33:42  
There is a rubber plug in the rear housing that is missing from you tractor I will bet you. This plug would fall out all the time and the only reason it is in there is to hold oil in the rear housing at the pto clutch pkg so the suction screen will all ways stay in oil when the tractor is going down hill. The part number is 527748R2. Hard to explane where it goes if you can find a parts book it will help you.

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