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Farmall & IHC Tractors Discussion Forum
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fan pulley on H

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KRUSS

05-13-2006 08:18:07




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I have been busy tearing apart a non running H. The reason it became a non runner years ago, is that the prev. owner was tightening the fan belt a little too enthusiasticly and broke the adjustable part in two neat pieces. So now I have the radiator off and fan off. In order to reinstall the movable half of the pulley do I need to remove the water pump? I think so, but wouldn't if I didn't have to.

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Haas

05-13-2006 17:34:50




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 Re: fan pulley on H in reply to KRUSS, 05-13-2006 08:18:07  
You do not have to take the water pump off to replace the broken sheave. You do have to take the bearings assembly off, but you can leave the pump housing that contains the impeller on the tractor. Remove the fan drive assembly(the thing with the springs on the front), the fan and the packing nut. Then remove the clamp nut that holds the bearing assembly. Then the bearings and all will slide off, but the water pump housing will still be mounted to the engine. The rear flange of the pulley is pinned to the bearing housing assembly. It's a chore to get the pin out and that rear part of the sheave off, but even more of a chore to get it back on and aligned so you can get the pin back in. I ended up taking mine to a shop to get help in getting it back on. I got the pin out on my own. The hole for the pin is not straight, so you will need to put a piece of 1/8 inch round stock in the hole to see where to position the sheave half when you put it back on. While you have tha thing apart, check the bearings for play and you might as well put in new grease seals and get some shaft packing too and add a ring or two of packing.

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riverbend

05-13-2006 12:17:46




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 Re: fan pulley on H in reply to KRUSS, 05-13-2006 08:18:07  
Yes, you have to take the water pump off, and take it apart to replace the moveable sheeve. There is a pin that secures the stationary sheeve. The H service manual or the I&T manual covers rebuilding the water pump. The IH manual has more complete directions.

Greg



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KRUSS

05-13-2006 13:47:00




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 Re: fan pulley on H in reply to riverbend, 05-13-2006 12:17:46  
Thanks, i'll get to that. Hate to take apart a perfectly good water pump, but if i'm careful maybe I won't screw it up too badly.



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