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Haas
05-19-2004 18:32:19
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Re: Belt Pulley Oil Leak in reply to MIKE, 05-19-2004 17:40:45
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I posted an answer on this a few days ago. Here we go again. I think the pulley flange has three bolts, not four, but I could be wrong. Anyway, take the bolts out of the flange. It may take a little perswasion with a pry bar, but after the bolts are out, the flange and the shaft with two bearings and a gear on the end will slide out. Be prepared to catch the oil that will come out too, as there is no drain. The small sump of the pulley is fed from the transmission and overflows back to the transmission. Since it is an overflow system, and this is the high point of the transmission sump, any water tends to accumulate there, so you may get some water out too. Running the pulley occasionally will help keep the water out and if the tractor ever works and gets hot, the water will evaporate. If it is allowed to accumulate in the pulley housing, the bearings will eventually go bad. There is no gasket under the retainer flange, only shims to adjust the gear lash. So to avoid leaks, the shims and surfaces must be completely clean at reassembly. The shims should be put back like you found them unless you want to go through the process of readjusting the gear lash. To replace the seal, you really need a bearing press.
The gear, and both bearings must be removed to replace the seal. Seems I recall there is a spacer on the shaft as well. It's not really a bad job. I took mine to a shop that had a press to remove and reinstall the bearings and gear. I do believe, though that if you have some experience in such things, you could do it with a puller without a press. When you have it reassembled, put a quart of gear oil in through the fill port on the pulley housing to supply initial lubrication when you restart. Any excess oil put in will just go into the transmission.
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