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Scag wheel motor

K

Kennygwyn

New User
I have a scag turf tiger with nearly 1000 hrs on it and am suddenly having a hard time keeping the oil seal in on the left side wheel motor . It started with a small leak. Then it pushed the seal off the shaft which dumps all the oil. I just put in a new seal this morning and didn't even mow 30 min and started seeing an oil trail . I headed Back to shop and took wheel and hub off to see what was going on and there was my seal loose on the shaft ( it was a very tight fit and a bear to get on ). But I noticed the shaft was very hot so , I am assuming something is going on inside the motor. Maybe a bearing or something which is heating up the rubber on my seal and making it come off , any ideas or experience with this ?
 
No experience. I agree that something is going on inside. But I'm thinking it would be more like an internal high pressure leak, than heat, being the issue. I have no idea how it's sealed internally, but a common seal is no match for the pressures developed by a hydrostatic drive.
 
Are there 3 lines to the motor?

The smallest of the three would be a case drain that sends all the
oil that leaks past the internals back to the tank.

Possibly kinked or smashed somewhere causing pressure against the
shaft seal? Plugged, maybe, but hard to believe there would be that
kind of debris inside there. Possibly some sort of large internal
leak thats too much for the drain to handle?

Just my 2 cents worth....
 
If it pushed the seal out, you have excessive internal leaks inside the motor. You need a new motor. You can spend several hundred dollars on that one and still have one that pushes seals.

Check the tank with a magnet for metal. If you find metal there, you have metal in your pump too.

I am unfamiliar with the service interval on a skag, but Bobcat is 200 hr. with MOBIL1, Toro is 300 hr. to 500 hr, depending on the model and with their oil, Grasshopper is 1,000 hrs. with their oil.

Also, check any elbows and tees in the return side for metal. Metal tends to lodge at the 90 degree turns.
Clean oil is the life of those units.
 
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