Hydraulic motor keeps pushing seal out.

[4570Man]

I got my seal kit and you can’t change it without pulling the inner bearing on the shaft. They claim not to reuse the bearing after pulling it. The Grasshopper part is $60 and I’m sure has another highway robbery shipping charge on top of that. I might be able to get a bearing locally. And the outside bearing which was supposed to be lubricated with grease was clean and full of hydraulic oil so it’s definitely got a seal failure. You’d be better off tossing this thing in the trash pretty quick. A Grasshopper drive motor is $750. You can get a Parker one not through Grasshopper for $500-600. The seal kit is $65. The bearing is $60 and the other bearing is $20. There’s all kids of needle bearing pads that I haven’t priced in here. The rotor assembly is $300 but mine is tight so I don’t need that. My shaft doesn’t have any scoring so I don’t need that but I’m sure it’s $300. Then the hydraulic shop wanted $200 to install the seal kit.

 

[4570Man]

I got this put back together. The seal kit was more complex than I expected so there was really no substitute for ordering the right one so thanks for the advice on that.

 

[RickB]

Here’s hoping for a drip free result!

 

[4570Man]

Here’s hoping for a drip free result!

Me too. It definitely needed the seal change. The high pressure seal in the end was bad. The outside bearing was supposed to be dry of hydraulic oil and grease packed. It was washed free of grease and full of oil. There was 2 other o-rings broken in the body. Lucky there was no wear to the wear plates, rotary part or the shaft so this 2200 hour motor is good to go farther. The Kubota diesel hasn’t blacked oil since I changed it when I bought the mower so it’s apparently pretty tight. I’m kinda curious to see how far this mower will really go.