John Deere 503 cutter Leaking grease

[dward110]

I have a JD 503 that is leaking grease. It a Comer version. I put corn head grease in it and noticed a small amount of it leaking out of the rear around the round plate. Is there a seal behind the plate and how do I replace it? Any suggestions would be greatly appreciated.

 

[caterpillar guy]

If no shaft is there then it is either sealed with a gasket or an o-ring depending on how old the box is will determine some of that.

 

[Tx Jim]

Welcome to this forum
It appears from viewing 503 parts catalog on JDparts.com that you need to replace an o-ring.

 

[dward110]

(quoted from post at 05:57:31 08/14/23)
Welcome to this forum
It appears from viewing 503 parts catalog on JDparts.com that you need to replace an o-ring.

Thanks! That looks like my gearbox. It looks like there's a retaining ring that hold it on in the diagram.

 

[dward110]

(reply to post at 05:29:08 08/14/23)

Thanks!