Cornseedin
New User
I have a 630 John Deere that we have replaced the main crankcase seal behind the clutch twice now. Both times after replacing it has only lasted 3-5 hours and then it starts slinging oil out again. The first time we used a cheap Napa replacement, and the 2nd time we used a John Deere original seal and had it in the oven with heat on it before putting it in. I am wondering if anybody else has had any experience with this problem before. Why is it pushing the seal out? What can we do to fix this? I was told that maybe the crankcase breather tube was plugged so I took that off between the air cleaner and the governor and blew through it and it was not plugged. Any ideas or suggestions?
