4630 oil leak

MHG · Dec 2, 2020

Hello everybody; End of this hay season the 4630 started leaking oil onto top of diff under seat. There is a "breather bolt" holding the draft control spring housing to the top cover. Thought maybe there was a check valve but bolt was hollow. Rear end is not over full of oil. Any ideas whats wrong? Thanks in advance MHG

JoeM(GA) · Dec 2, 2020

should be a vent bolt in front of the RH lift cross shaft casting(item #43)might be stopped up
4630 parts page

MHG · Dec 2, 2020

(reply to post at 16:37:33 12/02/20) [ /quote] JoeM. Thanks for the reply. I pulled out the 2 "breather bolts" item #33. The leaking one was hallow. The other one was sealed at the head, didn't poke at it til I knew what I was doing. Will look at vent tomorrow. If vent was plugged would that cause leak at breather bolt? Thanks again. MHG

JoeM(GA) · Dec 2, 2020

hot/heated oils make fumes that have to go somewhere, if the vent is stopped up, it's just hunting a way out

4630 oil leak

MHG

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JoeM(GA)

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MHG

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JoeM(GA)

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