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Old 23-07-2008, 12:34   #1
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Reduction Gear oil seal replacement Yanmar 3gm30F

My Yanmar 3GM30F reduction gear is leaking a little oil where the shaft exits the casing. This oil is thrown out by the flange. I have new seals but I am curious if I have to totally remove the transmission and reduction gear or can I simply remove the flange and replace the seal that way? I would appreciate knowing which way to go before I get into the small, tight quarters with my bad back.
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Old 23-07-2008, 17:38   #2
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My Yanmar 3GM30F reduction gear is leaking a little oil where the shaft exits the casing. This oil is thrown out by the flange. I have new seals but I am curious if I have to totally remove the transmission and reduction gear or can I simply remove the flange and replace the seal that way? I would appreciate knowing which way to go before I get into the small, tight quarters with my bad back.
if you have enough room behind the trans to swing the required wrenches and sockets. It can be done in the boat. You'll need to be able to push your shaft back a good 6" or so. With a bad back, I'd recommend pulling the trans.
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Old 23-07-2008, 19:08   #3
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I got advice from the previous poster.....not a problem if you have the room

BTW IS there a Bight, ME?
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Old 23-07-2008, 19:20   #4
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BTW IS there a Bight, ME?
yes, kind of, in virtual altered reality way.
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Old 23-07-2008, 22:04   #5
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Just wondering

I am heading up to Maine in a coupla weeks....wanted to get a decal like that...to go with my KW and MRE and HON (Baltimore)

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yes, kind of, in virtual altered reality way.
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