Merc 39 oil seal

[KENNETH BROWN]

Can someone help me find the tool needed to remove the nut holding the oil seal in place on a mercury 39. I could also use some advise getting the seal out.

• This topic was modified 4 years, 2 months ago by KENNETH BROWN.

[A Hoskins]

I think a little more explanation is in order. I am wracking my brain to imagine a seal held in place by a nut. I’m not even gonna venture a guess. Help me out here.

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[dave-bernard]

I think he is talking about the carrier nut behind the prop.

[KENNETH BROWN]

It is 2 I/4 inch round nut with four slots to put a tool in loosen or tighten. This nut holds the bearing carrier assembly in place.

[A Hoskins]

Ah Ha, that “nut”. I made the tool to do the job. I cut a 2-1/4″ (approximate) diameter disk out of 1/8″ flat stock and ground away the circumference to make the four “teeth”. Then I drilled a hole in the center and attached a 12″ long handle to it, also 1/8″ flat stock. With the tool in place, put a sleeve over the prop shaft and the prop nut on the end to keep the tool from rising. Be aware that the “nut” is left hand thread. If I remember right, Merc 39,40, 60, 75 and 110 all used basically the same lower unit.

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[KENNETH BROWN]

Thanks Would you be interested in selling the tool or letting me use it. I live in La Grange IL

• This reply was modified 4 years, 2 months ago by KENNETH BROWN.

[A Hoskins]

Sorry, neither option has any appeal. Perhaps you could search out an A.O.M.C. member/Mercury person closer to home. Even a professional mechanic might be willing to do this simple task for a minimal fee, like a six-pack.

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