Merc 18 5995557 Lower Unit Rebuild

JDusza

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Apr 21, 2009
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997
I am bringing back an 18 hp Merc, 5995557. It's had a hard life but still runs like a beast. I've been through the power head and am now doing the lower unit. The unit needs new seals, (2) upper and (1) lower. The old upper seals gave me a much harder time than expected. I got them out by destroying them and in the process, lost the needles from the bearing below, into the transmission. I didn't realize the bearing was made that way. I will be taking the unit apart now, to clear the bearing needles. **sigh** Now I have a couple issues.

1 Can anyone recommend a good tool to pull seals and now a bearing? I'm afraid of breaking the casting. Is there a narrow-ended slide hammer out there?

2 How do I remove the propeller shaft bearing carrier assembly from the housing? I see embossing indicating turn it counterclockwise for on (tighten it ?) and clockwise for off (remove it ?).

Thank you,
J
 

JDusza

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Joined
Apr 21, 2009
Messages
997
Re: Merc 18 5995557 Lower Unit Rebuild

1 Got a small slide hammer in there and all I've done is crack off the edges of the races. Can I heat the aluminum housing to loosen the stainless race?
2 Got the bearing needles out with a magnet. I think the transmission is clear of needles.
J
 

JDusza

Ensign
Joined
Apr 21, 2009
Messages
997
Re: Merc 18 5995557 Lower Unit Rebuild

Ended up grinding the bearing out.
Parts list calls for a bearing sleeve, but I didn't get one of those out.
Is anyone familiar with the bearing sleeve, 23-85092?
Thanks,
J
 
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