Alpha 1 shift shaft seal

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Can the shift shaft seal be accessed by removing the lower unit?

 

[tommays]

Re: Alpha 1 shift shaft seal

Yes

Tommays

 

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Re: Alpha 1 shift shaft seal

Is there any online manual that shows the steps to replace the shift seals?

 

[Don S]

Re: Alpha 1 shift shaft seal

Is it an Alpha I or an Alpha I Gen II?

 

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Re: Alpha 1 shift shaft seal

Alpha 1

 

[Trent]

Re: Alpha 1 shift shaft seal

Im assuming you know how to drop the lower unit? Drop it and unscrew the shift shaft seal bushing assy. This takes a special socket that you can make/or buy. Or you can use a punch and hammer and tap it loose gently. Replace items 46,47,48,49

http://www.dougrussell.com/partscatalog/images/CRUISER/99964/17.gif

 

[Don S]

Re: Alpha 1 shift shaft seal

Since there are shift shaft seals in both the drive and the pivot housing, and it's impossible to deterimine which one you are talking about with your minimum information.
Here is a link to the Merc service manual.

http://www.boatfix.com/merc/Servmanl/6/6covr3.pdf

Section 3D covers the drive part
Section 4A covers the pivot housing part.

 

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Re: Alpha 1 shift shaft seal

Sorry for the minimal Info. After futher investigating, it appears to be leaking from the upper seal, I can see a brass bushing where the upper shift shaft goes into the upper houseing and it appears to leaking there. I have not had a mercrusier apart before, but have done work on a OMC. I assume I will have to drop the whole unit to get to this seal. If i am wrong please give me any tips or other info I may need. Thanks for your input.

 

[Don S]

Re: Alpha 1 shift shaft seal

Yes you have to remove the drive.
If you look at that manual link I posted above, it gives you detailed information (with pictures) on how to replace the bushing and seal assembly.
See section 4B starting on page 18.

 

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Re: Alpha 1 shift shaft seal

Thanks eveyone for your post.
Don S, great links that you have posted, I think those will be great help. Thanks again.