Replacing prop shaft - require removing lower unit?

[jbutler67]

1988 OMC 5.0L - I/O

To replace the prop shaft... does it require removing the lower unit?

 

[jbutler67]

No Title

The Seloc repair manual isn't specific about how to just remove the prop shaft.

 

[muc]

Yes. The shift shaft and the drive shaft must be removed before the prop shaft will come out.

 

[jbutler67]

Thanks Muc.

To remove the lower unit, is it necessary to remove the entire outdrive in order to separate the upper and lower unit?

 

[muc]

Yes, if you don't there is a very good chance you will damage the shift linkage. I have no idea how good the seloc manual is. I would recommend following the factory manual. There are some special tools listed that are very nice to have. Those 2 snap rings can be a little difficult without a VERY good pliers.

Also be careful when pulling the shift carrier/forward gear carrier ----can't remember it's exact name ---- they like to stick in the case and can get damaged if you force it.

 

[jerryjerry05]

The cases need to be split OFF the back of the boat.
​The shift shaft needs to be turned so the shaft can clear the upper case.

The pinion gear needs a special socket 311875 (e-bay)(if possible) to help remove it.

 

[jbutler67]

Thanks jerryjerry05.

I found this video. It notes that exact thing - "shift shaft needs to be turned so it can clear the upper unit".

https://youtu.be/yaAj_RrRKGk