1967 mercruiser 120... Prop shaft seal? ? ?

[snowthrower]

Hey all,

I noticed when I drug the old girl out that there was gear oil in the lower portion of the drive ( were the exhaust and cooling water exit ).

I searched the forum for such things and found that it could be a couple things... shift shaft, water pump seal, or prop shaft seal.

Now what I did was check my oil levels at the top ... dry, and at the mid point near the water pump vent hole ... dry, and at the bottom and ther ewas not much there.





I have come to the conclusion that the leak must be the prop shaft seal since my oil level had drained to a level below the other possible leaks that I know of ( UNLESS YOU HAVE ANOTHER IDEA ). Now I stoped by a shop today and was told 250 to replace the prop shaft seal, so I want to do it my self. My questions are:

I have a 1967 mercuiser 120 ... what is this refered to? A #1, alpha...?

Does any one know the part number for the spaner I need?

Once I have the spanner what risk do I run having things not come apart clean ( fresh water boat all but about 4-5 times in it's life ) ?

Any part numbers or " when I did it, I found ..." type of advise would be sweat.

Thanks in advance.

 

[MRS]

Re: 1967 mercruiser 120... Prop shaft seal? ? ?

I have a 69 120 merc. I did redo the whole lower end myself I had to we were leaving for a trip. I knew the shop could not fix in one day so I asked him if I bought all the parts from him and brought the boat to him. If he would loosen the ring and pull the hub and when I was done to re-torque it for me if that would work. He said sure of coarse I did pay him to do this for me I think 40 bucks well worth it. The tools are exspensive and you can brake the rings if you do not take off right I think 250 is a good deal. Could save some knuckle busting.....

 

[snowthrower]

Re: 1967 mercruiser 120... Prop shaft seal? ? ?

I could build the spanner for next to nothing ( very experience fabricator ). Are there any other one off tools I need for this project?

And/or answers to the other questions.

Please help, I love the old boat but I'm to stuborn to take it to a shop.

 

[snowthrower]

Re: 1967 mercruiser 120... Prop shaft seal? ? ?

?? Any thing ??


I know there is someone around here that can help me out.