What type sterndrive

[YOBE]

Hi,

Yesterday I picked up the boat and first step was to remove the Mercruiser sterndrive. Engine is a Mercruiser 165HP.
Gimbal bearing still moving smooth. Gimbal bellow in good condition. U-joint is moving smoothly and no play issues.

BUT: quite some oil in the bellow.
I suppose that there is a very low propability that this comes from the engine. So most likely the oil seal from the upper part of the drive is leaking.

Next steps I will take:
1. Remove the top-lid of the upper part with the 4 bolts and visualy inspect the inside bearing/gear (need to order a socket...).
2. Drain the oil (I only see a oil screw in the bottom part of the drive and a vent in the upper part)

Question as next step:
3. Do a pressure test (10psi I read somewhere) OR start disassembly of the upper part?

Or any other suggestions for the next step?

Should I have created a seperate post for this question? (first steps in this forum)
Does anyone know what type of sterndrive this is? R or MR? (see picture).
It has this eye on the top to lift the drive.
(I know it needs cleaning up)

 

[Fun Times]

What year is the boat the drive came with? If you're able to match a year, one of the following links ought to be your parts catalog for it,

165 1970-1977​

165 1978-1981​

Best to do (plus set up to do before hand) a pressure test first to see if maybe something else might be leaking too then you're ready to retest after re-sealing upper drive shaft housing since that will be where the oil you found came from.

 

[Chris1956]

Check the u-joint yoke that the oil seal rides on. Often these get grooved and will ruin a new seal in a short time. The fix is to replace.

 

[tank1949]

Gear lube or engine oil? Have you carefully checked OD? If not leaking lube, it has to be engine. How much is much? Is it worth all the work for a missing quart a season???

 

[Candy Gramformongo]

Check the u-joint yoke that the oil seal rides on. Often these get grooved and will ruin a new seal in a short time. The fix is to replace.

Or Speedi-Sleeve.

 

[kenny nunez]

I have used Speedi sleeves many times on that yoke. Never a problem.
Any NAPA or or bearing supply warehouses should have one.
You can also order one directly from Speedy sleeve’s website.

 

[Candy Gramformongo]

I have used Speedi sleeves many times on that yoke. Never a problem.
Any NAPA or or bearing supply warehouses should have one.
You can also order one directly from Speedy sleeve’s website.

or Amazon. If you have time to wait a week for it to arrive. I found last June that it was half the price of the same thing at my local bearing house, which did not have it in stock and would take a couple days to get also.