Volvo Penta 5.0 GXI-E - Won't roll over

[jlsmith1000]

Most likely the top cap seal. The large round rubber piece with the little side seal located at about 2 o'clock in the photo

That's what I thought too, but that's a new seal, just bought that thinking the same.

 

[alldodge]

How much pressure you using? Should be no more then 5 to 7 psi

 

[jlsmith1000]

I'm using a hand pump/pressure tester and it doesn't register any pressure when pumping.

 

[alldodge]

Puzzling @kenny nunez have any ideas?
Guessing it would be difficult but any way to see if the cap and housing are flat

 

[kenny nunez]

Checking the edges with a flat edge may show if there is distortion. I cannot remember ever having a leak in that area. I used to put 15 lbs of pressure to check them.
Maybe MUC has seen leaks in that area.

 

[alldodge]

Same here never even heard until now of someone having a leak there

 

[jlsmith1000]

I'll take a video of the bubbles and post it.

 

[alldodge]

I'll take a video of the bubbles and post it.

No need, we believe you, just have never heard it happening until now.

Something has to be warped or chipped

 

[Thalasso]

smelled something that reminded me of burning rubber?

Sign of a bad coupler. Maybe maybe not

 

[Fun Times]

Seems it's time to pull off the stern drive and see if there's any oil/water by the bellows and re-check the pressure test with the drive off to help know for sure.

Upper Gearhousing

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[jlsmith1000]

I've attached two videos. The lower unit bubbles is with the top cover on, you can see the bubbles at the back of it. With the cover off, you can see a mist (lube I believe) coming up through the bearing area. I would think that air would be able to move north/up through that bearing from the oil drain (where the pump is) but don't know that for sure.

 

[alldodge]

Can see the second vid, but first just hangs
I'm on 6MB DSL maybe that's it

Either way I don't know

 

[dubs283]

Agree with fun times. Need to pull the drive and perform a pressure test again

I didn't notice in the initial look at the posted pic the drive is still attached to the bell housing

Thinking the leak could be the yoke shaft seal or the u joint bearing snout o ring given the location of the bubbles with the drive still mounted to the bell housing

 

[jlsmith1000]

I have the service manual for the engine, lower unit, etc. @dubs283 but I'm not muc of a "boat" mechanic, give me a 1940 farm tractor any day, nice and easy, lol.

Can anybody recommend a good video for removing the drive, and I assume the pressure test is the same once removed, it just exposes more areas to see leaks?

 

[alldodge]

Didn't watch clear thru but should get the job done

 

[jlsmith1000]

ok, great video, thanks @alldodge. Seems like of the 6 nuts holding the unit on, one of them is pretty round. Can't get on it with anything that will get it to turn. Other 5 were no issue. Any suggestions? Is there a particular type of rachet or tool that is made for this angle? Once I get this off, I'll need to replace the nut.

 

[alldodge]

Might try vise grips if there is room.
Some of these tips might help

Do note the nut is stainless and self locking, so nothing special


https://knowhow.napaonline.com/11-tricks-for-removing-rounded-off-bolts/

 

[jlsmith1000]

Also, any idea what the thread on the oil dipstick at the top is? I like how this guy in the video fab'd up a lift hook.

 

[alldodge]

Also, any idea what the thread on the oil dipstick at the top is? I like how this guy in the video fab'd up a lift hook.

I don't but @Scott Danforth might

Guess you have a engine hoist or other to be able to use it?

 

[alldodge]

Could take the dipstick to local hardware store and find what nut fits it if all else fails. My guess it's metric