Leaking on the port drive

Not good. There is an O ring to seal the oil transfer valve thing-a-ma-bob, but thaat is on the other side of the helmet. Pull the drive off and see what happened. But also look closely at the bellows. I'm wondering if the bellows are leaking and causing problems.

I'll get into it tomorrow, cracked the block on starboard engine and am pulling it today. The leaking one is port side, fresh rebuilt engine and new gasket/o-ring set for the drive, topped off with fluid and broke it in yesterday, found that leaking today. I installed all new tailshaft and bearing for the port transmission.

Dropped the drive this afternoon and found I had pinched the big oring that seats around the drive shaft, checked my fluid level and found it was wayyyy overfilled and milky white. Had my mechanic top all the fluids off and he either used the wrong fluid or wasn't paying attention, either way it will need to be addressed, question is now, can an overfilled reservoir lead to leaking through the bellow into the drive, the fluid seems to be slowly flowing from tailshaft to drive and without pulling motor again (trying to avoid this step) I've got no real way to see where it's coming from. Any ideas

that looks like trans fluid, if it is

you said a cracked block, i think a bad winterize job, (late in the season to find that unless your just getting the boat out)

don't know where you live but if it does freeze then i would bypass the oil lines on the trans cooler and run engine on hose, if water comes out of cooler where oil lines connect thats your milkshake maker

since fluid isn't leaking from all over the bottom of the transom assy, i'd say the bellows are good.

by your description ( tail stock bearing port side ) leads me that way, so if a mistake was made that caused a leak and that leak let you know you had a bad trans cooler at least you found it before the trans burned

Ok, I'll look at that, the cracked block is on starboard side, this is port drive, hopefully they're both not busted

Which fluid level did you check that was high, Drive or transmission?? No oil lines connect to the cooler. Cooler is inside the trans on starboard side and 2, 3/8" water lines connect to it. If the cooler is split from freezing, common from not winterizing, your trans will fill with water when engine is running. Usually a milkshake will come up out of the dipstick tube. However, when you installed the new tailstock did you put the washer on the trans output shaft from the outside of the tailstock?? Has to be there for the spring on the drive yoke shaft, otherwise the spring will tear the seal up in the tailstock. So you may have two problems there. Split cooler and torn up rear trans seal.

Over filled reservoir wouldn't flow from the bellows to the drive. Drive level would be high. Does drive look like it was leaking any from the seal on the drive input shaft behind the u-joints? That's the only place drive would leak in that area unless........

There is a coupler between the drive and bellhousing which connect the drive and reservoir when drive is installed. It has a seal is in the bellhousing side. Did you damage it when installing the drive, easy to do? It would be right inside where the fluid is leaking out in the picture. Still though there is water in that fluid. Need to open the drain and see what comes out of that drive as well as check trans fluid. Need to determine if it's trans fluid or drive lube.

The transmission fluid level was milky white and way overfull, the drive oil was fine and not milky at all. I did install that flat washer over the splined shaft before I slipped the driveshaft on, also is there an oring that is supposed to go around the drive lube nipple on the left side of the drive? I didn't see one in there. When I looked through the bellow into the transmission tailshaft, all I could see was the milky red fluid coming out from what appeared to be around the splined shaft, dark and tight fit didn't make it easy so I'm not 100%

[ATTACH=CONFIG]557364[/ATTACH]

Most likely your cooler is split. Filled the tranny with water when you were breaking in the engine. Need to drain the tranny right away. Just remove the cooler and it will drain. Four small bolts with 7/16" heads. Try not to damage the gasket. Pretty easy to make a new one if needed. You can not buy one. As for the leak, damaging the large o-ring would allow it to leak out of the bellows and into the area where you saw the leak coming from. Should glue those big o-rings on the drive. Permatex high tack spray works well on one side of the o-ring. Only place it could be leaking from is the rear seal. When you installed the new/different output housing did you put a new seal in it? Also with the output housing off did you check the surface on the output shaft where the seal rides?? Sometimes you need to polish those up with Emory cloth if it's showing wear grooves.

My advise at this point would be pull the cooler. Best way to drain those trannys anyway. More than likely it's split. Radiator shops can solder them up. Put it back together and run it with the drive off. Check if it is leaking while running. Shift the trans into forward and reverse for a couple minutes or more each. It would be good to spin it for a while with no load on it, both directions. Sounds like this must have been sitting for a while.