Mercruiser Alpha one drive

[laxplayer111]

When launching my boat I notice water trickling from the lower unit through the shaft. What are the potential causes for the leak?

 

[Thad]

Re: Mercruiser Alpha one drive

Are you talking about the transom where the drive comes in?

It could most likely be a hole in the drive shaft boot. If this is the case, it will only get worse. Left unfixed, the hole can become large enough to let enough water in to sink your boat in a short period of time.

If it is not this, then probably the seal on the drive collar that is mounted to the transom. Hope for the boot, it's cheaper and easier to fix.

 

[Rocky_Road]

Re: Mercruiser Alpha one drive

When launching my boat I notice water trickling from the lower unit through the shaft. What are the potential causes for the leak?

Welcome aboard!

Please be more specific...was this coming from the back of the prop?

Or somewhere else....

 

[laxplayer111]

Re: Mercruiser Alpha one drive

The leak was coming from the transom drive assemble through the gimble bearing.

 

[Rocky_Road]

Re: Mercruiser Alpha one drive

The leak was coming from the transom drive assemble through the gimble bearing.

Then your bellows has a hole and/or has cracked...lift the drive, and take a good look at it. Mercruiser recommends replacement every 5 years, unless a leak has developed.

You need to keep any water away from your u-joints and gimbal bearing...!