Whine from lower unit

[llerrad]

Merc 188 V8 engine with pre Alpha lower unit. When do you know the gimble brg needs to be replaced? Lower unit has developed a high pitch whine at full speed. Shifting and throttle all smooth, gear case oil no water. Do we need to worry what tell you a gimble is bad.

 

[johnkc]

Re: Whine from lower unit

gimbal bearings usually make a growling noise at idle ,in or out of gear . pull the drive and inspect the g-bearing and u-joints. not a tuff job and you may enjoy the learning experience.

 

[arks]

Re: Whine from lower unit

From my (dreadful) experience, a whine at high speed means a gear or bearing problem, and not from the gimble. My drive had a similar sound just before it blew itself apart last summer. Upper and lower gearsets were ruined, and it cost more than a new drive to fix. So I had to buy a new drive . Not to mention the tow back to the marina .Last year was an expensive year!

 

[kdmiller8251]

Re: Whine from lower unit

Arks Amen to that..... Went through same situation last year.. Pull the drive before you make a bad situation worse and have it checked or check it yourself<br /><br />Tallman