1998 Mercruser Alpha One question

J BLANK

Seaman Apprentice
Joined
Jun 19, 2006
Messages
40
1998 Mercruser Alpha One question

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I own a 1998 Mercruser Alpha One Drive. It seems the drive has a vibration only on tight turn either way. I have taken the drive off the boat and the problem is not universals or gimble bearing. Also it had the vibration since I owned the boat. ( 4 years ) I did notice that the univeral ear tips did appear to have touched during service. I touched the areas with a grinder but the problem continues to persist. I may add there is no vibration at idle
in or out of gear, only as power is applied in gear. Also I have put a brand new prop on the unit to test with no change in results. The boat has approximately 80 hours of service. Thanks in advance !
 

ziggy

Admiral
Joined
Jun 30, 2004
Messages
7,473
Re: 1998 Mercruser Alpha One question

from what i read. ujoints don't always give away their secret that they are spent just feeling them on the bench. yer hint is the vibration occures when in a tight turn.

is yer propshaft straight?
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 1998 Mercruser Alpha One question

Brand new ujoints will vibrate when turned hard over. It's normal.
 

ziggy

Admiral
Joined
Jun 30, 2004
Messages
7,473
Re: 1998 Mercruser Alpha One question

after thinkin about it, my propshaft idea is a bad idea too.....
 
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