Engine drive coupler not centered. Alignment tool wobbles when I turn over motor
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Engine drive coupler not centered. Alignment tool wobbles when I turn over motor

  1. #1
    Thrasher187 Steve Slostad's Avatar
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    Sep 2012
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    Default Engine drive coupler not centered. Alignment tool wobbles when I turn over motor

    I am working on my 28 Daytona. I greased the drive coupler hoping it would quite a noise back there first time out this year. I had replaced the gimbal last year so I figured it was ok. After the noise persisted I pulled the drive and found the gimbal bellows had some water in it and the gimbal bearing was in fact toast Then when I went to align the gimbal bearing , I could not get the tool to go in without sticking. After messing with it for a while and adjusting the motor height my alignment tool was favoring the port side. I had my girl turn the motor over while I had another bar that fit snugly into the splines installed. Sure enough it wobbled big time. It was then favoring the starboard side . Its as if the splines in the coupler are no longer centered. With the bar in the splines Its swinging Maybe a 3/8 "circle at the back of the drive . Seems Excessive to me. Did I over grease it and ruin it? Or does the grease just go straight to the splines? or Should I pull one of the zerks out and let the grease out? Maybe I over greased it ? Can I get a long bar and nudge it back straight? I had to raise the motor 1/4 when I did the gimbal last year, then the drive slid right on. This year I had to lower it 1/4". Any Ideas. Bravo XR and a blown 540 motor
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  3. #2
    Thrasher187 Steve Slostad's Avatar
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    So here is what I did, I took the small rod that fit the coupler splines and found the most out of round spot by finding the high spot in the circle by swinging it around . Then I turned the motor over to where it was aligned with the high spot on top or 12 o'clock. then I adjusted the motor alignment to the spot where the alignment tool now slid right in with no effort. This by the way was about exactly where the motor was sitting when I bought the boat before I adjusted last year. This time I put in a sealed Gimbal bearing so I should not have to deal with it again. Just a word for those of you that are having a hard time aligning your drive, and it will go on all except that last inch.... You have something wrong and even if you have given up hope of it ever going back on, it will. It will basically fall on when it is right. You will have almost no effort needed to slide it that last inch. I would be happy to help if you want to call me (509)430-7733. It will go back on and when its right you will know it.
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  4. #3
    Member mprokop87's Avatar
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    Jan 2016
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    I had a similar issue with the alignment tool wobbling on me. Last year my coupler went and ground out all the teeth. I replaced it with a Sierra part that was supposed to be a direct replacement for the Alpha part. On first start I noticed the wobble, tried to align, and then nothing. I had to pull everything again. Turns out the darn coupler came bent from the factory. I managed to find a Mercruiser replacement locally, put that it, aligned the motor and the drive slid right on without any wobble.
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