Alpha one gen II growling noise when turning

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tank1949

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No. Hinge pins are good and the top and bottom final ring pins are good. This play is where the trim cylinder pivot shaft goes through the transom
Picture?????? I only can think of hinge and gimbal ring pins? U mean transom assembly?????
 

TripleEh

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Picture?????? I only can think of hinge and gimbal ring pins? U mean transom assembly?????
Oh sorry I guess the trim cylinders attach to the gimbal ring not the transom. There are bushings between the trim cylinders and the pivot shaft but nothing where the shaft goes through the gimbal ring.
 

tank1949

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Oh sorry I guess the trim cylinders attach to the gimbal ring not the transom. There are bushings between the trim cylinders and the pivot shaft but nothing where the shaft goes through the gimbal ring.
Hum... a picture with an arrow might precisely point out where you believe you slop is located. If aluminum is badly worn on Transom assemble u might be able to insert some machined bushing.
 

tank1949

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If they are worn out, you may be able to reduce vibration with a homemade sleeve inserted? Cutting a SS hose clamp band to fit might work. Otherwise, I suspect a major job replacing or repairing. I have never seen one requiring replacement. l Usually #2 and #14 wear out. I don't see how wear in this area would cause growling. However, I am not an expert on all MC. U might invest in a stethoscope and listen carefully for where noise is precisely produced. Ain't MCs fun.....
 

TripleEh

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There is only the SS rod to gimbal ring which is usually tight and the bushings that go into the cylinders. Take cylinders off and see where the slop is

I had to clean out my cylinder bores with a wire brush on a drill to get new bushings in
The play is between the SS rod and the gimbal ring. Not sure it would cause a growl only when turning. Just noticed it and wondered if it is normal or not.
 

Scott06

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The play is between the SS rod and the gimbal ring. Not sure it would cause a growl only when turning. Just noticed it and wondered if it is normal or not.
Should be no play between rod and gimbal ring are holes in ring elongated ? Would need to replace ring, drill out and put bushing in, or weld up gimbal ring and redrill holes
 

TripleEh

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Just to close this thread out for now I’m booking the boat in to get a new coupler. I’m tired of chasing things in my driveway if you know what I mean. I will start a new thread in the spring and perhaps reference this one when I found out the result. Thanks everyone for your help.
 

Drcoffee

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Did you ever figure this out? When you said you switched props, did you go from 3 blades to 4 or just put on a new prop of the same kind? I dont know the answer but wondering if you are hearing cavitation at the prop when turning. It can be a violent event on the prop.
 
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