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post #1 of 6 Old 05-19-2018 Thread Starter
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Clunky transmission

I have a 90 HP Perkins on a 1997 Beneteau 50. When she goes into reverse it is rather clunky. Thoughts on what this could be?
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post #2 of 6 Old 05-19-2018
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Re: Clunky transmission

Do you have a MaxProp?

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post #3 of 6 Old 05-19-2018 Thread Starter
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Re: Clunky transmission

No. Standard 4 blade


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post #4 of 6 Old 05-19-2018
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Re: Clunky transmission

Easy to check visually back and forth of coupling (thrust bearing wear) Engine mounts good? Longshot is prop key got sloppy and is about to unwind . Next is internal tiredness of tranny. What make?
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post #5 of 6 Old 05-19-2018
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Re: Clunky transmission

Normal on some gears. They have a spring that needs to be overcome, prior to shifting. Once it is, the gear pack slaps into place. Grinding is bad, not necessarily a clunk.


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post #6 of 6 Old 05-19-2018
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Re: Clunky transmission

we have a mechanical tranny that we just replaced for yet more blown seals. It's always klunged in both directions, old one and this brand new one. Mechanic told me that's just the way mechanical transmissions are. told me to "man up" and just accept it. not going to hurt anything.

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