Author Topic: Volvo Penta Gearbox MS4A  (Read 2972 times)

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Volvo Penta Gearbox MS4A
« on: 24 March, 2014, 16:47:59 »
My gearbox does not go into reverse any more since I had to go full reverse recently, crossing the panama canal. Since then it is only making nasty noise in reverse. Lukily forward is still working (although putting it in gear makes a mean sound) so I made it out of the canal without having to be towed.
Now I am looking for workshop manuals or anything that can help me take gearbox out and apart.
If someone owns a manual for the gearbox I would be happy to pay for the cost for getting it scanned in a copyshop..
Kind regards

Offline Ewout

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Re: Volvo Penta Gearbox MS4A
« Reply #1 on: 24 March, 2014, 17:00:47 »


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Re: Volvo Penta Gearbox MS4A
« Reply #2 on: 29 March, 2014, 01:40:42 »
Thanks Ewout. That plan is about all I have. Lukily it has turned out, that the transmission is ok. It was the flexible coupling connecting it to the shaft, that was torn apart. It still grips when I go forward because the prop pushes the shaft into the coupling, but in reverse it gets pulled back.
So now I am looking for a new flexible coupling instead.
Found a vetus part BULLFLEX830 but so far nobody in Vetus has been able to confirm that it matches the MS4A transmission or give me the exact flange dimensions of the coupling.
If anybody here has recently fitted a new coupling on a MS4A I would be happy to receive product details... Otherwise I might be ending up at volvo buying the real expensive stuff..