Re: [Amel] Maramu out haul gear box

Mark Hayden


Thanks for the comment. Your pictures/diagrams were very helpful in removing the shaft. I posted a picture of the bracket I used in your SM Outhaul Service photo group as another approach to getting the shaft out that avoids bringing out the ol' sledge hammer. Hopefully it will be helpful.

After spending severals days getting that apart, I will be following your lead with servicing it every year.

Did you ever find a good US source for the Leroy-Somers gearboxes?

thanks, Mark

--- In, kimberlite <kimberlite@...> wrote:


I had the same problem last year. I finally resorted to removing the boom
turning it upside down. I then supported it on wood blocks.

I installed a black grade cap screw in the hole in the shaft until it was
flush. I then did go medieval on it with a large sledge hammer. It did come
out after about 15 swings. I now use an antiseize compound from McMaster
Carr every 6 months.

As a ps the shaft comes out easier if you remove the screw from the arm that
goes into the Antal winch drum.

Fair Winds


Amel Super Maramu #376 Kimberlite


[] On Behalf Of Mark
Sent: Wednesday, June 08, 2011 6:27 AM
Subject: Re: [Amel] Maramu out haul gear box

It seems like quite a few people are tackling the problems servicing their
outhaul gearboxes. I happened to notice the other day that the top lip seal
was shot on mine and started on a two day project to disassemble the

I tried just about everything to get the inner shaft removed, except
"getting medieval with a sledge hammer" as one of the other owners
demonstrated. After bending several 8mm steel brackets and breaking my
puller tool, we finally succeeded with a 20mm thick steal bracket that was
fabricated for the purpose. The nice thing about the approach that finally
succeeded for us was that all the force was placed on the outer shaft of the
gearbox, none on the boom or the other components of the gearbox. I'll post
a picture when I have a chance.

I found the model information posted by one of the other owners here:

Manufacturer: LS Leroy Somer
Made in France
6015 Angoulene
Reducteur N 0256889
Type MVA M33C
Rduction 1/60

I have not been able to reach Leroy Somer via their contact page. Can anyone
recommend a reliable and inexpensive source to order the gearbox or parts
from? Any pricing info?

One other question: it seems that the outhaul gearbox causes more problems
than the main sail furling gearbox. Is that right? Is the latter just less
exposed to the elements?

thanks, Mark


[Non-text portions of this message have been removed]

Join to automatically receive all group messages.