Re: Mizzen furler gearbox, A54 peculiarity?

Mohammad Shirloo

Hi Randall;


Although our “temporary” fix of spraying CorrosionX in the furler has lasted over 4 years and the furler is still very smooth, it has been on our list to service the unit, once we figure out how to get into it. I have a few questions that I would appreciate your response on:


  1. Were you able to simply untwist the bottom cap of the furler assembly with the tool you sketched?
  2. All that was required was to clean everything inside?
  3. Were you able to reuse the bearing?
  4. Any other parts or lubrications needed?


Thanks for providing this very useful information and sharing your experience.


Happy Sailing;



Mohammad and Aty

B&B Kokomo

AMEL 54 #099


From: <> On Behalf Of Randall via
Sent: Thursday, May 14, 2020 12:41 PM
Subject: Re: [AmelYachtOwners] Mizzen furler gearbox, A54 peculiarity?



I removed disassembled and cleaned my mizzen outhaul last fall. You don't need to drop sail. The issue will be in the Delrin bushings that become very stiff. I have attached 2 pictures of my work. The bearings are not to be lubed/greased. I used a cheap homemade tool to unscrew the bottom. 2cm square bar 2 drill holes straight through, put the drill bits in so the solid end goes into the bottom of the furler, with furler in a vice. Worked great. 

I finished and put on a video from a fellow Amel owner who did the same job.

They do the job at 8.02 of the video. If you need more info let me know. Use the bar not the saw.




A54 #56





On Wed, May 13, 2020 at 6:50 PM Sv Garulfo <svgarulfo@...> wrote:

Hi all,


In the great document by Gary Silver about the overhaul of the SM Mizzen furler gearbox (thanks Arno for sending us a low bandwidth friendly version), it is mentioned that the bottom part of the gearbox housing is drilled with 2 holes that are used to both unscrew that part (with great efforts) and drain the gearbox of liquids. 


As our gearbox got stiffer recently, I removed it and it appears that those 2 holes are not through openings.. thus not acting as drains. And the gearbox was full of rainwater up to the attachment bolts. Arno tells me he saw the same. 

So the teflon bushing got very dirty and stiff with all sorts of deposits. 


Does anybody know why the drains are no longer machined through? Is it an A54 “innovation”? 

It doesn’t really make sense and I’m thinking of drilling those holes all the way through to reinstate the drain. Any word of advice against that idea?


Thanks for your input








Tahuata, French Polynesia 



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