Re: Mizzen furler gearbox, A54 peculiarity?
Thank you Randall for the detailed explanation.
Mohammad and Aty
AMEL 54 #099
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Randall via groups.io
Sent: Friday, May 15, 2020 3:28 AM
Subject: Re: [AmelYachtOwners] Mizzen furler gearbox, A54 peculiarity?
Hello Mohammad and Aty,
Were you able to simply untwist the bottom cap of the furler assembly with the tool you sketched
Unbolt the furler from the foil, I used the uphaul to raise the foil enough to clear furler. Remove 2 bolts that hold furler to the mast.
Then you will need a sturdy vice and a form of wrap to protect the aluminium casing from the vice teeth.
First loosen the bottom, counter clockwise. Just a turn or two.
Then remove the cranking shaft, (keeping the cracking shaft in the furler, while loosening in the bottom, just helps hold the furler while loosening the bottom.)
Then finish removing the bottom. Caution first set of bearings are under the bottom cap.
The tool I showed was a square metal bar with two holes. The holes are the same spacing as the furler holes. The drill bits are the same size and simply use the bottom of the drill bits through the bar, and that will give you the ability to undo the end cap counter clockwise, and still have the two drill bits for future use.
All that was required was to clean everything inside? Were you able to reuse the bearing?
The bearings are dry, the same as in your travelers. I simply cleaned them and put them back in, no grease. They were very coated in salt, but not damaged.
The main issue was the Delrin/plastic inserts for the crank. After very carefully removing the Delrin, I cleaned and as I recall used some lithium grease on the gear shaft.
If I had to guess, the grease may not have been needed.
Any other parts or lubrications needed?
If the mizzen is only stiff this can be done in a short time. I have attached the problem area picture and one from Bill Rouse showing the Delrin. I believe this is from his book, showing the Delrin pieces, there are two.
Also the holes in my furlers bottom did go straight through to give drainage as you can see in the teardown picture.
The hole project should only be time and some white grease.
Reassembly had only one puzzle ring moment! When you go to put the upper bearings in, push the internal mechanism in to a point you can just fit the upper bearings in then the rest will be easy.
Hope that helps,
On Thu, May 14, 2020 at 10:46 PM Mohammad Shirloo <mshirloo@...> wrote: