Max Power Bow thruster

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dougg

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Max Power Bow Thruster
Apart from removing the S/S inch long grub screws, how do you remove the propellers?
What are they made of?
THanks
 
Mine is a duo composite so it has no need for an anode, according to the owners manual.
The manual makes reference to applying silicone grease to the shafts each year after refitting the propellers.
It does not tell you how to get them off.
 
They do have a version with a bronze leg but the manual is on the boat in Spain. My version has the composite leg & props. and I think these are the most common type. So no anode on these as already mentioned.

I think that mine is a CT-80 and the composite drive leg is pre-filled with oil and sealed for life. Only maintenance suggested is the annual prop. removal to put on silicone grease to prevent the build up of calcium on the drive shafts and avoid damage to the oil seals.

I found the props. easy enough to remove but had to clean out the Allen key grub screws with a small drill bit (turned with fingers) and a small screwdriver. The grub screws were a little tight and I also had to wiggle each prop. back & forth a little to persuade them to come off after loosening the grub screws. I coated the bearing seal and shaft with silicone grease (from Toolstation) and am hoping that they'll be easier to remove next season.
 
Last edited:
Mistroma.
Thank you. So it is just a case of pulling them once the grub screw was out?
You and I have same hull and same year of manufacture so I guess it will be the same one.
I must dig out those pictures for you.
Doug
 
Doug,

Same question on a Jeanneau forum so assume there's a good chance that's your query as well and didn't post a duplicate reply there.

Only real problem I had was danger of stripping the Allen key grub screws as they were pretty stiff. However, they are quite deep once you dig out all the antifoul, marine life etc. I left some penetrating oil & diesel in each one for a few hours with the grub screw uppermost. That seemed to help and I never got to the point where I felt anything was being stripped.

Pulling the props. was actually pretty easy by comparison (once you know that twisting & pulling will work).

I also pulled the fuse before starting work even though that battery wasn't even connected. You do need to make certain that the props go fully home when assembling. The drive/shear pin can slide off centre so rotate shaft so that hole is parallel with ground and put a little silicone grease around the pin. Then make certain that prop. is correctly positioned with grub screw going in to groove in shaft. Prop. should be pretty loose after cleaning so easy enough to feel when you get the correct position.

I might have some pics. around showing the dismantled bits & pieces (not that they show much).
 
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