Jefa Rudder and bearing service

This is a service guide on how to maintain Jefa Marine rudder bearings. This should be done every third year.
The video is made with a Hanse 325. The principle is the same for all Jefa Marine products.

[@jacopocolombo4109]

Contrary to Jefa's own recommendation, this rudder post seems to be electrically bonded (green-yellow wire).

[@jefamarineas1734]

Hi Jacopo. You are correct. But as we are not the owner of the boat we can't just remove the wire without permission. We did recommend that the wire should be removed, or at least removed from the tiller lever connected on the stock to the owner. You can read all about our recommendation and how to prevent electrolysis here: jefa.dk/electrolysis/ Br Thor

[@alby5008]

Did you clean the bearing with normal water + neutral soap? Thx for the help

[@jefamarineas1734]

Hi Alby. Normal water from the tap with dish soap.

[@tonyheron3228]

Hi we have an issue with loose /cracked outer cage which bearing sits in what are your thoughts on this .is it an integral part of main aluminium tube regardsTony

[@jefamarineas1734]

Hi Tony. Please send us some pictures of the bearing and for what boat to [e-mail] Best regards Thor

[@StudtMarineServices]

Can this be done on moored vessels? Or will the boat sink?

[@jefamarineas1734]

Hi. Do you mean taking the rudder out? That depends if there is a rudder tube going over the waterline. But I would not recommend doing the service on the boat while it is in the water. Best regards Thor

[@iztokm2002]

P240 grid paper to sand the rudder post. Is that not to rough for bearing seat?

[@jefamarineas1734]

Hello. In normal situations yes, but this rudder stock had a lot of dirt so it was first sanded with a 240 and than a 400 grit. Our normal recommendations is to use sandpaper grit 400+ and just a light pass over the rudder stock. Best regards Thor

[@vechnyak]

What type of lubricant is it being used?

[@jefamarineas1734]

Hi! Synthetic grease (we use Castrol Synplex 2, but any winch grease will do the job).

[@TheCruisingKiwis]

@@jefamarineas1734 assume its not appropriate/ necessary to add grease to the inside of the bearing (in contact with the stainless shaft)?

[@lucabuono690]

@@TheCruisingKiwis You are right, its not.

[@TheCruisingKiwis]

@@lucabuono690 doh! We decided to anyway.