Thanks for this reminder Tony! Unfortunately I havent been flushing after using in a swimming pool thinking this was fresh water - nope!!! The chlorine is enough to cause corrosion in thrusters that have never been near saltwater.
Just wondered whether you had any advice about what solvent (alcohol?) should be used to remove any petroleum based residue from products like WD40 and CorrosionX? There is no way I can remove the lug screw that fixes the stainless ring on the rotor spindle let alone the rust without something like this. Some invariably gets on the plastic mounts so need a way to remove this before it does any damage.
Also wondered if its sensible to use locktight when replacing this lug screw? Have noticed this can be a little loose, resulting in some ‘play’ in the motor and observed some scratches on the rotor spindle. Thinking maybe this might prevent rust from siezing the thread so (counter intuitively) making it easier to get off when corroded?
Also a tip for anyone struggling to get that lug screw (see thread) undone due to corrosion - make sure you purchase a relatively expensive allen/hex key (eg. Wera) as anything else will just round off the screw. In my experience it is very difficult to remove using standard techniques without destroying the stator mount!