masthead unit/transducer/anenometer problem

[yourmomm]

my mast was recently unstepped for repair; it has now been replaced, but the anenometer on top of it now stubbornly resists rotation (see example: web page ). it was fine before the mast was unstepped. it DOES rotate but very slowly, even in quite high winds, resulting in extremely inaccurate wind reading measurements. i have been up to see if i can see the problem, but am worried about application of wd40 in case the transducer gets damaged...does anyone have any idea of what might be wrong or a suggested solution? many thanks

 

[john_morris_uk]

If its a Raymarine unit, they are very simple to unscrew and bring down to deck level and repair/replace in your own time.

I have never had any problems with WD40 harming our mast head units. Not sure about the long term lubrication properties of WD40 though...

 

[mainsale0]

Greenham Regis Marine Electronics at West Quay Road, Poole repaired my unit season before last. Might be worth giving them a ring for advice.

 

[MoodySabre]

This earlier thread on lubricating wind cups might be useful:
http://www.ybw.com/forums/showflat.php/Cat/0/Number/1214641/an/0/page/4#1214641