raymarine st 60 anemometer stop

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youen

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My Raymarine st 60( Year 2003, the spherical one) anemometer stop spinning.Is there any bearings inside?Is it easy to dismantle and change?Where can I find new parts?How to proceed?Or is it better to buy a new MHU as the actual one is 11 years old?Many thanks
 
youen said:
Sadly this post concern an older type of Mhu.Thanks
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There will be bearings in the unit, probably two and if it is like the other Raymarine MHUs, they are probably the same. In the UK we can source these from RS components. The ones for the ST50 MHU are RS Stock No. 612-5739 Link below

http://uk.rs-online.com/web/p/ball-...22677633D4E4F4E45267573743D3631322D3537333926

Whether your ST60 unit uses the same ones I have no idea but no harm in a call/email etc to Raymarine technical dept.

http://www.raymarine.co.uk/view/?id=1154

Good luck
 
ST60 earlier type is same bearings etc as mentioned above.
I would be very surprised if the later one with different shaped cups was different inside.
 
youen said:
Is it easy to dismantle and then to change the bearings,could you damage the electronics parts?Thanks
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I was unwilling to risk it myself. I rinsed the shaft and lower bearing with water, followed by WD40, 3-in-1 oil then engine oil, all with much spinning by hand and it freed up completely. There is obvious play in the bearings but it has now been running perfectly for 6 months.
 
nigelmercier said:
Be surprised. There are two nylon pods that have to be prised open, then the bearings drifted off the shafts. There is a seller on eBay with a kit, but I made my own. The bearings are the same, but there are several O-rings.
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OK, I am! Is the new design more weatherproof and longer lived?
 
Plevier said:
OK, I am! Is the new design more weatherproof and longer lived?
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It all depends how you look after them.

My ST50 system dates from 1998 and works absolutely fine. However, I take down the MHU at the end of every season and refit at the start of the next. Saves 7 months a year of being exposed to the weather.
 
davewarburton said:
It all depends how you look after them.

My ST50 system dates from 1998 and works absolutely fine. However, I take down the MHU at the end of every season and refit at the start of the next. Saves 7 months a year of being exposed to the weather.
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One note to this is that the new design spins faster at the same windspeed, so you need re-configure your display. This is why you can't use the new design with the ST50 instrument. It cannot be adjusted.
I would be surprised if the expected life-span is any better. May actually be worse given the higher speed it rotates.

I still have the square-cup version (with ST60 display) and it works quite good. I do take it off in wintertime and remove the cups. Then I set the spindle in very small bath of conserving oil (soaking). Works very well. Unit is 13 years old and has almost no play on the bearings. Both the speed and the direction have bearings.
 
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