raymarine st60 windvane service / repair

[Birdseye]

On my new to me boat, the ST60 masthead anenomenter needs some work to the bearings. I have it in bits but I am puzzled by its construction. In particular there are two bearings in the head and I am not convinced there should be two because the inside one, which is identical in size to the bottom one, is on a bit of shaft that is machined to a smaller size that the bearing inner. In other words the second bearing rattles loosely on the shaft.

Close examination suggests that the shaft surface is machined not worn. That leaves me with two possibilities. First is that the units has been in bits befor now and been re assembled wrongly. Second is that the bearing has been replaced before by simply knocking the old seized one further in and putting a replace in where it was. To support the last theory, the inner ball race is seized solid whilst the bottom exposed one runs OK.

Just to be clear, the assembly sequence as it was when taken apart was (outside to inside) good bearing tight on 3mm shaft, seized bearing loose on shaft, middle part of shaft with diameter bigger than ball race inside, small reduced diameter bit, diameterback to 3mm, plastic doo dah with embedded magnets

Piccie

Someone must have taken one of these things to bits.

 

[greeny]

There used to be a good thread on here with photographs but it seems to have disappeared in part and the photos are missing in the archive. Here's a link to it but I'm afraid its missing a lot of content. Raymarine ST60 wind transducer refurb. problem, with photo

I found the instructions for a st50 https://www.cricalix.net/wp-content/uploads/2021/07/ST50-Wind-Transducer-Repair.pdf
but thats not what you're after. Let me go on my old pc and see if I saved the files for the st60 on there.

 

[yotter]

On my new to me boat, the ST60 masthead anenomenter needs some work to the bearings. I have it in bits but I am puzzled by its construction. In particular there are two bearings in the head and I am not convinced there should be two because the inside one, which is identical in size to the bottom one, is on a bit of shaft that is machined to a smaller size that the bearing inner. In other words the second bearing rattles loosely on the shaft.

Close examination suggests that the shaft surface is machined not worn. That leaves me with two possibilities. First is that the units has been in bits befor now and been re assembled wrongly. Second is that the bearing has been replaced before by simply knocking the old seized one further in and putting a replace in where it was. To support the last theory, the inner ball race is seized solid whilst the bottom exposed one runs OK.

Just to be clear, the assembly sequence as it was when taken apart was (outside to inside) good bearing tight on 3mm shaft, seized bearing loose on shaft, middle part of shaft with diameter bigger than ball race inside, small reduced diameter bit, diameterback to 3mm, plastic doo dah with embedded magnets

Piccie

Someone must have taken one of these things to bits.

I have attached the manual for the ST60 wind vane, hope this is useful. Or I hope it get attached!

 

[Birdseye]

I have attached the manual for the ST60 wind vane, hope this is useful. Or I hope it get attached!

You didnt quite make it, but never mind - I already have the user manual. But thanks for trying to help!