Mixer tap cartridge help

[Burgo]

The van is a 2019 dethleffs Globebus T7. The kitchen tap has started leaking from the top of the swivelling section. I was looking to pull out the cartridge with a view to changing it but can't see the typical brass nut. It's a tap with a microswitch in it - that lifts off with the handle (see pic).
Inside there's a very small cross point screw (see pic at around 11:00 position). I've loosened that off but nothing seemed to want to start moving when I tug on the square shafts.
Any suggestions, please - and does anyone know the tap model as the spout hasn't got the usual Reisch curve on the lower side.

 

[Richard n Ann]

That looks the same as our tap, I think nowadays people just replace the tap

 

[BouncyBoatFolk]

It's the cartridge letting by. You have to remove the screw in the outside plastic ring, [ noting it's position].
You then need to turn that plastic ring to release the cartridge. You will see the locating lugs on the outer shell. I found some small pipe pliers work. Be careful around the micro switch wires. I've done a couple on our Sunlight, if you have a google you'll find videos of how to do the job.
Replacement 35mm cartridges are available at Screwfix at about £7.50. Buy a couple.
Mike.

 

[Landy Andy]

You may find the dome section of your tap unscrews off. But either way the nut holding your cartridge in place is the bit where a screw has been shoved through. Remove screw and then alter nut.