Once you've taken one apart it is quite easy to see how it all goes back together again. After cleaning and painting parts I greased up the drive assembly... (Please note Bosch recommends oil on all moving parts - it was my personal choice to use grease)
...attached the solenoid actuating arm and placed it into its housing.
I applied grease to the bearing surface here too. I believe these bearings are meant to be soaked in oil prior to insertion to the assembly – I decided to use grease – but you could try oil with the bearings in place. Good luck with that!
(Yet again - Please note Bosch recommends oil on all moving parts - it was my personal choice to use grease)
Next I fitted the bolt that holds the actuating arm in place...
...and put the metal cover and rubber top in place.