Wiper motor arms

[Mamsberlingo]

Hi folks , just wondering if you can help out...

On my mams berlingo the wipers stopped today , she thought it was a fuse, I've had a look , motor still turning , but arm has become disconnected to the wiper arm bit , I've taken the plastic covers off and managed to reconnecting the arm from the motor to the spindle and then the other arm to drivers arm....

But is there are circlip to hold the arms with the rubber grommets onto the spindle ?

Or is it just a good push fit when the rubber grommets are good in the arms?..

Thanks in advance and apologies if I have rambled on a bit..

[ulysses]

They are push fit, but do wear..