Marzocchi forks help, please...

[Cavalol]

Does anyone know how to top up the oil on these old Marzocchi forks, please? I think (from on-line) check they’re XC600s. Obviously, the seals may have gone but I’d like to refill and see what happens. Idiot’s guide/pictures most appreciated, thanks in advance...

 

[dan_bo]

You'd get help for this on the retrobike forum

 

[Cavalol]

Sorted now, thanks. Thicko here didn't realise they are air shocks

 

[Hugh Manatee]

Sorted now, thanks. Thicko here didn't realise they are air shocks

What are they damped with?