Unusual that a Q series loader wouldn't have that fitted, it was standard when I bought a Q45 in 2007, your's must've been a special order to have it omitted?looking for an accumulator kit (Softride system) for quicke q66 loader.
Or is it just that yours has failed and its just a new accumulator bottle you want and not the whole kit, if fitted it will be electrically operated, are you sure you have power to the solenoid?