Wheel off, caliper loosened, disc is now unattached?

[The Don of Croy]

Just checking caliper operation on a binding font wheel (MR2 Roadster), having removed wheel and rotated caliper up to get at the pads (very stiff - corroded into place partially) the brake disc is now free to flop about...

Shouldn't the disc be secured with a couple of bolts?

My understanding is the studs that come through the disc and wheel are the main fastener, but I'd expected the disc to be located by it's own bolts...

I haven't had time to remove another wheel and compare - it's going home time - but come Monday at 08:15 I'll be back to compare.

In the meantime, any comments from the fount of knowledge that is PH? And thanks...

[The Don of Croy]

Thanks for the replies. Especially Ron (who needs to know this is the first time I've been behind the wheels, having had it serviced at a main dealer for the last four years, so somebody there has decided not to re-fit the grub screws for whatever reason).

The calipers are moving better now - after de-corroding - and I think I fitted it the right way round.

I'll be removing the other one this am to see how many grub screws I need to retrieve from the local dealer.

Edited to remove further sarcasm.