You'll have to remove the flywheel and inspect the clutch disk wear.
You'll need a clutch align tool to reinstall the disk if you're not
replacing it.  I don't know what exactly is replacement thickness, but
if either of the sides are getting close to rivets I'd replace it.
You may consider replacing the pilot bearing, felt grease seal,
flywheel o-ring and engine main seal at the same time.  In both of my
Vanagons I replaced the clutch because of a failed pilot bearing not
because of clutch wear.

2008/10/30 Shawn Clark <shawnclark77@yahoo.com>:
> I have my engine out, and i'm wondering what i need to look for, to tell if i need a new clutch disc.
> If i need one this would be a good time to do it.
>
> thanks
> shawn clark
> burleson tx
> 84 westy "ishmael"
>

--
Chris S.
Disclaimer: "Death and serious injury may occur"