McCleod hydraulic throw out bearing adjust

MV8 said
A 1400 has a threaded adjustment. A 1300 uses shims or a special piston. The clearance is taken up by the hydraulics when bled and there is no return spring to pull it back. Hydraulics self-adjust for wear. That is the point of having the clearance.

Again, there are literally MILLIONS of oe hydraulic TO’s that do not require clearance, and in fact will not work if they’re set with an air gap.