FixVault

UNDERDRIVE Clutch

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
UNDERDRIVE CLUTCH SPECIFICATION

Pack clearance 1.51 to 1.90 mm (0.0594 to 0.0748 in.)
Piston return spring free length 17.14 mm (0.6752 in.)
  Mark 1 3.0 mm (0.118 in.)
Mark 2 3.2 mm (0.126 in.)
Mark 3 3.4 mm (0.134 in.)
U/D clutch drum bushing inside diameter STD 37.06 to 37.08 mm (1.4591 to 1.4598 in.)
Max. 37.13 mm (1.4618 in.)