AT-52 A340E(Others) AUTOMATIC TRANSMISSION - OVERDRIVE DIRECT CLUTCH SST Vinyl Tape AT4448 (b) Using SST and a dial indicator, measure the overdrive direct clutch piston stroke while applying and releasing compressed air (392-785 kPa, 4-8 kgf/cm², 57-114 psi). SST 09350-30020 (09350-06120) Piston stroke: SUPRA: 1.45-1.70 mm (0.0571-0.0669 in.) OTHERS: 1.85-2.15 mm (0.0728-0.0846 in.) If the piston stroke is less than the limit, parts may have been assembled incorrectly, check and reassemble again. If the piston stroke is non-standard, select another flange. HINT: There are 6 different thicknesses for the flange. Flange thickness mm (in.) No. Thickness No. Thickness 16 3.6 (0.142) 19 3.3 (0.130) 17 3.5 (0.138) 20 3.2 (0.126) 18 3.4 (0.134) 21 3.1 (0.122) AT8139 9. INSTALL OVERDRIVE DIRECT CLUTCH ASSEMBLY (a) Align the flukes of the discs in the direct clutch. (b) Install the direct clutch assembly onto the O/D planetary gear. Free Lock Turn Hold AT8138 10. CHECK OPERATION OF ONE-WAY CLUTCH Hold the O/D direct clutch drum and turn the input shaft. Check that the input shaft must be able to turn freely clockwise and locks counterclockwise.