AT-61 A340E(Others) AUTOMATIC TRANSMISSION - DIRECT CLUTCH AT8250 4. CHECK PISTON STROKE OF DIRECT CLUTCH (a) Place the direct clutch assembly onto the O/D support assembly. SST AT8166 (b) Using SST and a dial indicator, measure the 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: 1.37-1.60 mm (0.0539-0.0630 in.) If the piston stroke is less than the limit, parts may have been assembled incorrectly, so check and reassemble again. If the piston stroke is non-standard, select another flange. HINT: There are 8 different thicknesses for the flange. Flange thickness mm (in.) No. Thickness No. Thickness 33 3.0 (0.118) 29 3.4 (0.134) 32 3.1 (0.122) 28 3.5 (0.138) 31 3.2 (0.126) 27 3.6 (0.142) 30 3.3 (0.130) 34 3.7 (0.146) AT3153 5. INSTALL CLUTCH DRUM THRUST WASHER Coat the thrust washer with petroleum jelly and install it onto the direct clutch. AT8153 6. INSTALL DIRECT CLUTCH TO FORWARD CLUTCH (a) Align the flukes of discs in the direct clutch. (b) Install the direct clutch onto the forward clutch.