AUTOMATIC TRANSMISSION — Component Parts (Overdrive Planetary Gear, Overdrive Direct Clutch and Overdrive One-Way Clutch) AT-71 3. CHECK PISTON STROKE OF OVERDRIVE DIRECT CLUTCH (a) Place the oil pump onto the torque converter, and then place the O/D direct clutch assembly onto the oil pump. (b) Using SST and a dial indicator, measure the O/D direct clutch piston stroke applying and releasing the compressed air (4 — 8 kgf/cm², 57 — 114 psi or 392 — 785 kPa) as shown. SST 09350-30020 (09350-06120) Piston stroke: 1.85 — 2.15 mm (0.0728 — 0.0846 in.) If the values are nonstandard, inspect the discs. SST Vinyl Tape 4. REMOVE FLANGE, PLATES AND DISCS (a) Remove the snap ring from the O/D direct clutch drum. (b) Remove the flange, two plates and two discs. 5. REMOVE PISTON RETURN SPRING (a) Place SST on the spring retainer and compress the return spring with a shop press. SST 09350-30020 (09350-07040) (b) Using snap ring pliers, remove the snap ring. (c) Remove the piston return spring. SST 6. REMOVE OVERDRIVE DIRECT CLUTCH PISTON (a) Place the oil pump onto the torque converter and then place the O/D direct clutch onto the oil pump. (b) Hold the O/D direct clutch piston with hand, apply compressed air to the oil pump to remove the O/D direct clutch piston. (c) Remove the O/D direct clutch piston. (d) Remove the two O-rings from the piston.