AT-58 AUTOMATIC TRANSMISSION — Component Groups (Overdrive Input Shaft and Clutch) 4. INSTALL THRUST WASHER AND ONE-WAY CLUTCH (a) Install the thrust washer, facing the grooves upward. (b) Install the one-way clutch in correct direction. (c) Install the thrust washer. (d) Install the snap ring. NOTE: Be sure that the spring cage side of the one-way clutch faces toward the front of the transmission. 5. INSTALL CLUTCH PISTON IN OVERDRIVE CLUTCH DRUM (a) Install new O-rings on the piston. Coat the O-rings with ATF. (b) Press the piston into the drum with the cup side up, being careful not to damage the O-ring. 6. INSTALL EIGHTEEN PISTON RETURN SPRINGS AND SET RETAINER AND SNAP RING IN PLACE 7. COMPRESS RETURN SPRINGS AND INSTALL SNAP RING IN GROOVE (a) Place SST on the spring retainer, and compress the springs on a shop press. SST 09350-20013 (09369-20040) (b) Install the snap ring with a screwdriver. 8. INSTALL CUSHION PLATE, PLATE, DISC AND FLANGE WITHOUT ASSEMBLING THINNER SNAP RING (a) Do not assemble the thinner snap ring yet. (b) Using low-pressure compressed air, blow all excess ATF from the disc. CAUTION: High-pressure air will damage the disc. Install in order: Cushion plate-plate-disc-flange (flat end down) 9. CHECK PISTON STROKE OF OVERDRIVE CLUTCH (a) Install the overdrive clutch hub and outer snap ring. (b) Install the front clutch drum on the oil pump body. With a dial indicator, measure the stroke applying and releasing the compressed air 0.5 kg/cm², 57 — 114 psi (or 392 — 785 kPa) as shown. Standard piston stroke: 1.77 — 2.58 mm (0.0697 — 0.1016 in.) If the stroke exceeds limit, the clutch pack is probably worn. If the stroke is less than the limit, parts may be misassembled or there may be excess ATF on the discs.