AT-45 A340E (2JZ-GTE) AUTOMATIC TRANSMISSION - OVERDRIVE BRAKE AT0DU-04 OVERDRIVE BRAKE INSPECTION 1. INSPECT DISC, PLATE AND FLANGE Check to see if the sliding surface of the disc, plate and flange are worn or burnt. If necessary, replace them. HINT: ★ If the lining of the disc is peeling off or discolored, or even if a part of the printed numbers are defaced, re- place all discs. ★ Before assembling new discs, soak them in ATF for at least 15 minutes. 2. CHECK OVERDRIVE BRAKE PISTON RETURN SPRING Check the spring free length together with the spring seat. Standard free length: 17.23 mm (0.6783 in.) Printed Number AT1987 Spring Seat D4468 Z06869 AT0DV-04 OVERDRIVE BRAKE ASSEMBLY 1. INSTALL OIL SEAL RINGS (a) Coat the 2 oil seal rings with ATF. (b) Install the 2 oil seal rings to the O/D support groove, then snug them down by squeezing their ends together. NOTICE: Do not spread the ring ends more than necessary. HINT: After installing the oil seal rings, check that they ro- tate smoothly. AT5446 2. INSTALL OVERDRIVE BRAKE PISTON (a) Coat 2 new O-rings with ATF and install them on the O/D brake piston. O-Ring O-Ring AT5361 (b) Being careful not to damage the O-rings, press in the brake piston into the O/D support with both hands. AT5363