AT-56 A340E(Others) AUTOMATIC TRANSMISSION - OVERDRIVE BRAKE 3. INSTALL PISTON RETURN SPRING (a) Install the piston return spring. AT1978 SST (b) Place SST on the spring retainer, and compress the re- turn spring with a shop press. SST 09350-30020 (09350-07030) (c) Install the snap ring with a screwdriver. Be sure the end gap of the snap ring is not aligned with the cutout portion of the O/D support. AT8152 4. INSTALL CLUTCH DRUM THRUST WASHER Coat the thrust washer with petroleum jelly and install it onto the O/D support. HINT: Make sure that the lug shape matches the hole on the O/D support. AT8158 5. CHECK OVERDRIVE BRAKE PISTON MOVEMENT (a) Place the O/D support assembly onto the direct clutch as- sembly. (b) Apply compressed air into the oil passage as shown, and be sure that the O/D brake piston moves smoothly. AT8149