AT-79 A340E(Others) AUTOMATIC TRANSMISSION - SECOND BRAKE AT062-03 SECOND BRAKE ASSEMBLY 1. INSTALL SECOND BRAKE PISTON (a) Coat the 2 new O-rings with ATF and install them on second brake piston. (b) Being careful not to damage the O-rings, press the second brake piston into the second brake drum with both hands. AT8452 2. INSTALL PISTON RETURN SPRING (a) Install the piston return spring. (b) Install the spring retainer. AT8185 (c) Place SST on the spring retainer, and compress the return spring with a shop press. SST 09350-30020 (09350-07040) (d) Using snap ring pliers, install the snap ring. SST AT8438 3. CHECK SECOND BRAKE PISTON MOVEMENT Make sure the second brake piston moves smoothly when applying and releasing low-pressure compressed air to the second brake drum. AT8439 4. INSTALL THRUST WASHER Coat the thrust washer with petroleum jelly and install it. HINT: Make sure that the cutout portions of thrust washer match teeth of the spring retainer. AT8184