AT-74 A340E(Others) AUTOMATIC TRANSMISSION - PLANETARY SUN GEAR 3. REMOVE THRUST WASHER FROM SUN GEAR INPUT DRUM AT1642 4. REMOVE 2 OIL SEAL RINGS AT8189 5. REMOVE SUN GEAR INPUT DRUM FROM PLANETARY SUN GEAR (a) Use a wooden block or similar, as work stand. AT8190 (b) Using snap ring pliers, remove the snap ring. (c) Remove the sun gear input drum from the planetary sun gear. AT7897 6. REMOVE SNAP RING FROM PLANETARY SUN GEAR AT8182