AT-66 A340E(Others) AUTOMATIC TRANSMISSION - FORWARD CLUTCH 3. CHECK FORWARD CLUTCH DRUM BUSHING Using a dial indicator, measure the inside diameter of the forward clutch drum bushing. Maximum inside diameter: 24.08 mm (0.9480 in.) If the inside diameter is greater than the maximum, re- place the forward clutch drum. AT8171 AT05S-08 FORWARD CLUTCH ASSEMBLY 1. INSTALL OIL SEAL RINGS (a) Coat the 3 oil seal rings with ATF. (b) Install the 3 oil seal rings to the forward clutch drum groove, then snug them down by squeezing their ends to- gether. NOTICE: Do not spread the ring ends more than necessary. HINT: After installing the oil seal rings, check that they ro- tate smoothly. AT8172 2. INSTALL NEW O-RING TO FORWARD CLUTCH DRUM Coat a new O-ring with ATF and install it on the forward clutch drum. 3. INSTALL FORWARD CLUTCH PISTON (a) Coat new O-rings with ATF and install them on the for- ward clutch piston with a screwdriver. AT8179 (b) Being careful not to damage the O-rings, press the clutch piston into the forward clutch drum with both hands. AT8442 4. INSTALL PISTON RETURN SPRING (a) Install the piston return spring. AT8173