Hyundai Sonata 1991 Shop Manual page 474

AUTOMATIC TRANSAXLE ASSEMBLY
38. Install the anchor rod.
39. Assemble a new seal ring (large diameter) and O-ring (small
diameter) to the kickdown servo piston, and install a new
O-ring in the groove around the sleeve; then assemble the
kickdown servo spring, piston and sleeve in the transaxle
case.
40.
Press the kickdown servo and sleeve in by using special tools
(09222-21001, 09456-21100),
and then install the snap
ring.
41.
Install kickdown band; attach the ends of band to the ends
of anchor rod and servo piston rod.
45-85