Hyundai Sonata 1991 Shop Manual page 458

AUTOMATIC TRANSAXlE ASSEMBLY
If an impact driver is not available, use a punch or something
similar.
39. Remove idler shaft lock plate.
40. Loosen transfer idler shaft with special tool.
09454-21100
41. Pull out transfer idler shaft. Remove transfer idle gear
bearing inner races (2 pieces) from inside of case.
45-69