Third Clutch And Sprag Unit: Disassembly

Place the third clutch drum and intermediate shaft assembly upright, using the overdrive internal gear as a support.
Locate the ends of the retaining ring. Depress one end of the ring using a small screwdriver instead of the depressor handle provided with the tool J-38450-A. Slide one blade down between the third clutch drum and the retaining ring.
Remove a screwdriver and repeat this step for the other end of retaining ring.
Install the remaining four blades approximately (five) notches apart using a screwdriver to depress the retaining ring.
Pull up on input sun gear and sprag unit assembly (1 and 2) to release the retaining ring from third clutch drum assembly (8).
Remove the tool blades.

Fig 1: Removing Tool J-38450-A Blades
Courtesy of ISUZU MOTOR CO.
Remove retaining washer (3), bearing (4), thrust washer (5), and clutch plates (6 and 7) from the third clutch drum assembly (8).