Isuzu 2000 Trooper Workshop Manual page 1691

7B–22 MANUAL TRANSMISSION
2. Using remover
J–42988, remove the 5th gear spline piece.
3. Remove the hub sleeve No.3, block ring set,
counter 5th gear, bearing and 5th shift arm.
J–42794 and attachment
226RW021
220RW101
4. Remove the synchronizer pull ring, synchronizer
cone ring, and synchronizer outer ring from hub
sleeve No.3.
5. Remove the reverse block ring from the hub
sleeve No.3. Remove the 3 inserts and 3
compression springs.
226RW066
226RW067