Isuzu 2000 Trooper Workshop Manual page 538

16. Engage the 2WD–4WD sleeve with the 4WD side and
install the spring pin.
17. Install spring pin and bridge.
18. Install detent ball, spring and plug and tighten the plug
to the specified torque.
Torque: 25 N·m (18 lb ft)
TRANSFER CASE (STANDARD TYPE)
262RW022
4D1–17