Push down on the plunger  and hold it down.
Put a tool holder  into the arm. During correct operation, the slide  moves in.
Release the plunger .
Try to remove the tool holder . During correct operation, the slide does not move in and the tool holder locks in position.
Measure the space between the slide and the tool holder. Use a feeler gauge . The correct space is between 0.015" (0.38 mm) and 0.020" (0.51 mm). If the machine is a DM-1 or DT-1, the correct space is between 0.005" (0.13 mm) and 0.015" (0.38 mm).
Add or remove 0.01" (0.25 mm) shim washers until the space is correct.
Note: Refer to Step 5 for an illustration of the shim washers.
Push [RECOVER]. Follow the onscreen instructions to complete the TOOL CHANGER RECOVERY.