- drawbar height
- proximity sensor ("switch") position for the engaged (clamped) drawbar.
If the block moves, go to Step 4. If the block does not move, go to Step 5.
Do this step if the block moved in Step 3.
Do this step if the block did not move in Step 3.
Disconnect the proximity-switch and solenoid cables at the solenoid bracket.Disconnect the pre-charge and tool-release air tubes from the solenoid. Lift the TRP assembly from the spindle and move it forward to remove it.
Use an open-ended wrench to hold the TRP shaft. Use a closed-end wrench to turn the TRP bolt  clockwise to loosen.
Install the TRP bolt into the bottom of the TRP. A torque wrench is not necessary to tighten the TRP bolt. Install the TRP assembly into the machine. Torque the TRP screws. Refer to Haas Fastener Torque Specifications. Use the value for iron.Connect the pre-charge and tool release air tube to the solenoid. Connect the proximity-switch and solenoid cables. Do the "DRAWBAR HEIGHT CHECK" steps again.
Find the knob on the pre-charge air regulator. Turn the knob clockwise until it stops.
Make sure no tool is in the spindle.
Turn the main air pressure regulator clockwise one half turn.
If you hear the TRP hit the drawbar, turn the main air pressure regulator clockwise one quarter turn.
Find the bolt to adjust the height of the proximity sensor. Use a wrench to turn the bolt.
Turn the bolt until the light on the sensor goes off. Turn the bolt 1/2 of a turn in the same direction.
Make sure that the light on the sensor goes off each time you push the button.