This procedure tells you how to do these adjustments:
- 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 TSC hose. 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.
Remove the TSC seal housing  and the TSC seal . If the seal housing has hoses attached to it, remove them. 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 TSC seal and TSC seal housing. If you removed hoses from the housing, connect them.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 tubes to the solenoid. Connect the TSC hose. Connect the proximity-switch and solenoid cables. Do this section again: "VMC - 20/30/40-Taper - Drawbar Height - Check."
- Assemble the pressure gauge service kit.
- Use the pressure kit to adjust the TRP pre-charge.
On some machines, you cannot adjust the regulator. Use the pressure-gauge assembly to make sure the regulator operates correctly. Do these steps to make sure the regulator  operates correctly:Adjustable regulator:
Push and hold the button on the pre-charge solenoid valve . Do this for 20 seconds.Pull the regulator adjustment knob to unlock it. Set the air pressure to 30 psi (2.1 bar). Release the solenoid button. Push and hold the button on the solenoid valve , again. Do this for 20 seconds.
Make sure the gauge shows 30 psi (2.1 bar). Release the solenoid button. Push the regulator adjustment knob to lock it.Non-adjustable regulator:
Push and hold the button on the pre-charge solenoid valve . Do this for 20 seconds.Make sure the gauge shows 30 psi (2.1 bar). If the gauge does not shows 30 psi (2.1 bar), the regulator is defective. Replace the regulator.
Both: Remove the pressure-gauge assembly from the regulator.
Find the nut to adjust the height of the proximity sensor. Use a wrench to turn the nut.
Turn the nut until the light on the sensor goes off. Turn the nut 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.
Make sure Draw Bar Open = 0.
Make sure that Draw Bar Open stays 0. If Draw Bar Open does not stay 0, the adjustment is not correct. Do Steps 2 and 3 again.
Push and hold the tool release button.
Make sure that Draw Bar Open changes to 1. If Draw Bar Open does not change to 1, the adjustment is not correct. Do Steps 2 and 3 again.