---
title: Calibrate nipple motors
description: After maintaining or replacing the nipple hand servo motors, ensure correct calibration for precise wheel truing.
---

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# Calibrate nipple motors

## After maintaining or replacing the nipple hand servo motors, ensure correct calibration for precise wheel truing.

To calibrate the Nipple servo-motors to 100Ncm, follow these steps:

**Preparation:**

- Lock the left side nipple key with an accessory (1).  
  ![](https://knowledgebase.hollandmechanics.com/hs-fs/hubfs/image-png-Oct-11-2023-06-30-52-1128-PM.png?width=200&height=273&name=image-png-Oct-11-2023-06-30-52-1128-PM.png)
- Access the "TEST NIPPLE MOTORS" menu on TEST.  
  ![](https://knowledgebase.hollandmechanics.com/hs-fs/hubfs/image-png-Oct-11-2023-06-32-23-2389-PM.png?width=400&height=300&name=image-png-Oct-11-2023-06-32-23-2389-PM.png)

**Calibration Procedure:**

1. Activate the servo-motor in "Screw" mode (only for this direction the torque feedback is enabled). Position the cursor in front of line 1 and press \<ENTER\>.
2. Dial in a torque value of 100Ncm in front of line 5. Place the cursor in front of line 5, press \<ENTER\>, and adjust the value using \<►+\> until it displays 100Ncm.
   
     - Note: You may see a different torque value on the right side of the screen, e.g., +/- 55Ncm. To reset it to 100Ncm, press \<F5\>.
     - Caution: Activate the locked servo-motors for the shortest possible duration to prevent overheating.
3. Deactivate the servo motor on line 1 by pressing \<ENTER\>. The "\*" symbol will disappear.
4. On line 5, lower the torque value to 0Ncm by pressing \<-◄\>.
5. Repeat the same calibration procedure for the right side motor.

Following these steps will accurately calibrate the Nipple servo-motors to 100Ncm.

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