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Changing the clutch spring on a Desoutter SD series pneumatic shut-off screwdriver

This video will show you how to replace the clutch spring on an SD series driver.

 

In this video, Jon demonstrates how to change the torque spring on a Desoutter SD series pneumatic shutoff screwdriver. In order to change out this spring, the clutch housing of the screwdriver must be removed using a vice and a spanner wrench. A summary of the steps taken to complete this process is outlined below for your convenience:

 

1. Clamp the nose section of the screwdriver in your vice.

2. Take your spanner wrench and place it on the flat points just under the red ergonomic grip.

3. Unscrew the body from the clutch housing by turning your spanner wrench to the right (if viewed from above) as this component uses a left-hand thread.

4. Place the body of the driver aside, and slowly pull the clutch up and out of the clutch housing.

5. Using a lockring plyer, remove the lock ring on the top of the clutch and set it aside.

6. Using the torque adjustment key that was included with your screwdriver, place it in one of the adjustment holes at the top of the clutch and turn it to the right until the adjustment ring uncrews from the top of the clutch. DO NOT TURN THE CLUTCH UPDSIDE DOWN as there are ball bearings that can easily be lost if you are not careful. Now carefully remove the adjustment ring from the top of the clutch and set it aside.

7. Remove the bearing that is on top of the clutch spring, and be careful not to lose the metal ball that sits in the channels on the clutch shaft and the bearing.

8. Remove the clutch spring and replace it with your new clutch spring.

9. Replace the bearing on top of the clutch spring, and make sure the metal ball is in the channels on both the clutch shaft and the inside of the bearing. The driver will not operate properly if this ball is not replaced.

10. Place the adjustment ring back onto the clutch shaft over the top of the bearing making sure that the indentations that correspond to the ball bearings are facing down toward the bearing. Screw the ring on until you feel the bearings click and engage.

11. Replace the lockring back onto the top of the clutch with your lockring plyer, and then place the clutch back into the clutch housing.

12. Screw the body of the tool back onto the clutch housing by turning to the left.

13. Use your lockring plyer to make sure the body is snug.

14. Your driver is now ready to use. If you need more torque, slide the ring on the end nose of the tool around until your clutch is exposed. Use your clutch adjustment tool to adjust the torque and try your application again.

 

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