Every operator of a Ditch Witch directional drill, like the JT20, knows the frustration of a seized Saverlok. It's a common maintenance task that can turn into a major headache if you don't have the right technique.

Based on a helpful video tutorial, here is a step-by-step guide to successfully breaking loose and replacing that stubborn Saverlok.

The Secret Ingredient: Heat (and Lots of It)

The number one reason operators fail to remove a Saverlok is insufficient heat. You can't just warm it up; you need to thermally expand the metal to break the bond.

1. Prepare Your Torch: Forget your standard torch tip. You'll need a torch with a large rosebud tip to generate the required amount of heat.
2. Apply Heat Safely and Strategically: This is the most critical step.
   • Angle is Everything: Direct the torch at the Saverlok connection area, but you must angle the flame away from the machine's hard lines, hoses, and seals. Directing heat towards the carriage body can damage critical components.
   • Get a Helper: Have a second person sit in the operator's seat to slowly rotate the shaft while you apply heat. This ensures the area is heated evenly.
   • The Goal: Heat the area until it is "very, very, very hot" – think red hot, and don't be alarmed by a little smoke. You are trying to swell the metal right where it connects.

The Breakout and Removal

Once the component is properly heated, you need to act quickly with the machine's onboard tools.

3. Position the Breakout Tool: Place the breakout tool over the Saverlok, gripping it firmly at the hex.
4. Clamp and Break: Bring the system forward. Clamp down on the tool with the front vise. Now, use the machine's rotation breakout function to spin the shaft. If you've used enough heat, you'll hear a distinct "big pop" as the lock breaks loose.
5. Spin Off the Nut: After it pops loose, the Saverlok acts like a nut. Continue to spin it until it comes completely off the shaft.

Precision Installation

Installing the new Saverlok is less about brute force and more about alignment.

6. Align the Splines: Take a close look at your new Saverlok and the end of the shaft. You'll see splines inside the lock that must line up exactly with the channels on the shaft. Misalignment can cause damage.
7. The "Rear Vise" Method for Easy Install: The video recommends a specific trick for a smooth installation:
   • Hold the new Saverlok in place using the rear vise.
   • Slowly push the carriage forward. Watch closely as you do this to ensure the splines engage perfectly with the channels.
   • The forward pressure should also help seat the new O-ring into place.
8. Final Tightening: Once the Saverlok is seated, thread the nut portion back over the end. Use the breakout tool and the machine's rotation to tighten it securely onto the shaft.

By following these steps and, most importantly, not being shy with the heat, you can turn a frustrating task into a quick and routine maintenance job.