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Service and Maintenance for Mortise Locks

4–28 W Series Service Manual

Task C. To remove the core and cylinder:

Note:

Only EWEL, EWEU, WWEL, and WWEU lock functions have a core

and cylinder.

1. Insert the control key into the core and rotate the key 15 degrees to

the right. Remove the core.

2. Loosen the cylinder clamp screw, located inside the mortise case.

3. Using a narrow-bladed screwdriver, insert the blade into the figure-8

opening and back the cylinder set screw into the cylinder until the

tip of the screw is below the threads of the cylinder.

Figure 4.27 Location of the cylinder clamp screw

(view from the edge of the door)

Cylinder clamp screw

Lock case

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BEST ACCESS SYSTEMS 35HW Wartungshandbuch Seite 82