BEST ACCESS SYSTEMS 34HW, Service Manual, Page: 91 / 228

Service and Maintenance for Mortise Locks
W Series Service Manual 4–37
Task F. To reinstall the cylinder and core:
Note: Only EWEL, EWEU, WWEL, and WWEU lock functions have a core
and cylinder.
1. If installing a new cylinder:
a. From the outside of the cylinder, thread the slotted head of the
set screw into the cylinder. See Figure 4.35 .
b. Using a narrow-blade screwdriver, insert the blade into the
cylinder’s figure-8 opening and back the set screw into the
cylinder until the tip of the set screw is below the threads of the
cylinder.
2. Make sure that the cylinder ring are positioned on the cylinder.
3. With the mortise cylinder wrench inserted into the core hole, insert
the cylinder assembly into the cylinder hole on the outside of the
door. Rotate the mortise cylinder wrench clockwise until the
cylinder ring is flush against the door.
4. Using a narrow-blade screwdriver, insert the blade into the figure-8
opening and tighten the cylinder set screw into the lock case.
Figure 4.35 Threading the set screw
Figure-8 opening
Slotted head of cylinder set screw
Cylinder
Groove