BEST ACCESS SYSTEMS 34HW, Service Manual, Page: 97 / 228

Service and Maintenance for Mortise Locks
W Series Service Manual 4–43
6. If the lock is single-keyed, perform Task E. To turn over the
cylinder clamp plate ( page 4–46 ).
7. Perform Task H. To reinstall the mortise case cover and case
spacer ( page 4–48 ).
8. Replace the mortise case. See Reinstalling components for
IDH Max Mortise Locks on page 4–13 or Reinstalling components
for electrified mortise locks on page 4–32 .
Tasks for changing
the hand and bevel
Task A. To remove the mortise case cover and case spacer:
1. Set the mortise case on a flat surface.
2. For mortise cases with a plastic case spacer , remove the case
spacer from the case. The plastic case spacer is tension mounted.
For mortise cases with a metal case spacer , remove the case cover
screw from the case spacer. Remove the case spacer.
3. Remove the case cover screws. There are five screws total.
4. Carefully remove the case cover. Many parts are spring loaded and
may shift.
Task B. To remove and turn over the hubs:
1. Remove the top hub from the case, maintaining the hub’s
orientation.
2. Push the hub lever toward the side of the case and remove the
bottom hub from the case. Maintain the hub’s orientation.
3. Turn over the hubs.
Figure 4.40 Turning over the hubs (IDH Max, LH RB orientation shown)
Top hub
Hub lever