
Service and Maintenance
40H Series Service Manual 6–5
CHANGING THE FUNCTION FOR UNIVERSAL CASES
This section provides instructions for changing the function for the
45H & 47H universal mortise cases (UNR, UNAB, and UNT). For
information about which inside and outside trim kits to use with each
function, see Working with trim kits on page 2-3.
Changing the
function for
UNR cases
The UNR mortise case can be configured for any of the following
functions:
■ A
■ AT
■ D
■ INL
■ N
■ NX
■ R
To convert the UNR case from one function to another, you need to
adjust the shuttle screw positions and possibly the hub toggle positions.
To adjust the shuttle screw positions:
Refer to the table and guidelines below. Also, see Figure 6.4.
Note: To position the shuttle, insert a screwdriver into the opening for
the thumb turn hub and rotate the shuttle.
■ For an N function, position the shuttle towards the face of the case
and move the shuttle screw from position 0, 2, or 3 to position 1. If
converting from an A function configuration, move the shuttle screw
from position 4 to position 5.
■ For a D, NX, or W function, position the shuttle towards the back
edge of the case and move the shuttle screw from position 0, 1, or 2
to position 3. If converting from an A function configuration, move
the shuttle screw from position 4 to position 5.
■ For an A function, position the shuttle in the middle of the case and
move the shuttle screw from position 0, 1, 2, or 3 to position 4.
Then move the shuttle screw from position 5 to position 2.
Function Shuttle screw positions
A2 & 4
AT, INL, R 0 & 5
D, NX, W 3 & 5
N1 & 5
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