To access the remainder of this piece of premium content, you must be registered with Locksmith Ledger. Already have an account? Login
Register in seconds by connecting with your preferred Social Network.
Complete the registration form.
Step 8 . Turn the outside thumbturn clockwise until it stops, then release. The new combination has been set.
While keeping the door open, try the new combination at least three times.
Try to retract the latch or bolt just by rotating the outside thumbturn counterclockwise, then clockwise. If the lock unlocks, the combination has been set to a zero code. Repeat steps 3 through 8 to set the desired combination.
Step 9 . Once the new combination operates the lock, install the screw.
Should the combination no longer be available, the only way to reset the combination chamber is by removing the combination chamber from the lock assembly.
DECODING AN UNKNOWN COMBINATION
Kaba Access Control has determined a new method for decoding an unknown combination. This new method does not require removing the “e” ring and disengaging the unlocking slide. It actually decodes the unknown existing combination. Once decoded, the combination can either be kept or cleared and a new combination can be set.
Step 1 . Remove the Simplex lock from the door by removing the three mounting screws from the interior side of the door
Step 2 . Remove the two screws and flange washers securing the center plate/barrel assembly.
Step 3 . Remove the two screws securing the gear plate from the lock housing.
Step 4 . Remove the two screws and lift the combination chamber from the lock housing.
The combination chamber can now be decoded.
Step 1 . Carefully remove the three-sided dust cover marked Simplex/Kaba Simplex by detaching it from the staked joints at each end of the chamber.
Step 2 . Hold the combination chamber in one hand by the screw tabs on each end with the key stems pointing up with the control shaft at the bottom.
Step 3 . Rotate the control shaft counterclockwise and release to clear the combination chamber.
Step 4 . Look at the locations of the five code gear pockets. If any code gear pocket is at the shearline, it can be ignored as it is in the open position. Look at the code gears whose pockets are not in the open position (shear line).
Step 5 . Find the code gear whose pocket is the farthest away from the open position. If two gear pockets are in similar positions, they were probably pressed at the same time when the combination was originally set.
Step 6 . Depress the key stem(s) that controls the code gear(s) that is the farthest away from the open position. Release the code stem(s). The code gear pocket(s) should move toward the open position. Repeat Step 6 until all of the code gears pockets line up in the open position.
Realigning the code gears takes some practice. If a code gear pocket passes the foot of the unlocking slide, the chamber must be reset and decoding must be started over. A good way to learn is to use a code chamber with a known combination and see how pushing the key stems as if you were entering the combination causes the code gears to move and line up with the pocket aligned to the foot of the unlocking slide.
Once the five code gear pockets are aligned, the new code can be entered.
Step 7 . Depress the lockout slide at the top of the chamber. Release the slide. The lockout slide should remain depressed.
Step 8 . Rotate the control shaft counterclockwise to clear the chamber. The lockout slide should pop out although the button should remain depressed.
With the code gear pockets in the open position and the control shaft clearing the code chamber, a new combination can be entered.
Step 9 . Kaba Access recommends entering the 3 and 5 simultaneously, then entering 4, releasing each key stem after it has been depressed. This is the factory default code of 2 and 4, then 3, if the code was being entered using the pushbuttons.
Step 10 . Once the new combination has been entered, turn the control shaft clockwise. The code change button under the lockout slide should pop up to accept the code.
We will install, change the combination, clear a lost combination, and troubleshoot some common problems on this workhorse of a pushbutton lock.
Time to Install: 15 to 30 minutes Necessary Tools: 1-3/16” bit...
These locks protect classrooms because the teacher is able to lock the exterior trim without leaving the interior of the classroom.