Continuing in our series of servicing residential locksets, this month we will discuss the front removable lock cylinder Weiser Lock square spindle. These Weiser knobsets have been produced for many years. They can be identified by the opening between the lock cylinder face and the knob. The early...
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Continuing in our series of servicing residential locksets, this month we will discuss the front removable lock cylinder Weiser Lock square spindle. These Weiser knobsets have been produced for many years. They can be identified by the opening between the lock cylinder face and the knob. The early model knobsets were equipped with two posts connecting the outside assembly to the inside assembly. To improve security, Weiser introduced the four-post version, adding two additional posts at 90 degrees from the two original posts. To provide protection against spindle area attacks, a shield became part of the four-post version chassis.
The two- and four-post Weiser knobset chassis are manufactured of zinc. The internal components are manufactured of stamped metal. The trim is brass. These knobsets are designed to meet or exceed ANSI A156.2, Series 4000, Grade II. Depending upon the model, Weiser knobsets can be equipped with a brass plug and zinc die cast or self-lubricating Delrin housing. The standard keyway is the Weiser "E", a five pin tumbler lock mechanism. Weiser also offers a "C" keyway plug option. These Weiser knobsets are equipped with surface-mounted screws located on the inner trim.
The Weiser square spindle, front removable lock cylinder knobsets are designed to be installed into a 2-1/8" diameter cross bore opening with a 1" diameter edge bore opening. They can accommodate up to a 2" thick door. The adjustable backset latch can fit a 2-3/8" or a 2-3/4" backset. The keyed knobsets are equipped with a deadlocking function latch that can be configured to accommodate a square, 1/4" radius, or a drive-in faceplate.
For this article, we will service the Weiser Aristocrat residential four-post knobset. Servicing procedures are the same for the four- and two-post versions.
The Weiser knobsets equipped with the front removable lock cylinders require the lock to be removed from the door in order to remove the lock cylinder. This is because the square shaft within the spindle must be pulled in order to release the lock cylinder from the exterior knob.
To gain access to the lock cylinder:
Step 1. Remove the two Phillips head screws from the inner trim. If the knobset is a two-post version, the screws are located at 3 and 9 o'clock. If the knobset is a four-post version, the screws are located at 6 and 12 o'clock.
Step 2. Remove the inner trim and the outer knob assembly.
If no operating key is available, pick the lock cylinder, and rotate the plug at least 10 degrees in either direction to stop the lock cylinder from becoming locked. Continue with Step 4. If an operating key is available, continue with Step 3.
Step 3. Insert the operating key into the lock cylinder.
Step 4. Place the outside knob assembly in one hand and hold the square shaft between your thumb and first finger.
Step 5. Pull out on the square shaft until it stops. Maintain pressure.
Step 6. Rotate the plug until the lock cylinder slides out of the outside knob. The release position is approximately 30 degrees counterclockwise from the locked position.
Once the lock cylinder has been removed from the outside knob, the lock can be serviced. The plug is retained in the lock cylinder with a Tru-Arc ring.
To service the lock cylinder:
Step 1. Remove the Tru-Arc ring using Tru-Arc pliers, making sure to not pull the plug out of the housing or re-lock the cylinder.
Step 2. Use a follower to remove the plug.
Note: If the knobset has been part of a master key system, it is recommended to empty the pins and springs from the housing.
The Weiser five-pin tumbler "E" keyway lock cylinder is standard. A five-pin tumbler "C" keyway plug is available as an option. All of the lock cylinders have brass plugs and either die-cast housings or self-lubricating Delrin housings.
When originating a new key, determine the depths of the cuts. Use the following space, depth, key blank, and cutting information for originating a new key and/or combinating the lock cylinder.