Why can't a new spring cage or driver be installed on an older AL lock?

In 2002 the Schlage AL-Series underwent a design change that affected the spring cage, driver, and plastic insert.  Spring cage and driver replacements for AL locks manufactured before this design change are not available, instead all of the following parts would have to be replaced as the current design is not compatible with the previous design. Table 1 lists the parts needed to replace the spring cages and drivers on a pre-2002 AL-Series lock.

 

Replacement Part Name Door Range Replacement Part Number
New Driver (2 each) 1 3/8”-1 7/8”  A700-039
2”  A700-043
New Driver Cap (2 each) 1 3/8”-1 7/8”  A700-041
2”  A700-041
KIL Plastic Adapter (2 each) 1 3/8”-1 7/8”  A700-044
2”  A700-034
4-Tab Inside Spring Cage N/A A100-053
4-Tab Outside Spring Cage N/A A100-054

Table 1: Current KIL AL parts to replace pre-2002 design
 

 Click the New AL-Series Driver and Spring Cage Enhancements commercial update for more information.

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