schlage nd changed lever/ spring cage why

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The old D series springcage part numbers are as follows: C303-035 - Inside Springcage C303-036 - Outside Springcage These parts are no longer available.
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 ...
ND -series locks manufactured on or after January 30, 2017 use the following spring cages:Outside - N523-218 - For ALL cylinder options except for JD-YA6, JD-YA7 and JD-MEDInside - N523-222 -...
ND-series locks manufactured before January 30, 2017 used the following spring cages:
The springcage part number is L283-040.
The JD YA6 tailpiece is intentionally designed such that the tailpiece cannot be installed at the same time as the cylinder.  Interchangeable cylinders assume that the lever and taipiece is in...
See the JD Yale Lever installation instruction HERE
See Falcon MA lever assembly below: The spring mechanism (E) returns the lever to horizontal.  The parts are not sold separate, so if the lever sags, the entire lever assembly shoul...
Lever assemblies part numbers are found in the Pricebook.  Note they are handed.
  Issue: One or both levers don't stay horizontal and droop down.   Facts: Falcon T series locks in a high use application.   Cause: Weak or broken springs within t...
Levers may sag due to an incorrectly installed springcage or an incorrect springcage.Mortise locks with a fixed (rigid) lever such as an L9080 will use a spacer on the rigid lever (outside) and a s...
As of June 2019, all ND, NDe, AD CYL and CO CYL levers are the same.
Between January 30, 2017  June of 2019, the AD and CO cylindrical lock levers were incompatible because of the ND / NDe lever and spring cage design change in January of 2017.Prior to January ...
To convert a Schlage mortise L9080 function to a L9070 function purchase and replace the following:   L283-133, L9070 lock case  L283-040, spring cage (for outside lever)
Cylindrical Locks: a bored lockset whose latch or bolt locking mechanism is contained in the portion installed through the cross-bore Medium, high to extra heavy duty Commercial, multi-family a...
AL-Series and discontinued D Lever-Series locks use castle nuts to hold the chassis to the spring cages and to keep the chassis positioned in the door. This causes confusion at times when the lock ...
The 38-075 was a spring cage retrofit kit used on the old D series locks manufactured prior to October 1994.  Kits contained 2 each spring cages, 2 each roses, 2 each mounting screws.
To convert the AL44 to an AL40 you can replace the outside plunger unit in the chassis or order the AL40 chassis.  Replacing the plunger unit is more difficult and time consuming and would not be r...
On August 15, 2012 Schlage began shipping ND-Series locks with a hassle free clip to aid with the installation of the anti-rotation plate.  This feature has been added to the hub to keep the anti-r...
Conversion kits are available to convert many popular functions.Conversion kits manufactured on or after January 30, 2017 will have the new enhanced ND spring cage, lever, plunger and buttonCo...
For all available ND Series Conversion Kit part numbers, click here.