Dormakaba L1000 Series Mechanical Lever Lock Parts

The dormakaba Simplex L1000 Series is a fully mechanical pushbutton cylindrical lever lock that requires no batteries, no wiring, and no power supply of any kind. It provides combination-controlled exterior access while keeping the interior lever always free for egress. When an L1000 lock needs a lever assembly replacement, a drive sleeve swap, a clutch rebuild, or a conversion to a different key override cylinder brand, the correct replacement requires a genuine dormakaba L1000 part number matched to both the door hand and the key override cylinder type installed. American Locksets stocks the full dormakaba L1000 Series spare parts catalog as an authorized dormakaba dealer, with same-day shipping and free shipping on all orders over $300.

Dormakaba L1000 Series Parts: What the Simplex Lever Lock Contains and What Fails

The Simplex L1000 is built around a heavy-duty cylindrical lock housing with a cast front housing, unified trim plate, and fixed ADA-compliant levers. It installs on wood or metal doors using ASA 161 door preparation with additional through bore holes, accommodating door thicknesses from 1-3/8 inch to 2-1/4 inch. The lock carries a 3-hour UL/ULC fire rating for A-labeled doors, is D.O.D. Compliant 5220.22M, and is weather resistant for exterior use.

The mechanical mechanism operates through a combination of the drive shaft assembly, the outside drive sleeve, the clutch assembly, and the inside drive sleeve working together to transmit pushbutton inputs into latch retraction. The key override path adds an additional mechanical channel through the cylinder-specific conversion assembly and outside lever assembly. Each of these is a serviceable component with a specific dormakaba part number tied to the door hand and the key override cylinder brand. Getting the hand wrong or ordering a BEST lever assembly when the lock is fitted with a Schlage core produces a non-functional assembly.

Front Lock Housing and Core Structural Parts

The Dormakaba 201700-26D-01 Simplex Front Lock Housing, Satin Chrome is the cast front housing of the L1000 lock. When the housing is cracked, damaged by impact, or corroded beyond cleaning, this is the replacement. It is finish-specific: 26D Satin Chrome. Other finishes require different part numbers.

Outside Lever Handle Assemblies: Non-Key Override Versions

For L1000 models without a key override cylinder, the outside lever handle assembly is the component that transmits pushbutton combination input to the drive mechanism. These are handed and not interchangeable between right-hand and left-hand installations.

• Dormakaba 201770 Outside Lever Handle Assembly, Non Key Override, Right Handed

• Dormakaba 201771 Outside Lever Handle Assembly, Non Key Override, Left Handed

Outside Lever Assemblies by Key Override Cylinder Brand

When the L1000 is fitted with a key override cylinder, the outside lever assembly is cylinder-brand specific. The lever assembly integrates the cylinder housing geometry into the lever body, which means a Schlage lever assembly physically differs from a Sargent lever assembly or a BEST lever assembly. Confirm the installed cylinder brand before ordering.

• Dormakaba 201790 BEST Outside Lever Assembly, RH and 201791 LH: For BEST/Falcon/Arrow/Eagle/KSP/Lloyd Matheson cylinders.

• Dormakaba 201829 Schlage Outside Lever Assembly, RH and 201830-26D LH: For Schlage cylinders.

• Dormakaba 201925 Sargent Outside Lever Assembly, RH and 201926 LH: For Sargent cylinders.

• Dormakaba 201927 Medeco/ASSA/Yale Outside Lever Assembly, RH and 201928 LH: For Medeco, ASSA, and Yale cylinders.

• Dormakaba 201929 Corbin Russwin Outside Lever Assembly, RH and 201930 LH: For Corbin Russwin cylinders.

Drive Sleeve Assemblies

Outside drive sleeve assemblies are also cylinder-brand specific on key override models. The drive sleeve transmits rotational force from the key cylinder to the latch mechanism.

• Dormakaba 201772-000-01 Outside Drive Sleeve Assembly, Non Key Override

• Dormakaba 201792-000-01 BEST Outside Drive Sleeve Assembly

• Dormakaba 201831-000-01 Sargent Outside Drive Sleeve Assembly

• Dormakaba 201840-000-01 Schlage Outside Drive Sleeve Assembly

• Dormakaba 201782-000-01 Inside Drive Sleeve Assembly

Drive Shaft Assemblies

The drive shaft assembly connects the pushbutton mechanism to the drive sleeve. Two versions exist depending on whether the L1000 has a key override.

• Dormakaba 201812-000-01 Drive Shaft Assembly for Non Key Override

• Dormakaba 201813-000-01 Drive Shaft Assembly for Key Override

Clutch Assemblies and Inside Lever Kits

The clutch assembly is a wear item in high-cycle L1000 installations. The inside lever kit covers the full interior lever mechanism replacement.

• Dormakaba 201788 Clutch Assembly, RH and 201789 LH

• Dormakaba 201785 Inside Lever Kit, RH and 201786 LH

Conversion Assemblies: Retrofitting to a Different Cylinder Brand

Conversion assemblies allow an existing L1000 installation to be reconfigured to accept a different key override cylinder brand. This is the correct ordering path when a building is upgrading its key system to a different manufacturer's cylinders and needs the L1000 lever lock to accept the new cylinder format.

• Dormakaba 201845 Schlage Conversion Assembly (S), RH and 201846 LH

• Dormakaba 201931 Sargent Conversion Assembly (R), RH and 201932 LH

• Dormakaba 201933 Medeco/ASSA/Yale Conversion Assembly, RH and 201934 LH

• Dormakaba 201935 BEST/Falcon/Arrow/Eagle Conversion Assembly (B), RH and 201936 LH

• Dormakaba 201937-26D-01 Corbin Russwin Conversion Assembly, RH, Satin Chrome and 201938-26D-01 LH

Browse the full Simplex L1000 Series Lever Lock complete units, all Simplex Accessories, and the complete Dormakaba hardware catalog at American Locksets. 

Frequently Asked Questions 

Q: What are dormakaba L1000 series parts? 

They are genuine replacement components for the dormakaba Simplex L1000 mechanical pushbutton lever lock, including lever assemblies, drive sleeves, clutch assemblies, drive shafts, and cylinder brand conversion kits.

Q: Why do L1000 outside lever assemblies differ by cylinder brand? 

Each key override cylinder manufacturer uses a different physical cylinder format. The outside lever assembly must match the cylinder brand because the cylinder housing geometry is built into the lever body itself.

Q: How do I know if I need a key override or non-key override L1000 part? 

Check whether your installed L1000 has a key cylinder visible on the outside lever. If it does, you need the key override version of the drive shaft and outside lever assembly.

Q: What is a conversion assembly for the Simplex L1000?

 A conversion assembly allows an existing L1000 to be reconfigured for a different key override cylinder brand, for example switching from Schlage to Sargent without replacing the entire lock.

Q: Are Simplex L1000 parts handed? 

Yes. Outside lever assemblies, inside lever kits, and clutch assemblies are all available in right-hand and left-hand versions. Confirm the door hand before ordering.

Q: Can I get Simplex L1000 parts for Corbin Russwin, Sargent, and Schlage cylinder overrides? 

Yes. American Locksets stocks outside lever assemblies, drive sleeve assemblies, and conversion assemblies for Schlage, Sargent, Corbin Russwin, BEST/Falcon/Arrow, and Medeco/ASSA/Yale cylinder formats.