GU ALU-JET 06 scissor set for GU MZ systems – identification of the original scissor arms
In aluminum tilt-and-slide systems with a GU MZ mechanism, the scissor arms are a crucial part of the complete PSK system. After years of use, wear often occurs in these parts, causing the sliding door to become harder to operate or no longer close properly.
The original GU ALU-JET 06 scissor set is only applicable to GU systems.
Original GU scissor set part numbers
The following GU manufacturing numbers apply to the complete GU ALU-JET 06 scissor sets:
✔ Left (DIN L): K-20431-00-L-8
✔ Right (DIN R): K-20431-00-R-8
These sets are suitable for GU MZ PSK systems for aluminum tilt-and-slide doors.
Identification of the scissor arms
The scissor arms themselves often have production stamps or identification codes.
The following markings frequently appear on this version:
✔ Left: 38743 LS
✔ Right: 38743 RS
These codes are usually located on the folding scissor arms at the top of the mechanism.
The designations mean:
✔ LS = Left
✔ RS = Right
These identification codes help in recognizing the correct version of the GU ALU-JET 06 mechanism.
How does the GU ALU-JET 06 system work?
The GU ALU-JET 06 system is a PSK system.
PSK means:
✔ Parallel-Schiebe-Kipp-Beschlag
✔ Parallel Tilt-and-Slide Hardware
When operating the handle:
✔ the mechanism unlocks
✔ the scissor arms fold outward
✔ the door moves inward in a controlled manner
✔ the panel can slide along the rail
✔ the door then closes tightly against the seals again
The scissor arms play an essential role in guiding and stabilizing the door.
Composition of the scissor set
The GU ALU-JET 06 scissor set consists of:
✔ 2 upper corners with folding scissor arms
✔ 1 lower corner
✔ 2 parts for the tilt position
✔ connections to the locking rods
✔ couplings to the GU MZ mechanism
This system is specifically developed for GU aluminum PSK systems and is not universally applicable.
Common wear problems
Older GU PSK systems often experience problems such as:
✔ The handle operates stiffly
✔ The door no longer tilts
✔ The scissor arms jam
✔ The sliding panel enters crookedly
✔ The door slides with difficulty
✔ Locking no longer works properly
✔ The door no longer closes tightly against the seals
✔ Creaking or grinding noises during operation
Wear especially in the hinge points and moving connections often causes malfunctions.
The problem is often not in the handle
Many people think the handle or cylinder is defective when the sliding door no longer locks properly.
But in GU ALU-JET 06 systems, the problem is often in the mechanism itself.
When the scissor arms no longer fully reach their position:
✔ the door does not close completely
✔ the locking does not work properly
As a result, it seems as if the handle is defective, while the problem actually lies in the PSK mechanism.
Specialist in GU ALU-JET 06 parts
Van Doorn Opening Technologies specializes in original GU parts for aluminum PSK sliding doors.
We assist customers daily with:
✔ identification of GU parts
✔ overhaul of GU MZ systems
✔ replacement of scissor sets
✔ supply of original GU parts
✔ technical support for malfunctions
For proper identification, we kindly request:
✔ photo of the scissor arms
✔ photo of the top of the door
✔ photo of the lower corner
✔ photo of the complete mechanism
✔ photo of any codes such as 38743 LS or 38743 RS
