Repair workspace

Bowden Coupler Slipping or PTFE Tube Pulling Out

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Replace worn coupler teeth or damaged PTFE, fully seat the tube against the internal stop, install the locking clip, and remove excessive feed resistance.

Extrusion & Feed PathEasy11 min

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Ordered repair sequence

Step 1

Unload filament and cool the hotend.

Step 2

Remove the tube using the correct collar procedure.

Step 3

Cut the tube end square with a sharp PTFE cutter if permitted.

Step 4

Inspect the coupler and replace it if teeth are worn or uneven.

Step 5

Seat the tube fully against the internal stop while the hotend is prepared according to the manufacturer method.

Step 6

Install the retaining clip.

Step 7

Check spool drag, bends, sensor path, and retraction values.

Step 8

Mark the tube and run a retraction test to confirm it no longer moves.

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