Step 1: Preparation
Bike inner tube
Step 2: Prepare the work area
Ruff up the dustcover with the sandpaper.
Grease the joint as good as you can I just pushed the grease in there with my finger but you can use a syringe to.
Clean off all dust and grease from the outside with the rag and alcohol.
Step 3: Cut out the repair patch
sandpaper it and clean it with the alcohol
Step 4: Gluing
Now its time for the rubber solution.
Apply it to both the patch and the dustcover.
Wait for it to dry until sticky
Step 5: Apply the patch
gently massage it on not to much pressure we don't want the grease to leak out.