Practical Execution Of Tests And Checks
WARNING: This page is about a different car, the 2019 Land Rover Range Rover Velar. However, it is still accessible from the selected car via links, so may be relevant.
Water test
NOTE:
Never aim a jet of water directly at a rubber seal.
- Carry out the water test with a second person present (in the passenger compartment).
- Use variable washer nozzles (concentrated water jet to fine spray mist).
- Start in the lower section and spray the whole area, working upwards in stages.
Washer test
- Further tests can be carried out in the washer system.
- Some leaks originate here, or only occur here.
- The relevant passenger compartment should be checked using a torch during the wash procedure.
Road test
- If no leaks are located during the tests above, road tests should be carried out on wet roads.
- Road tests under various conditions:
- At various speeds.
- On various road surfaces (asphalt to cobbles).
- With loaded or unloaded vehicle.
- Driving through puddles (splash water).
Chalk test (powder test)
- In this test, the clamping load and the bearing surface of the seal are checked.
- Performing the test:
- Dust the door seal with powder or coat with chalk.
- Coat the bearing surface of the seal with a thin film of Vaseline.
- Slowly close the door and open it again.
- Check the width and continuity of the imprint on the door seal.
Other test equipment
- Other equipment such as stethoscopes, UV lamps, special mirrors or ultrasound measuring instruments can be used to locate leaks.