Comline has issued a new technical bulletin

Comline has issued a new technical bulletin – designed to address a common fitment issue relating to brake discs with integrated ABS rings. These are prevalent on Citroën and Peugeot models.

Comline reported that its brake disc range includes many applications with factory-fitted ABS rings; however, technicians have occasionally reported issues with ABS sensor alignment during installation. These problems are not due to the discs themselves but are usually the result of corrosion around the ABS sensor mounting point.

This can push the sensor out of place; therefore, when a new disc is fitted, this closes the required ‘air gap’ between the ABS sensor and ABS ring – causing them to touch.

Warning signs and symptons

•  The ABS warning light will appear immediately after the brake disc is installed.
• The ABS sensor may damage the ABS ring on the new disc.

Comline’s recommended Solution

To ensure a correct installation, avoid damage or returns, Comline believes technicians should follow these steps:

• Remove the ABS sensor
• Clean any corrosion from the sensor mounting point or guide tube
• Inspect the sensor – replace if damaged
• Install the new brake disc, ensuring correct air gap between ABS sensor and ABS ring
• Test the ABS system to confirm correct operation

What’s in Comlines brake disc range

Comline’s brake disc range comprises more than 1,350 applications. The majority of these feature an anticorrosion coating and cover 90% of European, Japanese and Korean passenger cars and LCVs.

The coated brake discs undergo a nine-stage process: pre-degreasing, first and second ultrasonic degreasing, first and second water washing, drying, coating, baking and, finally, appearance checking.

The discs are rigorously tested – both in the manufacturing factory and within Comline’s own quality laboratory; for example, they undergo 240 hours of salt spray testing to demonstrate durability and coating corrosion resistance. Each disc is also checked for run-out, thickness variation and dynamic balance.