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Home >> Jaguar >> 2010 >> XFR >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Brake System - General Information -- XF/X250) >> Brake System - General Information >> Diagnosis And Testing >> Brake System >> Pinpoint Tests >> Pinpoint Test I: Brakes Drag

Pinpoint Test I: Brakes Drag

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 Jaguar XFR-S, 2015 Jaguar XFR, 2015 Jaguar XF, 2014 Jaguar XFR-S, and 2014 Jaguar XFR. However, it is still accessible from the selected car via links, so may be relevant.

TEST CONDITIONS 

DETAILS/RESULTS/ACTIONS 

  1. I1: ROAD TEST VEHICLE 
    1. Road test the vehicle and apply the brakes.

    Are the brakes functioning correctly?

    • Yes  : No action required, vehicle is OK.
    • No  : GO to   I2 . 
  2. I2: CHECK BRAKE CALIPERS 
    1. Check the front and rear calipers pistons and pins for binding, leaking or sticking.

    Do the disc brake caliper pistons and pins bind, leak or stick?

    • Yes  : Inspect the brake calipers and parking brake cables. Install new components as required. Re-test the system for normal operation.
    • No  : GO to   I3 . 
  3. I3: CHECK BRAKE BOOSTER 
    1. Check the brake booster connecting rod alignment and travel.

    Is the connecting rod OK?

    • Yes  : Vehicle is OK.
    • No  : Install a new brake booster as required. Refer To: Brake Booster (Power Brake Actuation, Removal and Installation). Retest the system for normal operation.
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