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Home >> Lincoln >> 2014 >> MKS EcoBoost >> Repair and Diagnosis >> External Pages >> Different car >> Section 1658 (Parking Brake System - Parking Brake & Actuation) >> Diagnosis And Testing >> Parking Brake >> Pinpoint Tests >> Pinpoint Test B: The Parking Brake Will Not Release >> Pinpoint Test B: The Parking Brake Will Not Release

Pinpoint Test B: The Parking Brake Will Not Release

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK THE PARKING BRAKE CONTROL 
    • Press the parking brake control pedal.
    • Does the parking brake control move? 
    • Yes:  GO to  B3.
    • No:  GO to B2  .
  2. B2 ISOLATE THE PARKING BRAKE CONTROL 
    • Release the parking brake cable tension at the parking brake control adjusting nut.
    • Disconnect the parking brake cable at the parking brake lever.
    • Press the parking brake control pedal.
    • Does the parking brake control move? 
    • Yes:  GO to B3  .
    • No:  INSTALL a new parking brake control. REFER to PARKING BRAKE CONTROL . TEST the system for normal operation.
  3. B3 ISOLATE THE FRONT PARKING BRAKE CABLE 
    • Disconnect the return spring from the equalizer.
    • If necessary, relieve the tension in the parking brake cable by loosening the equalizer adjustment nut until the rear cables can be disconnected from the equalizer.
    • Disconnect the LH and RH cables from the equalizer.
    • Verify that the front cable can slide freely in the conduit.
    • Does the cable slide freely in the conduit? 
  4. B4 ISOLATE THE REAR PARKING BRAKE CABLES 
    • Remove the rear parking brake cable-tosupport plate bolts and disconnect the rear parking brake cables from their actuators.
      • To install, tighten the bolts to 23 Nm (17 lb-ft).
    • While holding the cable conduit, attempt to slide the LH and the RH cables inside their conduits.
    • Do the cables slide freely inside their conduits? 
  5. B5 ISOLATE THE PARKING BRAKE SHOE ACTUATORS 
    • Remove the LH and RH parking brake shoes. Refer to PARKING BRAKE SHOES .
    • Attempt to move the LH and RH parking brake shoe actuators by hand.
    • Do the actuators move? 
    • Yes:  INSTALL new parking brake shoes. REFER to PARKING BRAKE SHOES . TEST the system for normal operation.
    • No:  INSTALL new parking brake shoe actuator(s). REFER to Brake Caliper Support Plate in REAR DISC BRAKE . TEST the system for normal operation.
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