Pinpoint Test A: The Parking Brake Does Not Apply
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.
- A1 CHECK THE PARKING BRAKE CONTROL
- Press the parking brake control pedal.
- Does the parking brake control move?
- Yes: GO to A2 .
- No: GO to A3.
- A2 CHECK FOR BROKEN CABLES
- Remove the rear brake disc. Refer to REAR DISC BRAKE .
- Inspect the following items for damage and correct connections:
- Cable equalizer
- Front cable
- LH rear cable and return spring
- Parking brake control
- Parking brake shoe actuators
- RH rear cable and return spring
- Is any damage found or are any components disconnected?
NOTE: Have an assistant press and release the parking brake pedal to help isolate disconnected cables or cables that do not move.- Yes: CONNECT the component(s) or INSTALL new parking brake component(s) as necessary. TEST the system for normal operation.
- No: INSTALL new parking brake shoes. REFER to PARKING BRAKE SHOES . TEST the system for normal operation.
- A3 ISOLATE THE PARKING BRAKE CONTROL AND FRONT PARKING BRAKE CABLE
- Disconnect the return spring from the equalizer.
- 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 both rear cables from the equalizer.
- Press the parking brake control pedal.
- Does the parking brake control pedal move?
- Yes: GO to A4 .
- No: GO to A6.
- A4 ISOLATE THE REAR PARKING BRAKE CABLES
- Remove the rear parking brake cable-to-support 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?
- Yes: GO to A5 .
- No: INSTALL new rear brake cable(s). REFER to PARKING BRAKE CABLE - REAR, LH and/or PARKING BRAKE CABLE - REAR, RH . TEST the system for normal operation.
- Remove the rear parking brake cable-to-support plate bolts and disconnect the rear parking brake cables from their actuators.
- A5 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.
- Remove the LH and RH parking brake shoes.
- A6 ISOLATE THE FRONT PARKING BRAKE CABLE
- Remove the parking brake control adjustment nut and remove the front parking brake cable from the parking brake control.
- Attempt to slide the front parking brake cable inside the conduit.
- Does the cable slide freely inside the conduit?
- Yes: INSTALL a new parking brake control. REFER to PARKING BRAKE CONTROL . TEST the system for normal operation.
- No: INSTALL a new front parking brake cable. REFER to PARKING BRAKE CABLE - FRONT . TEST the system for normal operation.