Crossfire 2006-2008

Bleeding the ABS System

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WARNING
Do not spill brake fluid on any painted surface. Brake fluid can damage paint.

Use brake fluid approved to MB 331.0, such as Mopar part number 0454925AC, or a DOT 4 brake fluid with minimum dry boiling point of 500°F and minimum wet boiling point of 356°F.

Do not pump brake pedal at any time while bleeding. Air in the system will be compressed into small bubbles that are distributed throughout the hydraulic system. This will make additional bleeding operations necessary.

Do not allow the master cylinder to run out of fluid during bleeding operations. An empty cylinder will allow additional air to be drawn into the system. Check the cylinder fluid level frequently and add fluid as needed.

Manual Bleeding



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Bleed only one brake component at a time in the following sequence:

    Fill the master cylinder reservoir with brake fluid
     
    Open the caliper bleed screws and allow the brakes to gravity bleed
     
    Close each bleed screw as fluid starts to drip from it
     
    Top off master cylinder reservoir once more before proceeding
     
    Attach one end of the bleed hose to the bleed screw and insert the opposite end in a glass container partially filled with brake fluid
     
    Be sure the end of the bleed hose is immersed in the brake fluid
     
    Open up the bleeder screw, then have a helper press down on the brake pedal
     
    Once the pedal is down, close the bleeder screw
     
    Repeat bleeding until fluid stream is clear and free of bubbles, then move to the next wheel.
     

  4.  

Pressure Bleeding



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Follow the manufactures instructions carefully when using pressure equipment. DO NOT exceed the tank manufacturer's pressure recommendations. Generally, a tank pressure of 15-20 psi (51-67 kPa) is sufficient for bleeding.
  4.  
  5. Fill the bleeder tank with recommended brake fluid and purge air from the tank lines before bleeding.
  6.  
  7. Do not pressure bleed without a proper master cylinder adapter. The wrong adapter can lead to leakage, or drawing air back into the system. Use an adapter provided with the equipment.
    NOTE
    Follow the appropriate bleed procedure for the type of repair.



    Click image to see an enlarged view

    Fig. Submerse the brake bleeding hose (1) into a jar of clean brake fluid (2)

  8.  

Bleeding after master cylinder replacement

  1. Install the new master cylinder and brake fluid reservoir.
  2.  
  3. Connect the brake lines to the master cylinder connections.
  4.  
  5. Perform base brake system bleeding.
  6.  
  7. Calibrate the brake pressure sensor (if equipped) per diagnostic tool instructions.
  8.  

Bleeding after brake pressure sensor replacement

  1. Install the new brake pressure sensor.
  2.  
  3. Perform base brake system bleeding.
  4.  
  5. Calibrate the brake pressure sensor per diagnostic tool instructions.
  6.  

Bleeding after hydraulic control unit (HCU) replacement


NOTE
A new HCU is filled to capacity with brake fluid before shipping.


NOTE
This procedure must be begun before the removal of the defective HCU.

  1. Open the LF and RF brake caliper bleeder screws.
  2.  
  3. Apply the brake pedal and fix it with a pedal support.
  4.  
  5. Close the LF and RF brake caliper bleeder screws.
    NOTE
    Disconnect the master cylinder-side lines from the HCU first and plug the HCU on the HCU. Then disconnect the wheel-side lines from the HCU and plug the ports on the HCU.


    NOTE
    Connect the wheel-side lines to the HCU first, then remove the protective caps from the HCU and install the master cylinder-side lines.

  6.  
  7. Remove the defective HCU.
  8.  
  9. Install a new HCU.
  10.  
  11. Remove the pedal support.
  12.  
  13. Perform base brake system bleeding.
  14.  

Bleeding after brake caliper replacement


NOTE
This procedure must be begun before the removal of the defective caliper(s).

  1. Open the LF and RF brake caliper bleeder screws.
  2.  
  3. Apply the brake pedal and fix it with a pedal support.
  4.  
  5. Close the LF and RF brake caliper bleeder screws.
  6.  
  7. Remove the defective caliper and install a new one.
  8.  
  9. Remove the pedal support.
    NOTE
    Base brake system bleeding is only necessary for the caliper that was replaced.

  10.  
  11. Perform base brake system bleeding.
  12.  

 
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