Aspen 2007, Durango 2005-2007

Hydraulic Control Module

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The Hydraulic Control Unit (HCU) consists of a valve body, pump motor, low pressure accumulators, inlet valves, outlet valves and noise attenuators.

Removal & Installation



  1. Disconnect the battery cables from the battery.
  2.  
  3. Disconnect the brake lines to the HCU.
  4.  
  5. Disconnect the electrical harness connector.
  6.  
  7. Remove HCU assembly mounting nuts.
  8.  
  9. Raise and support the vehicle.
  10.  
  11. Remove the left front tire.
    NOTE
    Careful not to lose the mounting pins when remove the HCU from the vehicle.

  12.  
  13. Lift the HCU assembly off the mounting bracket.
  14.  
  15. Remove the HCU assembly through the left wheel well.

    Click image to see an enlarged view

    Fig. Remove brake lines (1) from HCU (2)



    Click image to see an enlarged view

    Fig. Location of ABM (Anti-Lock Brake Module) connector (2) at HCU (1)



    Click image to see an enlarged view

    Fig. Removal of HCU (2) through access hole in wheel well (1)

  16.  

To install:


NOTE
If the Anti-Lock Brake Module (ABM) is being replaced with a new ABM it must be reprogrammed with the use of a scan tool.

  1. Reinstall the HCU assembly through the left wheel well.
  2.  
  3. Install HCU assembly on the mounting bracket and Tighten the nuts to 11 ft. lbs. (15 Nm).
  4.  
  5. Install the brake lines to the HCU and tighten to 19 Nm (170 inch lbs.).
  6.  
  7. Install the brake lines to the HCU and tighten to 19 Nm (170 inch lbs.).
  8.  
  9. Install the electrical harness connector to the HCU/ABM assembly.
  10.  
  11. Install the left front tire.
  12.  
  13. Install the battery cables to the battery.
  14.  
  15. Bleed ABS brake system.
  16.  

 
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