Land Rover 2000-05

Modulator Valve

Print

Removal & Installation




NOTE
You will need a T4 or equivalent device to bleed the ABS system after removing the modulator.

  1. Remove the engine acoustic cover if equipped.
  2.  
  3. Release and remove the air intake hose.
  4.  
  5. Release the clip securing the harness and intake duct to body.
  6.  
  7. Lift the duct from the body, release clip from washer reservoir filler hose.
  8.  
  9. Release and remove air intake duct.
  10.  
  11. Unfasten the 2 bolts securing PAS oil cooler pipes.
  12.  
  13. Release PAS reservoir from mounting bracket and position aside.
  14.  
  15. Release catch and disconnect ABS modulator multiplug.
  16.  
  17. Position a rag under modulator to catch any spilled fluid.
    WARNING
    Brake fluid will damage paint finished surfaces. If spilled, immediately wipe the fluid off and thoroughly flush the area with clean water.

  18.  
  19. Tag and disconnect the 2 inlet brake pipes unions from ABS modulator. Plug or cap the lines and ports to prevent debris from entering the system.
  20.  
  21. Tag and disconnect the 4 outlet brake pipes unions from ABS modulator. Plug or cap the lines and ports to prevent debris from entering the system.
    WARNING
    Always plug or cap open connections to prevent contamination.

  22.  
  23. Remove 3 bolts securing ABS modulator to mounting bracket.
  24.  
  25. Release and remove ABS modulator from mounting bracket.
  26.  

To install:

  1. Position the modulator to mounting bracket, then install the bolts and tighten to 7 ft. lbs. (9 Nm).
  2.  
  3. Clean the brake pipe unions.
  4.  
  5. Connect the brake pipe unions to modulator ensuring pipes are connected to their correct ports. Tighten the unions to 12 ft. lbs. (17 Nm).
  6.  
  7. Connect ABS modulator multiplug and secure catch.
  8.  
  9. Position the air intake duct to body.
  10.  
  11. Secure the intake duct to washer bottle filler neck and harness clip.
  12.  
  13. Install the air intake hose.
  14.  
  15. Position the PAS reservoir to mounting bracket. Install the bolts securing PAS oil cooler pipes and tighten to 7.5 ft. lbs. (10 Nm).
  16.  
  17. Install the engine acoustic cover if equipped.
  18.  
  19. Bleed the brake system, as outlined in this section. To ensure correct operation, the ABS system MUST be tested using a T4, or equivalent testing equipment.
  20.  


NOTE
You will need a T4 or equivalent device to bleed the ABS system after removing the modulator.

  1. Position a rag under modulator to absorb any brake fluid that may spill.
    WARNING
    Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded. Also, do not allow any brake fluid to come in contact with a painted surface; it will damage the paint.

  2.  
  3. Detach the 3 connectors from ABS modulator.
    WARNING
    Always fit plugs or cap the open connections to prevent contamination.

  4.  
  5. Disconnect 2 inlet brake pipe unions from pump side of modulator. Plug or cap the lines and openings.
  6.  
  7. Disconnect 4 outlet brake pipe unions from top of modulator. Plug or cap the lines an openings.
  8.  
  9. Loosen 3 nuts securing modulator to mounting bracket.
  10.  
  11. Release and remove modulator from mounting bracket.
  12.  
  13. Remove 3 mounting rubbers from modulator.

    Click image to see an enlarged view

    Fig. Exploded view of the ABS modulator-connectors (2), inlet pipes (3), outlet pipes (4) and mounting nuts (5)

  14.  

To install:

  1. Position mounting rubbers to modulator.
  2.  
  3. Position modulator to mounting bracket, tighten the nuts to 7 ft. lbs. (9 Nm).
  4.  
  5. Clean brake pipe unions.
  6.  
  7. Connect brake pipe unions to modulator ensuring pipes are connected to their correct ports. Tighten the 13mm unions to 16 ft. lbs. (22 Nm) and the 11mm unions to 10 ft. lbs. (14 Nm).
  8.  
  9. Attach the electrical connectors to the modulator.
  10.  
  11. Bleed the brake system, as outlined in this section. To ensure correct operation, the ABS system MUST be tested using a T4, or equivalent testing equipment.
  12.  


NOTE
You will need a T4 or equivalent device to bleed the ABS system after removing the modulator.

  1. Release the catch and disconnect ABS modulator multiplug.
  2.  
  3. Disconnect the multiplug from sensor.
  4.  
  5. Position a rag under the modulator to absorb fluid spillage.
    WARNING
    Brake fluid will damage paint finished surfaces. If spilled, immediately wipe the fluid off and thoroughly flush the area with clean water.

  6.  
  7. Note their installed positions, then disconnect 6 brake pipe unions from modulator. Plug or cap the lines and ports to prevent contaminants from entering the system.

    Click image to see an enlarged view

    Fig. Note their installed positions, then disconnect 6 brake pipe unions from modulator. Plug or cap the lines and ports to prevent contaminants from entering the system

  8.  
  9. Remove the bolt securing ABS modulator to mounting bracket.
  10.  
  11. Release and remove the ABS modulator from mounting bracket.
  12.  
  13. If replacing the modulator, remove 2 bolts securing mounting bracket to modulator and remove bracket.
  14.  

To install:

  1. If the modulator was replaced, position mounting bracket to modulator, fit bolts and tighten to 6 ft. lbs. (8 Nm).
  2.  
  3. Position modulator to mounting bracket, fit bolt and tighten to 6 ft. lbs. (8 Nm).
  4.  
  5. Clean brake pipe unions.
  6.  
  7. Connect brake pipe unions to ABS modulator ensuring pipes are connected to their correct ports.
  8.  
  9. Tighten ABS modulator brake pipe unions to 13 ft. lbs. (18 Nm).
  10.  
  11. Connect multiplug to sensor.
  12.  
  13. Connect ABS modulator multiplug and secure catch.
  14.  
  15. Bleed the brake system, as outlined in this section. To ensure correct operation, the ABS system MUST be tested using a T4, or equivalent testing equipment.
  16.  

 
label.common.footer.alt.autozoneLogo