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Home >> Mazda >> 2024 >> CX-30 Preferred >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Mechanical System (VIN Y)) >> Hydraulic Lash Adjuster (HLA) Removal/Installation (VIN Y) >> HLA Installation Note

HLA Installation Note

WARNING: This page is about a different variant/trim than selected.
  1. Perform HLA air bleeding using the following procedure.
    1. Put the HLA in a container filled with engine oil.
      CAUTION:
      • Do not insert the round bar firmly because the check ball spring force is extremely weak.
    2. While lightly pressing the check ball using a round bar (approx. 1.0 mm {0.039 in} diameter), bleed air by moving the plunger up and down.
      G16379659Courtesy of MAZDA MOTORS CORP.
    3. Press the end of the plunger in the oil and verify that there is no rebounding feel.
      • If rebounding feel cannot be eliminated, replace the HLA.
  2. Visually inspect the HLA surface where it contacts the rocker arm.
    G16379660Courtesy of MAZDA MOTORS CORP.
    • If there is any malfunction, replace the HLA.
  3. Assemble the HLAs to their original positions. (intake side)
  4. Apply engine oil to the HLAs surface where it contacts the rocker arms. (exhaust side)
  5. Assemble the HLAs using the following procedure: (exhaust side)
    1. Press the clip onto the rocker arm.
    2. Insert the HLA from the underside of the clip.
      G16379661Courtesy of MAZDA MOTORS CORP.
    3. Press the clip in the direction of the arrow and install it to the rocker arm.
      G16379662Courtesy of MAZDA MOTORS CORP.
    4. Verify that the tab of the clip is securely engaged to the rocker arm.
      G16379663Courtesy of MAZDA MOTORS CORP.
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