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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical (VIN A) (1 Of 6)) >> Cylinder Head Gasket Replacement [PYUL] >> Remove HLA (Hydraulic Lash Adjuster) >> HLA Installation Note

HLA Installation Note

WARNING: This page is about a different variant/trim than selected.
  1. Bleed the air from the HLA using the following procedure.
    1. Place the HLA into a container filled with engine oil.
    2. Move the plunger up and down to bleed the air while the check ball is lightly pressed with a thin round bar (diameter approx. 1.0 mm {0.039 in}).
      G16699718Courtesy of MAZDA MOTORS CORP.
      COMPONENT OPERATIONS

      Component no Refer to
      1 PRESS
      2 Up and down
      3 Container filled with engine oil
      4 Thin round bar
      5 Plunger
      6 Check ball
    3. Verify that the sense of sponginess is no longer present by pressing the end of the plunger in the oil.
      • If the sense of sponginess persists, replace the HLA.
  2. Visually inspect the HLA rocker arm contact surface for wear and damage.
    G16699719Courtesy of MAZDA MOTORS CORP.
    COMPONENT OPERATIONS

    Component no Refer to
    1 Rocker arm contact surface
    • If there is a malfunction, replace the HLA.
  3. Assemble the HLA to the same position as that before removal.
  4. Apply engine oil to the ends of the HLAs and valve stems.
G16699720Courtesy of MAZDA MOTORS CORP.
SYMBOL AND CONTENT DESCRIPTION

Symbol Content
Engine oil
1 HLA
2 Valve stem
3 Valve
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