HLA Installation Note

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

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.
  
  Fig 1: Pressing Check Ball Using Round Bar
  Courtesy 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.
Visually inspect the HLA surface where it contacts the rocker arm for wear or damage.

Fig 2: HLA Surface Rocker Arm Contacts Damage Surface Location
Courtesy of MAZDA MOTORS CORP.
- If there is any malfunction, replace the HLA.
Assemble the HLAs to their original positions.