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Cylinder Head Installation Note

WARNING: This page is about a different variant/trim than selected.
  1. Inspect the length of the cylinder head bolt.
    • If it exceeded the limit value, replace the cylinder head bolt.
    G16699723Courtesy of MAZDA MOTORS CORP.
    SYMBOL AND CONTENT DESCRIPTION

    Symbol Content
    Standard:
    145.2-145.8 mm {5.717-5.740 in}
    Maximum:
    146.5 mm {5.768 in}
  2. When reusing cylinder head bolts, apply engine oil to one of the following:
    • Bolt seating surface
    • Cylinder head seating surface
  3. Completely remove any oil, dirt, and sealant adhering to the cylinder block.
    CAUTION:
    • Completely remove oil, dirt, and sealant adhering to the cylinder head gasket contacting surfaces. Otherwise, a sealing malfunction may occur.
  4. Apply silicone sealant (TB1217D) to the locations shown in the figure below.
    CAUTION:
    • Be aware of the following points, otherwise a sealing malfunction may occur due to hardening of the sealant.
      • Set the cylinder head on the cylinder block within 10 min after the silicone sealant is applied.
      • After setting the cylinder head, complete the bolt tightening immediately.
    G16699724Courtesy of MAZDA MOTORS CORP.
    SYMBOL AND CONTENT DESCRIPTION

    Symbol Content
    11-15 mm {0.44-0.59 in}
    2-6 mm {0.1-0.2 in}
    5-9 mm {0.2-0.3 in}
    TB1217D
    Application diameter: 5-10 mm {0.2-0.3 in}
  5. Install a new cylinder head gasket to the cylinder block.
  6. Apply silicone sealant (TB1217D) to the locations shown in the figure below.
    G16701745Courtesy of MAZDA MOTORS CORP.
    SYMBOL AND CONTENT DESCRIPTION

    Symbol Content
    1 Cylinder block
    11-15 mm {0.44-0.59 in}
    2-6 mm {0.1-0.2 in}
    5-9 mm {0.2-0.3 in}
    TB1217D
    Application diameter: 5-10 mm {0.2-0.3 in}
  7. Set the cylinder head on the cylinder block.
  8. Tighten the bolts in 4 steps in the order shown in the figure below.
Fig 1: Cylinder Head Bolts Tightening Sequence
G16699726Courtesy of MAZDA MOTORS CORP.
TIGHTENING TORQUE SPECIFICATIONS

Symbol Content
(1) (2)... Servicing procedure
15 N.m {1.55 kgf.m, 11.05 ft.lb}
+45 N.m {4.6 kgf.m, 33.2 ft.lb}
90°