Mazda MX-5 NA silhouetteMX-5 NA

ASSEMBLY

B-76prose procedure

Timing Belt (continued)

  1. 3
    Install the timing belt so that there is no looseness at the idler side or between the two camshaft pulleys.
    Caution: Do not turn the crankshaft counterclockwise.
    Timing belt installed around both camshaft pulleys and over the idler/tensioner. Label 'IDLER' identifies the idler pulley on the right side.
    05U0BX-030
  2. 4
    Turn the crankshaft two turns clockwise, and align the timing belt pulley mark with the timing mark.
  3. 5
    Verify that the camshaft pulley marks are aligned with the seal plate marks. If not aligned, remove the timing belt and repeat from tensioner installation.
  4. 6
    Turn the crankshaft 1 and 5/6 turn clockwise, and align the timing belt pulley mark with the tension set mark.
    Crankshaft timing belt pulley rotated approximately 60° to the tension set mark. Labels 'APPROX. 60°' with arrow indicate rotation, and 'TENSION SET MARK' points to the alignment mark.
    05U0BX-031
  5. 7
    Loosen the tensioner lock bolt to apply tension to the timing belt.
    Tensioner with label 'TENSIONER LOCK BOLT' pointing to the lock bolt that must be loosened to apply tension to the belt.
    05U0BX-032
  6. 8
    Tighten the tensioner lock bolt.
  7. 9
    Turn the crankshaft 2 and 1/6 turns clockwise and verify that the timing marks are correctly aligned.
  8. 10
    Measure the timing belt deflection by applying moderate pressure (98 N, 10 kg, 22 lb) midway between the two camshaft pulleys. If the deflection is not correct, repeat from Step 7 above.
    Both camshaft pulleys with the timing belt installed. Label 'DEFLECTION CHECKING POINT' with downward arrow indicates the midway point between the two camshaft pulleys where deflection is measured.
    05U0BX-033
Tightening torque (tensioner lock bolt)
37 - 52N·m
Timing belt deflection
9.0—11.5 mm (0.35—0.45 in) at 98 N (10 kg, 22 lb)

Timing Belt Cover

  1. 1
    Install the lower, middle, and upper covers.
    Lower, middle, and upper timing belt covers installed on the engine.
    05U0BX-231
Tightening torque (timing belt cover bolts)
7.8 - 11N·m

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