Mazda 323/626/929/GLC/MX-6/RX-7 1978-1989

Camshaft Sprocket (Pulley)

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REMOVAL & INSTALLATION



323 Non-Turbo and 1983-87 626-Except Diesel

See Figure 1

  1. Remove the timing belt, as previously described.
  2.  
  3. On the 1.6L engine, remove the cylinder head cover.
  4.  



Click image to see an enlarged view

Fig. Fig. 1: Hold a socket wrench and extension against the front housing bolt to keep the camshaft pulley from turning-1983-87 626 (except diesel)

  1. In order to hold the camshaft and pulley stationary while the lockbolt is turned, on the 1.6L engine, install an open-end wrench on the flats of the camshaft directly in front of the front bearing. On the 2.0L engine, insert a socket wrench with an extension through one of the holes in the camshaft sprocket and onto the top bolt for the front seal plate. (Do not turn this bolt; the wrench is simply to provide resistance which prevents the pulley from turning.)
  2.  
  3. Unfasten the lockbolt, then remove the pulley.
  4.  

To install:
  1. Properly position the pulley on the end of the camshaft. On the 1.6L engine, align the dowel pin and keyway, so that the pulley's matching mark points straight up; the timing marks on the camshaft pulley and cylinder head should also align. On the 2.0L engine, mark "A" on the camshaft pulley should be at the top, aligned with the mating mark on the front housing.
  2.  
  3. Torque the lockbolt to 36-45 ft. lbs. (49-61 Nm) on the 1.6L engine, or 35-48 ft. lbs. (47-65 Nm) on the 2.0L engine.
  4.  
  5. On the 1.6L engine, install the cylinder head cover with a new gasket.
  6.  
  7. Install the timing belt, as previously described.
  8.  

1988-89 323 Turbo

See Figure 2



Click image to see an enlarged view

Fig. Fig. 2: Timing mark alignment-1988-89 323 turbo

  1. Remove the timing belt covers and timing belt, as previously described.
  2.  
  3. Remove the cylinder head cover.
  4.  
  5. Engage the camshaft journal that is closest to the seal plate with an adjustable wrench to hold it stationary. Using a box wrench, loosen the camshaft pulley bolt. Remove the bolt and washer, then slide the camshaft pulley from the camshaft. (The other camshaft pulley is removed in exactly the same manner.)
  6.  

To install:
  1. Properly position the camshaft pulley on the end of the camshaft. Install the exhaust side camshaft pulley so that the E mark stamped on its face is aligned with the timing mark at the top of the seal plate. Similarly, install the intake side camshaft pulley so that the I mark stamped on its face is aligned with the timing mark at the top of the seal plate.
  2.  
  3. Insert and hand-start the pulley bolts and washers.
  4.  
  5. Hold the camshaft stationary, as described in Step 3, while torquing the bolt to 36-45 ft. lbs. (49-61 Nm). Repeat the torquing procedure for the other camshaft pulley.
  6.  
  7. Install the cylinder head cover with new gaskets and bolt seals.
  8.  
  9. Install the timing belt and timing belt covers, as previously described.
  10.  

 
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