Camshafts Timing - 4.0L

Remove the camshaft roller followers. See VALVE TAPPET REMOVAL / INSTALLATION - 4.0L  .

1. Turn the crankshaft clockwise to position the No. 1 cylinder at top dead center (TDC).
   Fig 1: Identifying Nut And A/C Hose

   Courtesy of MAZDA MOTORS CORP.
2. Remove the nut and position the A/C hose aside.
   Fig 2: Installing Crankshaft Timing Tool SST

   Courtesy of MAZDA MOTORS CORP.
   CAUTION:

   • Do not rotate the engine counterclockwise. Rotating the engine counterclockwise will result in incorrect timing of the engine.
   NOTE:

   • The crankshaft timing tool SST  must be installed on the damper and should contact the engine block, this positions the engine at TDC.
3. Install the crankshaft timing tool SST  .
   Fig 3: Installing Camshaft Sprocket Holding Tool SST And Adaptor SST To RH Cylinder Head

   Courtesy of MAZDA MOTORS CORP.
   NOTE:

   • Late build vehicles shown, early build vehicles similar.
4. Install the camshaft sprocket holding tool SST  and the adaptor SST  to the RH cylinder head and tighten the 2 top clamp bolts.

   Tightening Torque 

   10 Nm {1.0 kgf-m, 89 in-lbf} 

   Fig 4: Loosening RH Camshaft Sprocket Bolt

   Courtesy of MAZDA MOTORS CORP.
   CAUTION:

   • The RH camshaft sprocket bolt is a LH-threaded bolt.
5. Using the torque wrench extension SST  with the camshaft sprocket nut socket SST  (303-565), loosen the RH camshaft sprocket bolt.
   Fig 5: Loosening Special Tool Clamp Bolts

   Courtesy of MAZDA MOTORS CORP.
   NOTE:

   • Late build vehicles shown, early build vehicles similar.
6. Loosen the top 2 special tool clamp bolts.
   Fig 6: Installing Camshaft Holding Tool SST And Adaptor SST On Front Of RH Cylinder Head

   Courtesy of MAZDA MOTORS CORP.
   NOTE:

   • The camshaft timing slots are off-center.
7. Position the camshaft timing slots below the center-line of the camshaft to correctly fit the special tools and install the camshaft holding tool SST  and adaptor SST  on the front of the RH cylinder head.
   Fig 7: Identifying RH Lower Splash Shield

   Courtesy of MAZDA MOTORS CORP.
8. Remove the RH lower splash shield.
   Fig 8: Identifying RH Hydraulic Camshaft Tensioner

   Courtesy of MAZDA MOTORS CORP.
9. Remove the RH hydraulic camshaft tensioner.
   Fig 9: Installing Timing Chain Tensioner SST

   Courtesy of MAZDA MOTORS CORP.
10. Install the timing chain tensioner SST  .
    Fig 10: Identifying Camshaft Bolt

    Courtesy of MAZDA MOTORS CORP.
    CAUTION:

    • The RH camshaft sprocket bolt is a LH-threaded bolt.
11. Tighten the bolts.
    1. Tighten the special tool top 2 damp bolts to 10 Nm (89 lb-in).
    2. Using the torque wrench extension SST  with the camshaft sprocket nut socket SST  (303-565), tighten the camshaft bolt.

    Tightening Torque 

    61 Nm {6.2 kgf-m, 45 ft-lbf} 

    Fig 11: Removing Timing Chain Tensioner SST

    Courtesy of MAZDA MOTORS CORP.
12. Remove the timing chain tensioner SST  .
    Fig 12: Identifying RH Hydraulic Camshaft Tensioner

    Courtesy of MAZDA MOTORS CORP.
    NOTE:

    • Install a new O-ring seal on the tensioner and lubricate with clean engine oil.
13. Install the RH hydraulic camshaft tensioner.

    Tightening Torque 

    44 Nm {4.5 kgf-m, 32 ft-lbf} 

    Fig 13: Identifying RH Lower Splash Shield

    Courtesy of MAZDA MOTORS CORP.
14. Install the RH lower splash shield.
15. Remove the special tools from the RH cylinder head.
    Fig 14: Installing Camshaft Sprocket Holding Tool SST

    Courtesy of MAZDA MOTORS CORP.
16. Install the camshaft sprocket holding tool SST  and the adaptor SST  on the front of the LH cylinder head and tighten the top 2 clamp bolts.

    Tightening Torque 

    10 Nm {1.0 kgf-m, 89 in-lbf} 

    Fig 15: Loosening LH Camshaft Sprocket Bolt

    Courtesy of MAZDA MOTORS CORP.
17. Loosen the LH camshaft sprocket bolt.
    Fig 16: Loosening Clamp Bolts Of Camshaft Sprocket

    Courtesy of MAZDA MOTORS CORP.
18. Loosen the top 2 clamp bolts on the camshaft sprocket holding tool SST  to allow the camshaft sprocket to rotate freely.
    Fig 17: Installing Camshaft Holding Tool SST And Adaptor SST On Rear Of LH Cylinder Head

    Courtesy of MAZDA MOTORS CORP.
    NOTE:

    • The camshaft timing slots are off-center.
19. Position the camshaft timing slots below the center-line of the camshaft to correctly fit the special tools and install the camshaft holding tool SST  and adaptor SST  on the rear of the LH cylinder head.
    Fig 18: Removing LH Hydraulic Camshaft Tensioner

    Courtesy of MAZDA MOTORS CORP.
20. Remove the LH hydraulic camshaft tensioner.
    Fig 19: Installing Timing Chain Tensioner SST

    Courtesy of MAZDA MOTORS CORP.
21. Install the timing chain tensioner SST  .
    Fig 20: Tightening LH Camshaft Bolt

    Courtesy of MAZDA MOTORS CORP.
22. Tighten the bolts.
    1. Tighten the special tool top 2 clamp bolts.

       Tightening Torque 

       10 Nm {1.0 kgfm, 89 in-lbf} 

    2. Tighten the LH camshaft bolt.

    Tightening Torque 

    85 Nm {8.7 kgf-m, 63 ft-lbf} 

    Fig 21: Removing Timing Chain Tensioner SST

    Courtesy of MAZDA MOTORS CORP.
23. Remove the timing chain tensioner SST  .
    Fig 22: Installing LH Hydraulic Camshaft Tensioner

    Courtesy of MAZDA MOTORS CORP.
    NOTE:

    • Install a new O-ring seal on the tensioner and lubricate with clean engine oil.
24. Install the LH hydraulic camshaft tensioner.

    Tightening Torque 

    44 Nm {4.5 kgf-m, 32 ft-lbf} 

    1. Tighten to 44 Nm (32 lb-ft).
25. Remove the special tools from the LH cylinder head.
    Fig 23: Removing Crankshaft Timing Tool

    Courtesy of MAZDA MOTORS CORP.
26. Remove the crankshaft timing tool SST  .
    Fig 24: Installing A/C Hose

    Courtesy of MAZDA MOTORS CORP.
27. Position the A/C hose and install the nut.

    Tightening Torque 

    20 Nm {2.0 kgf-m, 15 ft-lbf} 

28. Install the camshaft roller followers. See VALVE TAPPET REMOVAL / INSTALLATION - 4.0L  .