Removal Note

Both sides

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

RH side

Remove the RH hydraulic chain tensioner.

Fig 1: Removing/Installing Camshaft Sprocket
Courtesy of MAZDA MOTORS CORP.
NOTE:
- Late build shown, early build similar.
Install the camshaft sprocket holding tool SST and the adaptor SST on the rear of the RH cylinder head.
Tightening Torque

10 Nm {1.0 kgf-m, 89 in-lbf}

Fig 2: Identifying Camshaft Sprocket Bolt
Courtesy of MAZDA MOTORS CORP.
CAUTION:
- The RH camshaft sprocket is a LH-threaded bolt.
Using the torque wrench extension SST and the camshaft sprocket nut socket, loosen the camshaft sprocket bolt.

Fig 3: Removing Camshaft Sprocket
Courtesy of MAZDA MOTORS CORP.
Remove the bolt and position the camshaft sprocket aside.

LH side

Remove the LH hydraulic chain tensioner.

Fig 4: Installing Camshaft Sprocket Holding Tool SST And Adaptor SST On Front Of LH Camshaft
Courtesy of MAZDA MOTORS CORP.
Install the camshaft sprocket holding tool SST and the adaptor SST on the front of the LH camshaft and tighten the 2 top clamp bolts to 10 Nm (89 lb-in).

Fig 5: Identifying Bolt
Courtesy of MAZDA MOTORS CORP.
Loosen the bolt.

Fig 6: Identifying Camshaft Sprocket
Courtesy of MAZDA MOTORS CORP.
Remove the bolt and position the camshaft sprocket aside.
Both sides

Fig 7: Identifying Camshaft Bearing Cap Bolts Removal Sequence
Courtesy of MAZDA MOTORS CORP.
NOTE:
- Mark the position of the camshaft bearing caps so they can be installed in their original positions.
NOTE:
- Late build shown, early build similar.
Remove the bolts in the sequence shown and remove the camshaft bearing caps and, if equipped, the oil supply tube.
Remove the camshaft.