Camshafts

Camshafts









Removal

Both sides

1. Remove the camshaft roller followers. For additional information, refer to Camshaft Roller Follower Camshaft Roller Follower.

2. Remove the nut and position the wiring harness bracket aside.

3. NOTE: Carry out the RH and LH camshaft timing procedure when either camshaft is serviced.

Rotate the crankshaft clockwise to position the No. 1 cylinder at Top Dead Center (TDC).

4. NOTICE: Do not rotate the engine counterclockwise. Rotating the engine counterclockwise will result in damage to the damper crankshaft sensor speed wheel and incorrect timing of the engine.

NOTE: The Crankshaft TDC Timing Tool must be installed on the damper and should contact the engine block. This positions the piston at TDC.

Install the Crankshaft TDC Timing Tool.





RH side

5. Remove the RH hydraulic timing chain tensioner.
- Discard the washer.

6. Install the Camshaft Sprocket Holding Tool and the Adapter for 303-564 on the rear of the RH cylinder head and tighten the top 2 clamp bolts to 10 Nm (89 lb-in).





7. NOTICE: The RH camshaft sprocket bolt is a LH-threaded bolt. Turning the bolt in the wrong direction can damage the bolt.

Using the Torque Wrench Extension and the Camshaft Sprocket Nut Socket, loosen the camshaft sprocket bolt.





8. Remove the bolt and position the camshaft sprocket aside.

LH side

9. Remove the LH hydraulic timing chain tensioner.
- Discard the washer.

10. Rotate the accessory drive belt tensioner counterclockwise and detach the accessory drive belt from the A/C compressor and power steering pump pulleys.





11. Remove the bolts and position the A/C compressor and power steering pump bracket aside.

12. Install the Camshaft Sprocket Holding Tool and the Adapter for 303-564 on the front of the LH camshaft and tighten the 2 top clamp bolts to 10 Nm (89 lb-in).





13. Remove the bolt and position the camshaft sprocket aside.

Both sides

14. NOTE: Mark the position of the camshaft bearing caps so they can be installed in their original positions.

Remove the 8 bolts for each set of camshaft bearing caps in the sequence shown and remove the camshaft bearing caps.





15. Remove the camshaft.

Installation

NOTE: Lubricate the camshaft journal bearing surfaces on the cylinder head, the camshaft journals and the camshaft bearing caps with clean engine oil.

Both sides

1. Install the camshaft.

2. NOTE: The camshaft bearing caps must be installed in their original positions.

NOTE: After installing the bolts, check the camshaft for free rotation.

Position the camshaft bearing caps and the 8 bolts for each set of camshaft bearing caps.

- Tighten the bolts in the sequence shown in 2 stages.
- Stage 1: Tighten to 6 Nm (53 lb-in).

- Stage 2: Tighten to 16 Nm (142 lb-in).





RH side

3. NOTICE: The camshaft gear must turn freely on the camshaft. DO NOT tighten the bolt at this time. Tightening the bolt may result in incorrect engine timing.

NOTICE: The RH camshaft sprocket bolt is a LH-threaded bolt. Turning the bolt in the wrong direction can damage the bolt.

Install the camshaft sprocket and loosely install the bolt.

LH side

4. NOTICE: The camshaft gear must turn freely on the camshaft. DO NOT tighten the bolt at this time. Tightening the bolt may result in incorrect engine timing.

Install the camshaft sprocket and loosely install the bolt.

Both sides

5. Time the camshafts. For additional information, refer to Camshaft Timing Camshaft Timing.