For 1990-2009 cars

### Removal Procedure

1. Remove the camshaft cover. Refer to Valve Rocker Arm Cover Replacement .
2. Remove the timing belt. Refer to Timing Belt Replacement .

Important: Take extreme care to prevent any scratches, nicks or damage to the camshafts.

3. While holding the intake camshaft firmly in place, remove the intake camshaft gear bolt and gear.
4. While holding the exhaust camshaft firmly in place, remove the exhaust camshaft gear bolt and gear.
5. Remove the camshaft cap bolts gradually in the sequence shown for each camshaft cap.
6. Remove the intake and exhaust camshaft caps. Maintain the correct positions for installation.

Notice: Use extreme care when removing the camshaft not to nick, scratch, or damage the camshaft lobes or bearing surfaces.

7. Remove the intake/exhaust camshaft.

### Installation Procedure

1. Lubricate the camshaft journals and the camshaft caps with engine oil.
2. Install the intake and exhaust camshafts.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the intake and exhaust camshaft caps in their original positions.

Tighten
Tighten the intake/exhaust camshaft caps bolts to 16 N·m (12 lb ft).

4. Measure the intake and exhaust camshaft end play. Refer to Engine Mechanical Specifications .
5. Install the intake and exhaust camshaft gear.
6. While holding the intake and exhaust camshafts firmly in place, install the intake and exhaust camshaft gear bolts.

Tighten
Tighten the intake and exhaust camshaft gear bolts to 67.5 N·m (49 lb ft).

7. Install the timing belt. Refer to Timing Belt Replacement .
8. Install the camshaft cover. Refer to Valve Rocker Arm Cover Replacement .