Camshaft Bearing: Service and Repair
CAMSHAFT BEARING BRIDGEREMOVAL
1. Remove the cylinder head covers.
Note: Rotate engine at the crankshaft in running direction until scribe mark 40° on pulley/vibration damper corresponds with scribe mark on timing chain cover. Grooves in the camshafts must be toward the inside of the wedge.
2. Position the engine timing at 40° ATDC.
3. Using Special Tools 9104 (1) and 9105 Camshaft Locating Plates, lock the camshafts by placing the tool flush on the cylinder head, and inserting it into the groove in the camshaft.
4. Remove the timing chain tensioner (1).
5. Use a cable tie (1) to secure the timing chains to the camshaft sprockets.
6. Remove the camshaft sprocket bolt (1) and sprocket.
7. Partially loosen the bolts in the sequence shown. (See diagram).
8. Loosen and remove the bearing bridge bolts in the sequence shown. Remove the camshaft bearing bridges.
INSTALLATION
1. Make sure the engine is at 40° ATDC.
2. Position the camshaft bearing bridge on the camshaft.
3. Using Special Tools 9104 (1) and 9105 Camshaft Locating Plates, lock the camshafts by placing the tool flush on the cylinder head, and inserting it into the groove in the camshaft.
4. Install, but do not tighten the bearing bridge bolts.
5. Tighten the bolts in the sequence shown to 15 Nm (11 ft. lbs.).
6. Tighten the bolts in the sequence shown an additional 90° clockwise.
7. Install the camshaft sprockets and bolts (1). Tighten the bolts to 50 Nm (37 ft. lbs.).
8. Tighten the camshaft sprocket bolts and additional 90° clockwise.
9. Install the timing chain tensioner (1). Tighten the tensioner to 80 Nm (59 ft. lbs.).
10. Remove the cable tie.
11. Remove the Special Tools 9104 and 9105 Camshaft Locating Plates.
12. Install the cylinder head covers.
13. Install the air cleaner housing.