Camshaft Bearing
CAMSHAFTS (BANK 1)CAMSHAFT
NOTICE: Keep the camshaft level while it is being removed. The camshaft thrust clearance is very small and failing to keep it level could crack or damage the cylinder head journal surface, which receives the thrust. This could subsequently lead the camshaft to seize or break. Perform the following steps to avoid such problems.
- Align the yellow mark link with the timing mark (1 dot mark) of the camshaft timing gear as shown in the illustration.
- Apply new engine oil to the thrust portion and journal of the camshafts.
- Temporarily install the No. 1 chain onto the No. 2 chain of the camshaft timing gear.
- Align the knock pin hole of the camshaft timing gear with the knock pin of the No. 1 camshaft, and insert the No. 1 camshaft into the camshaft timing gear.
- Temporarily install the camshaft timing gear set bolt.
- Install the No. 1 camshaft onto the RH cylinder head with the cam lobes of the No. 1 cylinder facing downward as shown in the illustration.
- Install the 4 bearing caps in the proper locations as shown.
(h) Apply a light coat of engine oil to the threads and under the heads of the bearing cap bolts.
- Using several steps, uniformly install and tighten the 8 bearing cap bolts in the sequence shown in the illustration.
Torque: 9.0 Nm (92 kgf-cm, 80 in-lbf) for 10 mm (0.39 in.) head
Torque: 24 Nm (245 kgf-cm, 18 ft-lbf) for 12 mm (0.47 in.) head
- Rotate the No. 1 camshaft clockwise using a wrench so that the timing mark of the camshaft timing gear is aligned with the timing mark of the camshaft bearing cap.
- Align the paint mark of the No. 1 chain with the timing mark of the camshaft timing gear.
- Hold the hexagonal portion of the No. 1 camshaft with a wrench, and tighten the camshaft timing gear set bolt.
Torque: 100 Nm (1,020 kgf-cm, 74 ft-lbf)
NO.2 CAMSHAFT
NOTICE: Keep the camshaft level while it is being removed. The camshaft thrust clearance is very small and failing to keep it level could crack or damage the cylinder head journal surface, which receives the thrust. This could subsequently lead the camshaft to seize or break. Perform the following steps to avoid such problems.
- Install the No. 2 camshaft onto the RH cylinder head with the cam lobes of No. 1 cylinder facing upward as shown in the illustration.
- Install the 4 bearing caps in the proper locations as shown.
- Apply a light coat of engine oil to the threads and under the heads of the bearing cap bolts.
- Using several steps, uniformly install and tighten the 8 bearing cap bolts in the sequence shown in the illustration.
Torque: 9.0 Nm (92 kgf-cm, 80 in-lbf) for 10 mm (0.39 in.) head
Torque: 24 Nm (245 kgf-cm, 18 ft-lbf) for 12 mm (0.47 in.) head
- Rotate the No. 2 camshaft clockwise using a wrench so that the knock pin of the No. 2 camshaft is aligned with the knock pin hole of the camshaft timing gear.
- Hold the hexagonal portion of the No. 2 camshaft with a wrench, and install the camshaft timing gear set bolt.
Torque: 100 Nm (1,020 kgf-cm, 74 ft-lbf)
- Remove the pin from the chain tensioner No. 2.
CAMSHAFTS (BANK 2)
NO.3 CAMSHAFT SUB-ASSEMBLY
NOTICE: Keep the camshaft level while it is being removed. The camshaft thrust clearance is very small and failing to keep it level could crack or damage the cylinder head journal surface, which receives the thrust. This could subsequently lead the camshaft to seize or break. Perform the following steps to avoid such problems.
- Align the yellow mark link with the timing mark (2 dot marks) of the camshaft timing gear as shown in the illustration.
- Apply new engine oil to the thrust portion and journal of the camshafts.
- Temporarily put the No. 1 chain on the No. 2 chain of the camshaft timing gear.
- Align the knock pin hole in the camshaft timing gear with the knock pin of the No. 3 camshaft, and insert the No. 3 camshaft into the camshaft timing gear.
- Temporarily install the camshaft timing gear set bolt.
- Set the No. 3 camshaft onto the LH cylinder head with the cam lobes of the No. 2 cylinder facing downward as shown in the illustration.
- Install the 4 bearing caps in the proper locations as shown.
- Apply a light coat of engine oil to the threads and under the heads of the bearing cap bolts.
- Using several steps, uniformly install and tighten the 8 bearing cap bolts in the sequence shown in the illustration.
Torque: 9.0 Nm (92 kgf-cm, 80 in-lbf) for 10 mm (0.39 in.) head
Torque: 24 Nm (245 kgf-cm, 18 ft-lbf) for 12 mm (0.47 in.) head
- Align the paint mark of the No. 1 chain with the timing marks of the camshaft timing gear.
- Hold the hexagonal portion of the No. 3 camshaft with a wrench, and tighten the camshaft timing gear set bolt.
Torque: 100 Nm (1,020 kgf-cm, 74 ft-lbf)
NO.4 CAMSHAFT SUB-ASSEMBLY
NOTICE: Keep the camshaft level while it is being removed. The camshaft thrust clearance is very small and failing to keep it level could crack or damage the cylinder head journal surface, which receives the thrust. This could subsequently lead the camshaft to seize or break. Perform the following steps to avoid such problems.
- Align the knock pin hole in the camshaft timing gear with the knock pin of he No. 4 camshaft, and insert the No. 4 camshaft into the camshaft timing gear.
- Temporarily install the camshaft timing gear set bolt.
- Install the 4 bearing caps in the proper locations as shown.
- Apply a light coat of engine oil to the threads of the bearing cap bolts.
- Using several steps, uniformly install and tighten the 8 bearing cap bolts in the sequence shown in the illustration.
Torque: 9.0 Nm (92 kgf-cm, 80 in-lbf) for 10 mm (0.39 in.) head
Torque: 24 Nm (245 kgf-cm, 18 ft-lbf) for 12 mm (0.47 in.) head
- Hold the hexagonal portion of the No. 4 camshaft with a wrench, and tighten the camshaft timing gear set bolt.
Torque: 100 Nm (1,020 kgf-cm, 74 ft-lbf)
- Remove the pin from the chain tensioner No. 3.
- Release the chain tension between the camshaft timing gear (RH bank) and crankshaft timing gear by turning the crankshaft pulley clockwise slightly.