Cylinder Head Assembly
CYLINDER HEAD SUB-ASSEMBLY RH (Reassembly)HINT: The cylinder head bolts are tightened in 3 progressive steps.
- Apply a light coat of engine oil to the threads and under the heads of the cylinder head bolts.
Step 1
- Using a 10 mm bi-hexagon wrench, install and uniformly tighten the 8 cylinder head bolts with the plate washers in several steps and in the sequence shown in the illustration.
Torque 36 Nm (367 kgf-cm, 27 ft-lbf)
Step 2
- Tighten the cylinder head bolts another 90°.
Step 3
- Tighten the cylinder head bolts by an additional 90°.
CYLINDER HEAD SUB-ASSEMBLY LH
HINT: The cylinder head bolts are tightened in 3 progressive steps.
Step 1
- Using a 10 mm bi-hexagon wrench, install and uniformly tighten the 8 cylinder head bolts with the plate washers in several steps in the sequence shown in the illustration.
Torque 36 Nm (367 kgf-cm, 27 ft-lbf)
Step 2
- Tighten the cylinder head bolts by 90°.
Step 3
- Tighten the cylinder head bolts by an additional 90°.
- Tighten the 2 bolts in the order shown in the illustration.
Torque 30 Nm (306 kgf-cm, 22 ft-lbf)
CYLINDER HEAD ASSEMBLY
Standard warpage:
Maximum warpage:
CYLINDER HEAD SET BOLT
Standard outside diameter 10.85 to 11.00 mm (0.4272 to 0.4331 in.)
Minimum outside diameter 10.70 mm (0.4213 in.)
Measuring point 103 mm (4.06 in.)
HINT: If a visual check reveals no excessively thin areas, check the center of the bolt and find the area that has the lowest diameter.
CAMSHAFT BEARING CAP (for RH Bank)
Make sure of the marks and numbers on the camshaft bearing caps and place them in each proper position and direction.
Temporarily tighten the 8 bolts in the order shown in the illustration.
Torque 10 Nm (102 kgf-cm, 7 ft-lbf)
CAMSHAFT HOUSING SUB-ASSEMBLY RH
(a) Make sure that the valve rocker arm is installed as shown in the illustration.
(b) Apply seal packing in a continuous line as shown in the illustration.
Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent
Seal diameter 3.5 to 4.5 mm (0.138 to 0.177 in.)
- Remove any oil from the contact surface.
- Install the camshaft housing sub-assembly RH within 3 minutes.
- Do not start the engine for at least 2 hours after installing.
(c) Install the camshaft housing RH and tighten the 12 bolts in the order shown in the illustration.
Torque 28 Nm (286 kgf-cm, 21 ft-lbf)
- When installing the camshaft housing RH, it is necessary to correctly position the camshafts as shown in the illustration. Failure to correctly position these parts may result in damage due to contact between the pistons and valves. If a camshaft is rotated with a piston at TDC, valve contact will occur.
- If any of the bolts are loosened during installation, remove the camshaft housing, clean the installation surfaces, and reapply seal packing.
- If the camshaft housing is removed because any of the bolts are loosened during installation, make sure that the previously applied seal packing does not enter any oil passages.
(d) Tighten the 8 bolts in the order shown in the illustration.
Torque 16 Nm (163 kgf-cm, 12 ft-lbf)
CAMSHAFT BEARING CAP (for LH Bank)
Make sure of the marks and numbers on the camshaft bearing caps and place them in each proper position and direction.
Temporarily tighten the 8 bolts in the order shown in the illustration.
Torque 10 Nm (102 kgf-cm, 7 ft-lbf)
CAMSHAFT HOUSING SUB-ASSEMBLY LH
(a) Make sure that the valve rocker arm is installed as shown in the illustration.
(b) Apply seal packing in a continuous line as shown in the illustration.
Seal packing: Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent
Seal diameter 3.5 to 4.5 mm (0.138 to 0.177 in.)
- Remove any oil from the contact surface.
- Install the camshaft housing sub-assembly LH within 3 minutes.
- Do not start the engine for at least 2 hours after installing.
(c) Install the camshaft housing LH and tighten the 13 bolts in the order shown in the illustration.
Torque 28 Nm (286 kgf-cm, 21 ft-lbf)
- When installing the camshaft housing LH, it is necessary to correctly position the camshafts as shown in the illustration. Failure to correctly position these parts may result in damage due to contact between the pistons and valves. If a camshaft is rotated with a piston at TDC, valve contact will occur.
- If any of the bolts are loosened during installation, remove the camshaft housing, clean the installation surfaces, and reapply seal packing.
- If the camshaft housing is removed because any of the bolts are loosened during installation, make sure that the previously applied seal packing does not enter any oil passages.
(d) Tighten the 8 bolts in the order shown in the illustration.
Torque 16 Nm (163 kgf-cm, 12 ft-lbf)
INTAKE MANIFOLD
Install and tighten the 6 bolts and 4 nuts uniformly in several steps.
Torque 21 Nm (214 kgf-cm, 15 ft-lbf)
EXHAUST MANIFOLD SUB-ASSEMBLY LH / RH
Torque 21 Nm (214 kgf-cm, 15 ft-lbf)