CAMSHAFT (for Bank 2): Installation

1. Apply engine oil to the camshaft journals, camshaft housing sub-assembly LH and camshaft bearing caps.
2. Install the No. 3 camshaft and No. 4 camshaft to the camshaft housing sub-assembly LH.
3. Make sure of the marks and numbers on the camshaft bearing caps and place them in each proper position and direction.
   Fig 1: Identifying Marks & Numbers On Camshaft Bearing Caps

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4. Temporarily tighten the 8 bolts in the order shown below.

   Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) 

   Fig 2: Identifying Camshaft Bearing Cap Bolts Tightening Sequence

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1. Make sure that the valve rocker arm is installed as shown below.
   Fig 3: Identifying Valve Rocker Arm

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2. Apply seal packing in a continuous line as shown below.

   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.) 

   NOTE:

   • 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.
   Fig 4: Identifying Seal Packing

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3. Install the camshaft housing sub-assembly LH and tighten the 13 bolts in the order shown below.

   Torque: 28 N*m (286 kgf*cm, 21 ft.*lbf) 

   NOTE:

   • When installing the camshaft housing LH, it is necessary to correctly position the camshafts as shown below. 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.
   Fig 5: Identifying Camshaft Housing Sub-Assembly LH Bolt Tightening Sequence

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4. Tighten the 8 bolts in the order shown below.

   Torque: 16 N*m (163 kgf*cm, 12 ft.*lbf) 

   Fig 6: Identifying Tightening Sequence Of Bolts

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1. Install the No. 3 chain tensioner assembly with the bolt.

   Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf) 

2. While pushing in the tensioner, insert a pin of 1.0 mm (0.039 in.) diameter into the hole to hold it.
   Fig 7: Inserting Pin Of 1.0 mm (0.039 in.) Into Hole To Hold It

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1. Align the mark plate (yellow) with the timing marks (2-dot mark) of the camshaft timing gear assemblies as shown below.
   Fig 8: Identifying Timing Marks

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2. Apply a light coat of engine oil to the bolt threads and bolt-seating surface.
3. Align the knock pin of the camshaft with the pin hole of the camshaft timing gear assembly. Install the camshaft timing gear assembly and camshaft timing exhaust gear LH with the No. 2 chain sub-assembly installed.
4. Hold the hexagonal portion of the camshaft with a wrench, and tighten the 2 bolts.

   Torque: 100 N*m (1020 kgf*cm, 74 ft.*lbf) 

   Fig 9: Holding Hexagonal Portion Of Camshaft Using Wrench

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Remove the pin from the No. 3 chain tensioner assembly.

HINT:

See INSTALLATION  .