Engine Mechanical (H4DOTC): Camshaft: Installation

Camshaft installation:
Apply engine oil to the cylinder head at camshaft bearing installation location before installing the camshaft. Install the camshaft so that each valve is close to or in contact with base circle of the cam lobe.
NOTE:
- Set the camshaft to the position shown in the figure. It is necessary to rotate the camshaft (LH) slightly when installing the timing belt.
- Camshaft (RH) need not be rotated when set at the position shown in the figure.
Intake camshaft (LH):

Rotate 80° clockwise.

Exhaust camshaft (LH):

Rotate 45° counterclockwise.

Fig 1: Identifying Camshaft Position
Camshaft cap and oil flow control solenoid valve assembly installation:
1. Apply small amount of liquid gasket to the mating surface of cap.
  NOTE: Do not apply liquid gasket excessively. Applying excessively may cause excess gasket to come out and flow toward oil seal, resulting in oil leak.
  
  Liquid gasket: THREE BOND 1215 (Part No. 004403007) or equivalent
  
  Fig 2: Applying Liquid Gasket To Cap Mating Surface
2. Apply a thin coat of engine oil to the cap bearing surface, and install the cap to the camshaft according to the identification mark.
3. Gradually tighten the camshaft cap and oil control valve assembly in at least two stages in alphabetical sequence shown in the figure, and then tighten to specified torque.
  Tightening torque:
  
  T1 : 10 N.m (1.0 kgf-m, 7.2 ft-lb)
  
  T2 : 20 N.m (2.0 kgf-m, 14.5 ft-lb)
  
  Fig 3: Identifying Camshaft Cap Bolts Tightening Sequence
4. After tightening the camshaft cap, ensure the camshaft rotates only slightly while holding it at base circle.
Camshaft oil seal installation:
Apply grease to the new oil seal lips and press onto the front end of camshaft by using ST1 and ST2.

NOTE: Use a new oil seal.

ST1 499587600 OIL SEAL INSTALLER

ST2 499597200 OIL SEAL GUIDE

Fig 4: Installing Camshaft Oil Seal Using ST1 499587600 And ST2 499597200
Rocker cover installation:
1. Install the gasket on rocker cover. Install the peripheral gasket and ignition coil gasket.
2. Apply liquid gasket to the specified point of the cylinder head.
  NOTE: Apply extra amount of liquid gasket around semicircular plugs 5 mm or more.
  
  Liquid gasket: THREE BOND 1215 (Part No. 004403007) or equivalent
  
  Fig 5: Applying Liquid Gasket To Cylinder Head
3. Install the rocker cover on cylinder head. Ensure the gasket is properly positioned during installation.
4. Temporarily tighten the rocker cover tightening bolt in alphabetical sequence shown in the figure, and then tighten to specified torque.
Tightening torque: 6.4 N.m (0.65 kgf-m, 4.7 ft-lb)

Fig 6: Identifying Rocker Cover Bolts Tightening Sequence
Install the oil pipe.
Tightening torque: 29 N.m (3.0 kgf-m, 21.4 ft-lb)

Fig 7: Identifying Union Screws
Connect the oil flow control solenoid valve connector.

Fig 8: Identifying Oil Flow Control Solenoid Valve Connector
Install the spark plug cord.
Similarly, install the parts on right-hand side.
Install the timing belt cover No. 2 (RH).
Tightening torque: 5 N.m (0.5 kgf-m, 3.6 ft-lb)

Fig 9: Identifying Timing Belt Cover Bolts (RH)
Install the timing belt cover No. 2 (LH).
Tightening torque: 5 N.m (0.5 kgf-m, 3.6 ft-lb)

Fig 10: Identifying Timing Belt Cover No. 2 (LH)
Install the tensioner bracket.
Tightening torque: 24.5 N.m (2.5 kgf-m, 18.1 ft-lb)

Fig 11: Identifying Tensioner Bracket
Install the crank sprocket.
< Ref. to INSTALLATION , Crank Sprocket. >
Install the cam sprocket.
< Ref. to INSTALLATION , Cam Sprocket. >
Install the timing belt. < Ref. to INSTALLATION , Timing Belt. >
Install the timing belt cover.
< Ref. to INSTALLATION , Timing Belt Cover. >
Install the crank pulley.
< Ref. to INSTALLATION , Crank Pulley. >
Install the V-belts. < Ref. to INSTALLATION , V-belt. >