Section 17 (Engine Mechanical (H4DOTC)): Camshaft: Installation

Apply engine oil to the cylinder head at camshaft bearing location before installing the camshaft. Install the camshaft so that each valve is close to or in contact with "base circle" of cam lobe.

Intake camshaft (LH):

Rotate 80° clockwise.

Exhaust camshaft (LH):

Rotate 45° counterclockwise.

Fig 1: Rotating 45° Counterclockwise

Courtesy of SUBARU OF AMERICA, INC.

1. Apply small amount of liquid gasket to the cap mating surface.
   NOTE: Do not apply liquid gasket excessively. Otherwise, the excessive liquid gasket may come out and flow toward oil seal, resulting in oil leaks.

   Liquid gasket: 

   THREE BOND 1215 (Part No. 004403007) or equivalent 

   Fig 2: Applying Small Amount Of Liquid Gasket To Cap Mating Surface

   Courtesy of SUBARU OF AMERICA, INC.
2. Apply engine oil to the cap bearing surface, and install the cap on camshaft as shown by identification mark.
3. Gradually tighten the camshaft cap and oil control valve assembly in at least two stages in alphabetical sequence shown in Fig 3 , and then tighten to the 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: Tightening Camshaft Cap And Oil Control Valve Assembly

   Courtesy of SUBARU OF AMERICA, INC.
4. After tightening the camshaft cap, ensure the camshaft rotates only slightly while holding it at "base circle".

Apply grease to the new oil seal lips and press onto the front end of camshaft by using ST1 and ST2.

ST1 499587600 OIL SEAL INSTALLER

ST2 499597200 OIL SEAL GUIDE

Fig 4: Installing Camshaft Oil Seal Using Special Tools

Courtesy of SUBARU OF AMERICA, INC.

1. Install the gasket on rocker cover. Install the peripheral gasket and ignition coil gasket.
2. Apply liquid gasket to the designated point of cylinder head.

   Liquid gasket: 

   THREE BOND 1215 (Part No. 004403007) or equivalent 

   Fig 5: Applying Liquid Gasket

   Courtesy of SUBARU OF AMERICA, INC.
3. Install the rocker cover on cylinder head. Ensure the gasket is properly positioned during installation.
4. Tighten the rocker cover tightening bolt in alphabetical sequence shown in Fig 6 , and then tighten to the specified torque.

Tightening torque: 

6.4 N.m (0.65 kgf-m, 4.7 ft-lb) 

Fig 6: Tightening Bolt

Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: 

29 N.m (3.0 kgf-m, 21.4 ft-lb) 

Fig 7: Installing Oil Pipe

Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: 

5 N.m (0.5 kgf-m, 3.6 ft-lb) 

Fig 9: Installing Timing Belt Cover No. 2 (RH)

Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: 

5 N.m (0.5 kgf-m, 3.6 ft-lb) 

Fig 10: Installing Timing Belt Cover No. 2 (LH)

Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: 

25 N.m (2.5 kgf-m, 18.1 ft-lb) 

Fig 11: Installing Tensioner Bracket

Courtesy of SUBARU OF AMERICA, INC.

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