Section 6 (Engine Mechanical (H4DOTC)): Camshaft: Installation

WARNING: This page is about a different variant/trim than selected.

Install the camshaft.
Apply engine oil to the cylinder head at camshaft journal 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.
- When set at the position shown in the figure, it is not necessary to rotate the camshaft RH when installing the timing belt, but it is necessary to rotate the camshaft LH slightly.
Intake camshaft LH:

Rotate 80° clockwise.

Exhaust camshaft LH:

Rotate 45° counterclockwise.

Fig 1: Identifying Liquid Gasket
Courtesy of SUBARU OF AMERICA, INC.
Install the camshaft cap.
1. Apply small amount of liquid gasket to the mating surface of front camshaft cap and rear camshaft cap (RH side only).
  NOTE:
  - Install within 5 min. after applying liquid gasket.
  - 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 1217G (Part No. K0877Y0100) or equivalent
  
  Fig 2: Identifying Liquid Gasket
  Courtesy of SUBARU OF AMERICA, INC.
2. Apply a thin coat of engine oil to the cap journal surface, and install the camshaft cap to the camshaft.
3. Gradually tighten the camshaft cap in at least two steps, in alphabetical order shown in the figure, and then tighten to the specified torque.
  Tightening torque:
  
  T1: 9.75 N.m (1.0 kgf-m, 7.2 ft-lb)
  
  T2: 20 N.m (2.0 kgf-m, 14.8 ft-lb)
  
  Fig 3: Identifying Camshaft Cap Bolts Tightening Sequence
  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 a thin coat of engine oil to the periphery of the camshaft oil seal and oil seal lip, and install the oil seal on the camshaft using ST1 and ST2.
NOTE: Use a new oil seal.

ST1 499587600 OIL SEAL INSTALLER

ST2 499597200 OIL SEAL GUIDE

Fig 4: Installing Oil Seal On Camshaft Using ST1 And ST2
Courtesy of SUBARU OF AMERICA, INC.
Install the oil pipe to the front camshaft cap using the union bolt without filter (without protrusion).
Tightening torque:

29 N.m (3.0 kgf-m, 21.4 ft-lb)

Fig 5: Identifying Oil Pipe Union Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the tensioner bracket.
Tightening torque:

24.5 N.m (2.5 kgf-m, 18.1 ft-lb)

Fig 6: Locating Tensioner Bracket Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the timing belt cover No. 2 RH (A) and timing belt cover No. 2 LH (B).
Tightening torque:

5 N.m (0.5 kgf-m, 3.7 ft-lb)

Fig 7: Identifying Timing Belt Cover No. 2 RH And Timing Belt Coverc No. 2 LH
Courtesy of SUBARU OF AMERICA, INC.
Install the cam sprocket. Refer to , INSTALLATION , Cam Sprocket.
Install the timing belt. Refer to , INSTALLATION , Timing Belt.
Adjust the valve clearance. Refer to , ADJUSTMENT , Valve Clearance.
Install the rocker cover.
1. Install the rocker cover gasket to the rocker cover. (Outer section and ignition coil section)
  NOTE: Use a new rocker cover gasket.
2. Apply liquid gasket to the specified point of the cylinder head.
  NOTE: Install within 5 min. after applying liquid gasket.
  
  Liquid gasket:
  
  THREE BOND 1217G (Part No. K0877Y0100) or equivalent
  
  Fig 8: Identifying Liquid Gasket
  Courtesy of SUBARU OF AMERICA, INC.
3. Install the rocker cover onto cylinder heads. Ensure the gasket is properly positioned during installation.
4. Temporarily tighten the rocker cover bolts in alphabetical order shown in the figure, and then tighten to specified torque in alphabetical order.
  Tightening torque:
  
  6.4 N.m (0.7 kgf-m, 4.7 ft-lb)
  
  Fig 9: Identifying Rocker Cover Bolts Tightening Sequence
  Courtesy of SUBARU OF AMERICA, INC.
5. Install the scavenge pump. Refer to SCAVENGE PUMP .
6. Connect the PCV hose and vacuum hose to the rocker cover.
  NOTE: Use a new clamp for the PCV hose clamp, fit the cut out in the ST with the protrusion on the clamp as shown in the figure, and lock the clamp.
  
  ST 18353AA000 CLAMP PLIERS
  
  Fig 10: Identifying Clamp Pliers (ST 18353AA000)
  Courtesy of SUBARU OF AMERICA, INC.
  
  Fig 11: Locating PCV Hose And Vacuum Hose
  Courtesy of SUBARU OF AMERICA, INC.
7. Install the ignition coil. Refer to IGNITION COIL .
8. Secure the engine harness or oil level switch harness to the rocker cover with the clip (A) and bolt (B).
  Tightening torque:
  
  6.4 N.m (0.7 kgf-m, 4.7 ft-lb)
  
  Fig 12: Identifying Oil Level Switch Harness Clip And Bolt
  Courtesy of SUBARU OF AMERICA, INC.
9. Connect the connector to the oil level switch.
  
  Fig 13: Locating Oil Level Switch Connector
  Courtesy of SUBARU OF AMERICA, INC.
10. Connect the connector to the intake oil flow control solenoid valve.
  
  Fig 14: Locating Intake Oil Flow Control Solenoid Valve Connector
  Courtesy of SUBARU OF AMERICA, INC.
11. Connect the connectors to the exhaust camshaft position sensor (A) and exhaust oil flow control solenoid valve (B).
  
  Fig 15: Identifying Exhaust Camshaft Position Sensor And Exhaust Oil Flow Control Solenoid Valve Connectors
  Courtesy of SUBARU OF AMERICA, INC.
12. Install the timing belt cover. Refer to , INSTALLATION , Timing Belt Cover.
13. Install the crank pulley. Refer to , INSTALLATION , Crank Pulley.
14. Install the engine to the vehicle. Refer to , INSTALLATION , Engine Assembly.