Cylinder Head LH

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

Clean the bolt holes in the cylinder block LH.
CAUTION: To avoid erroneous tightening of the bolts, clean out the bolt holes sufficiently by blowing with compressed air to eliminate engine coolant etc.
Apply liquid gasket to both sides of the cylinder head gasket LH as shown in the figure.
NOTE:
- Use a new cylinder head gasket LH.
- Before applying liquid gasket, degrease the mating surface of cylinder blocks LH and cylinder head LH.
- Install within 5 min. after applying liquid gasket.
Liquid gasket:

THREE BOND 1217G (Part No. K0877Y0100), THREE BOND 1217H or equivalent

Liquid gasket applying diameter:

3±1 mm (0.1181±0.0394 in)

Fig 1: Cylinder Head LH Liquid Gasket Applying Dimension
Courtesy of SUBARU OF AMERICA, INC.
Attach the cylinder head gasket LH.
NOTE: Check that liquid gasket is squeezed out from the cylinder head gasket LH.
Install the cylinder head LH to the cylinder block LH.
CAUTION: Be careful not to scratch the mating surface of cylinder head LH and cylinder block LH.
1. Clean the cylinder head bolt threads and apply sufficient engine oil to the washer and cylinder head bolts threads.
2. Mount the cylinder head LH onto the cylinder block LH, and tighten all bolts with a torque of 29 N.m (3.0 kgf-m, 21.4 ft-lb) in numerical order as shown in the figure.
  
  Fig 2: Cylinder Head LH Bolts
  Courtesy of SUBARU OF AMERICA, INC.
3. Tighten all cylinder head bolts further with a torque of 100 N.m (10.2 kgf-m, 73.8 ft-lb) in numerical order as shown in the figure.
  CAUTION: If the bolt makes stick-slip sound during tightening, repeat the procedure from step 1). In that case, the cylinder head gasket LH can be reused. But it is necessary to remove liquid gasket completely from cylinder block LH, cylinder head LH and cylinder head gasket LH and re-apply to them.
  
  Fig 3: Cylinder Head LH Bolts
  Courtesy of SUBARU OF AMERICA, INC.
4. Loosen all cylinder head bolts 180° in numerical order as shown in the figure, and then loosen all cylinder head bolts 180° further in numerical order as shown in the figure.
  
  Fig 4: Cylinder Head LH Bolts
  Courtesy of SUBARU OF AMERICA, INC.
5. Tighten all cylinder head bolts with a torque of 42 N.m (4.3 kgf-m, 31.0 ft-lb) in numerical order as shown in the figure.
  
  Fig 5: Cylinder Head LH Bolts
  Courtesy of SUBARU OF AMERICA, INC.
6. Using angle gauge, tighten all cylinder head bolts with specified angle in numerical order as shown in the figure.
  ST 499817100 ENGINE STAND
  
  Tightening angle:
  
  80°±2°
  
  Fig 6: Using Angle Gauge
  Courtesy of SUBARU OF AMERICA, INC.
7. Using angle gauge, tighten the cylinder head bolts (2 places) with specified angle in numerical order as shown in the figure.
  ST 499817100 ENGINE STAND
  
  Tightening angle:
  
  75°±2°
  
  Fig 7: Using Angle Gauge
  Courtesy of SUBARU OF AMERICA, INC.
8. Using angle gauge, tighten the cylinder head bolts (4 places) with specified angle in numerical order as shown in the figure.
  NOTE: After tightening, if the liquid gasket is squeezed out onto the seal surface of the chain cover, completely remove any squeezed-out liquid gasket.
  
  ST 499817100 ENGINE STAND
  
  Tightening angle:
  
  30°±2°
  
  Fig 8: Using Angle Gauge
  Courtesy of SUBARU OF AMERICA, INC.
Install the A/C compressor. Ref. to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>Compressor>INSTALLATION .
Install the cam carrier LH. Ref. to MECHANICAL(H4DO)>Cam Carrier>INSTALLATION>CAM CARRIER LH .
Install the rocker cover LH. Ref. to MECHANICAL(H4DO)>Rocker Cover>INSTALLATION>ROCKER COVER LH .
Install the chain cover. Ref. to MECHANICAL(H4DO)>Chain Cover>INSTALLATION .
Install the engine wiring harness. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Engine Wiring Harness>INSTALLATION .
Install the intake manifold assembly. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Intake Manifold Assembly>INSTALLATION .
Install the engine to the vehicle. Ref. to MECHANICAL(H4DO)>Engine Assembly>INSTALLATION .