Timing Chain Assembly: Installation

NOTE:

Be careful that the foreign matter is not into or onto assembled component during installation.
Apply engine oil to the all timing chain components.

Preparation for chain tensioner installation.
1. Insert the screw, spring pin and tension rod into tensioner body.
2. Rotate the rubber mat counterclockwise while pressing the chain tensioner from upper side by hand as shown in the figure.
  NOTE: Degrease the contact surface between tension rod top portion and rubber mat, to prevent slipping.
  
  Fig 1: Pressing Chain Tensioner From Upper Side
  Courtesy of SUBARU OF AMERICA, INC.
3. Insert the stopper pin into the chain tensioner body hole.
Set the oil pump shaft knock pin at the six o'clock position as shown in the figure.

Fig 2: Locating Oil Pump Shaft Knock Pin
Courtesy of SUBARU OF AMERICA, INC.
Using the ST, align the "Top mark" on crank sprocket to nine o'clock position as shown in the figure

Fig 3: Aligning Top Mark On Crank Sprocket
Courtesy of SUBARU OF AMERICA, INC.
Align the intake cam sprocket to 12 o'clock position as shown in the figure.

Fig 4: Aligning Intake Cam Sprocket To Clock Position
Courtesy of SUBARU OF AMERICA, INC.
Align the exhaust cam sprocket to 12 o'clock position as shown in the figure.

Fig 5: Aligning Exhaust Cam Sprocket
Courtesy of SUBARU OF AMERICA, INC.
Using the ST, align the "Top mark" on crank sprocket to 12 o'clock position as shown in the figure
NOTE:
- Piston #1 is at top dead center (TDC) position.
- Do not rotate the crankshaft and cam sprocket before completing timing chain installation.
- Crank sprocket key is located at three o'clock position.
  
  Fig 6: Aligning Top Mark On Crank Sprocket
  Courtesy of SUBARU OF AMERICA, INC.
Install the chain guide (Main).
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 7: Identifying Chain Guide
Courtesy of SUBARU OF AMERICA, INC.
Install the idler sprocket and timing chain (Main).
1. Align the timing chain mark (gold) to the idler sprocket timing mark position.
2. Align the idler sprocket timing mark to the six o'clock position, and then install the idler sprocket and timing chain.
3. Confirm the timing chain mark (gold) is set to the crank sprocket 12 o'clock position.
4. Install the idler sprocket bolt.
  ST1 18355AA000 PULLEY WRENCH
  
  ST2 18334AA000 PULLEY WRENCH PIN SET
  
  Tightening torque:
  
  120 N.m (12.2 kgf-m, 88.5 ft-lb)
  
  Fig 8: Identifying Gold And Timing Mark
  Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner lever (Main).
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 9: Identifying Chain Tensioner Lever (Main)
Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner (Main) and pull out the stopper pin.
NOTE: Timing chain (Main) components assembly is completed.

Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 10: Identifying Stopper Pin Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the chain guide (LH).
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 11: Identifying Chain Guide Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the chain guide (LH: between cams).
Tightening torque:

6.4 N.m (0.65 kgf-m, 4.7 ft-lb)

Fig 12: Identifying Chain Guide Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the timing chain (LH).
1. Align the timing chain mark (blue) to the intake crank sprocket (LH) timing mark.
  
  Fig 13: Aligning Timing Chain Mark To Intake Crank Sprocket Timing Mark
  Courtesy of SUBARU OF AMERICA, INC.
2. Align the timing chain mark (blue) to the exhaust crank sprocket (LH) timing mark.
  
  Fig 14: Aligning Timing Chain Mark To Exhaust Crank Sprocket Timing Mark
  Courtesy of SUBARU OF AMERICA, INC.
3. Install the timing chain to the water pump sprocket.
  
  Fig 15: Identifying Gold And Timing Mark
  Courtesy of SUBARU OF AMERICA, INC.
4. Align the idler sprocket timing mark to the timing chain mark (gold).
  
  Fig 16: Aligning Idler Sprocket Timing Mark To Timing Chain Mark
  Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner lever (LH).
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 17: Identifying Chain Tensioner Lever
Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner (LH) and pull out the stopper pin.
NOTE:
- Confirm the bolt is attached on the side of chain tensioner housing.
- Timing chain (LH) components assembly is completed.
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 18: Identifying Stopper Pin
Courtesy of SUBARU OF AMERICA, INC.
Install the chain guide (RH).
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 19: Identifying Chain Guide
Courtesy of SUBARU OF AMERICA, INC.
Install the chain guide (RH: between cams).
Tightening torque:

6.4 N.m (0.65 kgf-m, 4.7 ft-lb)

Fig 20: Identifying Chain Guide Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the timing chain (RH).
1. Align the timing chain mark (blue) to the intake crank sprocket (RH) timing mark.
  
  Fig 21: Aligning Timing Chain Mark To Intake Crank Sprocket Timing Mark
  Courtesy of SUBARU OF AMERICA, INC.
2. Align the timing chain mark (blue) to the exhaust crank sprocket (RH) timing mark.
  
  Fig 22: Aligning Timing Chain Mark To Intake Crank Sprocket Timing Mark
  Courtesy of SUBARU OF AMERICA, INC.
3. Align the idler sprocket timing mark to the timing chain mark (gold).
  
  Fig 23: Aligning Timing Chain Mark To Exhaust Crank Sprocket Timing Mark
  Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner lever (RH).
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 24: Aligning Idler Sprocket Timing Mark To Timing Chain Mark (Gold)
Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner (RH) and pull out the stopper pin.
NOTE: Timing chain (RH) components assembly is completed.

Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Fig 25: Identifying Chain Tensioner Lever
Courtesy of SUBARU OF AMERICA, INC.
Confirm the followings after installation.
CAUTION: Be sure to perform this confirmation.
1. Confirm that the idler sprocket timing mark and three timing chain marks (gold) are aligned.
2. Confirm that the crank sprocket 12 o'clock position and timing chain (Main) mark (gold) are aligned.
3. Confirm that the LH cam sprocket timing mark and timing chain mark (blue) are aligned.
4. Confirm that the RH cam sprocket timing mark and timing chain mark (blue) are aligned.
5. Confirm that the bolts are tightened to the specified tightening torque.
Confirm that there are no abnormalities, while turning the crankshaft in the engine rotating direction using ST.
CAUTION: Be sure to perform this confirmation.
Install the chain cover. <Ref. to INSTALLATION , Chain Cover.>
Install the crank pulley. <Ref. to INSTALLATION , Crank Pulley.>
Install the V-belt. <Ref. to INSTALLATION , V-belt.>
Fill engine oil. <Ref. to REPLACEMENT , Engine Oil.>
Confirm that there are no oil leakage at the chain cover mating surface.
Install the radiator. <Ref. to INSTALLATION , Radiator.>