Timing Chain Assembly: Installation

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

NOTE:

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

Prepare to attach the chain tensioner.
1. Insert the screw, spring pin and plunger into the tensioner body.
2. As shown in the figure, turn the rubber mat counterclockwise while holding the chain tensioner from above by hand.
  NOTE: Degrease the contact surface between the plunger head and rubber mat, so that they do not slip.
  
  Fig 1: Attaching Chain Tensioner
  Courtesy of SUBARU OF AMERICA, INC.
3. Insert the stopper pin into the hole on the chain tensioner body.
Align the position of oil pump shaft knock pin to six o'clock position as shown in the figure.

Fig 2: Locating Oil Pump Shaft Knock Pin
Courtesy of SUBARU OF AMERICA, INC.
Using ST, align the "Top mark" on crank sprocket to nine o'clock position as shown in the figure.
ST 18252AA000 CRANKSHAFT SOCKET

Fig 3: Identifying Top Mark On Crank Sprocket
Courtesy of SUBARU OF AMERICA, INC.
Align the intake cam sprocket to twelve o'clock position as shown in the figure.
ST 499977500 CAM SPROCKET WRENCH

Fig 4: Aligning Intake Cam Sprocket To Twelve O'Clock Position
Courtesy of SUBARU OF AMERICA, INC.
Align the exhaust cam sprocket to twelve o'clock position as shown in the figure.
ST 499977500 CAM SPROCKET WRENCH

Fig 5: Aligning Exhaust Cam Sprocket To Twelve O'Clock Position
Courtesy of SUBARU OF AMERICA, INC.
Using ST, align the "Top mark" on crank sprocket to twelve o'clock position as shown in the figure.
NOTE:
- The #1 piston is positioned at TDC.
- Do not rotate the crankshaft and cam sprocket before completing timing chain installation.
- At this time, crank sprocket key is at three o'clock position.
ST 18252AA000 CRANKSHAFT SOCKET

Fig 6: Identifying 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 Bolts With Torque Specification (Main)
Courtesy of SUBARU OF AMERICA, INC.
Install the idler sprocket and timing chain (main).
1. Match the timing chain mark (gold) to the timing mark position of the idler sprocket.
2. Align the idler sprocket timing mark at six o'clock position, and install the idler sprocket and timing chain.
3. Make sure that the timing chain mark (gold) is located at twelve o'clock position on the crank sprocket.
4. Use the ST to lock the idler sprocket, and 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 Timing Chain Mark (Gold) On Crank Sprocket
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 Bolt With Torque Specification (Main)
Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner (main) and pull out the stopper pin.
NOTE: The timing chain (main) line will be complete.

Tightening torque:

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

Fig 10: Identifying Chain Tensioner Bolts With Torque Specification (Main)
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 With Torque Specification (LH)
Courtesy of SUBARU OF AMERICA, INC.
Install the chain guide (LH: between cams).
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

Fig 12: Identifying Chain Guide Bolts With Torque Specification (LH Between Cams)
Courtesy of SUBARU OF AMERICA, INC.
Install timing chain (LH).
1. Match the timing mark of intake cam sprocket (LH) to the timing chain mark (blue).
  
  Fig 13: Identifying Timing Mark Of Intake Cam Sprocket (LH) To Timing Chain Mark (Blue)
  Courtesy of SUBARU OF AMERICA, INC.
2. Match the timing mark of exhaust cam sprocket (LH) to the timing chain mark (blue).
  
  Fig 14: Identifying Timing Mark Of Exhaust Cam Sprocket (LH) To Timing Chain Mark (Blue)
  Courtesy of SUBARU OF AMERICA, INC.
3. Install the timing chain to the water pump sprocket.
  
  Fig 15: Identifying Water Pump Sprocket
  Courtesy of SUBARU OF AMERICA, INC.
4. Match the timing mark of idler sprocket to the timing chain mark (gold).
  
  Fig 16: Identifying Timing Mark Of Idler Sprocket To Timing Chain Mark (Gold)
  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: Locating Chain Tensioner Lever Bolt With Torque Specification (LH)
Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner (LH) and pull out the stopper pin.
NOTE:
- Make sure that there is a bolt attached on the side face of the chain tensioner housing.
- The timing chain (LH) line will be complete.
Tightening torque:

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

Fig 18: Identifying Chain Tensioner Bolts With Torque Specification (LH)
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 Bolts With Torque Specification (RH)
Courtesy of SUBARU OF AMERICA, INC.
Install the chain guide (RH: between cams).
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

Fig 20: Identifying Chain Guide Bolts With Torque Specification (RH Between Cams)
Courtesy of SUBARU OF AMERICA, INC.
Install timing chain (RH).
1. Match the timing mark of intake cam sprocket (RH) to the timing chain mark (blue).
  
  Fig 21: Identifying Timing Mark Of Intake Cam Sprocket (RH) To Timing Chain Mark (Blue)
  Courtesy of SUBARU OF AMERICA, INC.
2. Match the timing mark of exhaust cam sprocket (RH) to the timing chain mark (blue).
  
  Fig 22: Identifying Timing Mark Of Exhaust Cam Sprocket (RH) To Timing Chain Mark (Blue)
  Courtesy of SUBARU OF AMERICA, INC.
3. Match the timing mark of idler sprocket to the timing chain mark (gold).
  
  Fig 23: Identifying Timing Mark Of Idler Sprocket To Timing Chain Mark (Gold)
  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: Identifying Chain Tensioner Lever Bolt With Torque Specification (RH)
Courtesy of SUBARU OF AMERICA, INC.
Install the chain tensioner (RH) and pull out the stopper pin.
NOTE: The timing chain (RH) line will be complete.

Tightening torque:

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

Fig 25: Identifying Chain Tensioner Bolts With Torque Specification (RH)
Courtesy of SUBARU OF AMERICA, INC.
After installation, perform the following confirmations.
CAUTION: Always make sure to perform this confirmation.
1. Make sure that the timing mark of idler sprocket is aligned to three timing chain marks (gold).
2. Make sure that the twelve o'clock position on the crank sprocket is aligned to the timing chain (main) mark (gold).
3. Make sure that the LH side cam sprocket timing mark is aligned to the timing chain mark (blue).
4. Make sure that the RH side cam sprocket timing mark is aligned to the timing chain mark (blue).
5. Make sure that all bolts are tightened at the specified torque.
Using the ST, turn the crankshaft in the direction of engine rotation, and make sure that there are no abnormal conditions.
CAUTION: Always make 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-belts. < Ref. to INSTALLATION , V-belt. >
Fill engine oil. < Ref. to REPLACEMENT , Engine Oil. >
Make sure there is no oil leaks in the chain cover mating surface.
Install the radiator. < Ref. to INSTALLATION , Radiator. >