Timing Chain: Installation

All engines 

1. 1.
   
   
   NOTE: It may be necessary to rotate the camshafts slightly, to align the timing marks.

   Install the timing chain with the colored links aligned with the timing marks on the VCT units and the crankshaft sprocket.

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1. 2.
   
   Install the lower LH timing chain guide and the bolts.

   Torque: 89 lb.in (10 Nm)

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1. 3.
   
   Install the timing chain tensioner arm.

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Late build engine 

1. 4.
   
   

   1. 1.
      
      Position the tensioner in a soft-jawed vise.

   1. 2.
      
      Using pliers, squeeze the ends of the ratchet wire clip together.

   1. 3.
      
      Using the soft-jawed vise, compress the plunger to the reset position.

   1. 4.
      
      Install a locking pin in the 2 holes of the tensioner body to hold the plunger in place.

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1. 5.
   
   
   NOTE: It may be necessary to rotate the camshafts slightly to remove slack from the timing chain to install the tensioner.

   1. 1.
      
      Install the timing chain tensioner and the bolts.

      Torque: 89 lb.in (10 Nm)

   1. 2.
      
      Remove the lockpin.

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Early build engine 

1. 6.
   
   
   • Release the ratchet detent.
   • Using a soft-jawed vise, compress the ratchet plunger.
   • Align the hole in the ratchet plunger with the hole in the tensioner housing.
   • Install a lockpin.

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1. 7.
   
   
   NOTE: It may be necessary to rotate the camshafts slightly to remove slack from the timing chain to install the tensioner.
   • Install the timing chain tensioner and the bolts.

     Torque: 89 lb.in (10 Nm)

   • Remove the lockpin.

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All engines 

1. 8.
   
   
   • As a post-check, verify correct alignment of all timing marks.
   • There are 48 links in between the RH intake VCT unit colored link (1) and the LH intake VCT unit colored link (2).
   • There are 35 links in between LH intake VCT unit colored link (2) and the 2 crankshaft sprocket links (3).

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1. 9.
   
   
   NOTE: Do not use excessive force when installing the VCT oil control solenoid. Damage to the mega cap could cause the cylinder head to be inoperable. If difficult to install the VCT oil control solenoid, inspect the bore and VCT oil control solenoid to ensure there are no burrs, sharp edges or contaminants present on the mating surface. Only clean the external surfaces as necessary.
   NOTE: A slight twisting motion will aid in the installation of the VCT oil control solenoid.
   NOTE: Keep the VCT oil control solenoid clean of dirt and debris.

   Install the VCT oil control solenoids and the bolts.

   Torque:

   Stage 1: 71 lb.in (8 Nm)

   Stage 2: 20 °

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1. 10.
   
   Remove Special Service Tool: 303-1248 Camshaft holding tools.

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1. 11.
   
   Install the RH oil tube and the bolts.

   Torque:

   Stage 1: 71 lb.in (8 Nm)

   Stage 2: 45 °

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1. 12.
   
   Remove Special Service Tool: 303-1248 Camshaft holding tools.

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1. 13.
   
   Install the LH oil tube and the bolts.

   Torque:

   Stage 1: 71 lb.in (8 Nm)

   Stage 2: 45 °

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1. 14.
   
   Install the engine front cover. Refer to: Engine Front Cover .