Timing Drive Components —Camshaft Timing
Special Tool(s)
/ Timing Chain Tensioner
303–571 (T97T-6K254-A)
/ Camshaft Gear Removal Tool
303–575 (T97T-6256-F)
/ Camshaft Gear Torque Adapter
303–565 (T97T-6256-G)
/ Camshaft Gear Holding Tool
303–564 (T97T-6256-B)
/ Camshaft Gear Holding Tool Adapter
303–578 (T97T-6256-A)
/ Camshaft Holding Tool
303–577 (T97T-6256-C)
/ Crankshaft Holding Tool
303–573 (T97T-6303-A)
/ Camshaft Holding Tool Adapter
303–576 (T97T-6256-D)
  1. Remove the LH valve cover. For additional information, refer to Valve Cover—LH in this section.
  1. Remove the RH valve cover. For additional information, refer to Valve Cover—RH in this section.
  1. Remove the intake manifold. For additional information, refer to Intake Manifold in this section.
  1. Remove the fuel supply manifold. For additional information, refer to Section 303-04 .
  1. Remove the accessory drive belt. For additional information, refer to Section 303-05 .
  1. Remove the thermostat housing. For additional information, refer to Section 303-03 .
  1. Remove the roller followers. For additional information, refer to Roller Followers in this section.
  1. NOTE: You must retime the LH and RH camshafts when either camshaft is disturbed.

Turn the crankshaft clockwise to position the number one cylinder at TDC.

  1. NOTE: The special tool must be installed on the damper and should contact the engine block, this positions the engine at top dead center (TDC).

Install the special tool.

  1. CAUTION: The right-hand camshaft sprocket bolt is a left-hand threaded bolt.

Using the special tool, loosen the RH camshaft sprocket bolt.

  1. NOTE: The camshaft timing slots are off-center.

Position the camshaft timing slots below the centerline of the camshaft to correctly fit the special tools and install the special tools on the front of the RH cylinder head.

  1. Raise and support the vehicle. For additional information, refer to Section 100-02 .
  1. Remove the RH wheel and tire. For additional information, refer to Section 204-04 .
  1. Remove the RH lower splash shield.

  1. Remove the RH camshaft tensioner.

  1. Lower the vehicle.
  1. NOTE: Leave the top two special tool clamp bolts loose.

Install the special tools on the rear of the RH cylinder head.

  1. Install the special tool.
  1. CAUTION: The right-hand camshaft sprocket bolt is a left-hand threaded bolt.

Tighten the bolts.

  1. Tighten the special tool top two clamp bolts to 10 Nm (89 lb-in).
  1. Tighten the camshaft bolt.
  1. Remove the special tool.
  1. Install the RH camshaft tensioner.
  1. Raise the vehicle.
  1. Install the RH lower splash shield.
  1. Install the RH wheel and tire. For additional information, refer to Section 204-04 .
  1. Lower the vehicle.
  1. Remove the special tools from the RH cylinder head.
  1. Remove the LH camshaft tensioner.
  1. Install the special tools on the front of the LH cylinder head and tighten the top two clamp bolts to 10 Nm (89 lb-in).
  1. Loosen the LH camshaft sprocket bolt.
  1. Loosen the top two clamp bolts on the special tool to allow the camshaft sprocket to rotate freely.
  1. NOTE: The camshaft timing slots are off-center.

Position the camshaft timing slots below the centerline of the camshaft to correctly fit the special tools, and install the special tools on the rear of the LH cylinder head.

  1. Install the special tool.
  1. Tighten the bolts.
  2. Tighten the special tool top two clamp bolts to 10 Nm (89 lb-in).
  3. Tighten the camshaft bolt.
  1. Remove the special tool.
  1. Install the LH camshaft tensioner.
  1. Remove all of the special tools.
  1. Install the roller followers. For additional information, refer to Roller Followers in this section.
  1. Install the thermostat housing. For additional information, refer to Section 303-03 .
  1. Install the accessory drive belt. For additional information, refer to Section 303-05 .
  1. Install the fuel supply manifold. For additional information, refer to Section 303-04 .
  1. Install the intake manifold. For additional information, refer to Intake Manifold in this section.
  1. Install the RH valve cover. For additional information, refer to Valve Cover—RH in this section.
  1. Install the LH valve cover. For additional information, refer to Valve Cover—LH in this section.