Timing Component Alignment Marks: Locations

2010 Mercury Mountaineer 2WD V6-4.0LSECTION Locations



Timing Chain Alignment

NOTE: The LH and RH camshafts must be retimed when either camshaft is disturbed.

Turn the crankshaft clockwise to position the No. 1 cylinder at Top Dead Center (TDC).

NOTICE: Do not rotate the engine counterclockwise. Rotating the engine counterclockwise will result in damage to the damper crankshaft sensor speed wheel and incorrect timing of the engine.

NOTE: The Crankshaft TDC Timing Tool must be installed on the damper and should contact the engine block. This positions the engine at TDC.

Install the Crankshaft TDC Timing Tool.





Install the Camshaft Sprocket Holding Tool and the Adapter for 303-564 to the RH cylinder head and tighten the 2 top clamp bolts to 10 Nm (89 lb-in).





NOTICE: The RH camshaft sprocket bolt is a LH-threaded bolt. Turning the bolt in the wrong direction can damage the bolt.

Using the Torque Wrench Extension with the Camshaft Sprocket Nut Socket 303-565, loosen the RH camshaft sprocket bolt.





Loosen the top 2 Camshaft Sprocket Holding Tool clamp bolts.





NOTE: The camshaft timing slots are off-center.

Position the camshaft timing slots below the centerline of the camshaft and install the Camshaft Holding Tool and the Adapter for 303-577 on the front of the RH cylinder head.





NOTICE: The RH camshaft sprocket bolt is a LH-threaded bolt. Turning the bolt in the wrong direction can damage the bolt.

Tighten the bolts.

Tighten the Camshaft Sprocket Holding Tool top 2 clamp bolts to 10 Nm (89 lb-in).

Calculate the correct torque wrench setting for the following torque.

Using the Torque Wrench Extension with the Camshaft Sprocket Nut Socket 303-565, tighten the camshaft bolt to 85 Nm (63 lb-ft).





Remove the Camshaft Holding Tool, the Adapter for 303-577, the Camshaft Sprocket Holding Tool and the Adapter for 303-564 from the RH cylinder head.

Install the Camshaft Sprocket Holding Tool and the Adapter for 303-564 on the front of the LH cylinder head and tighten the top 2 clamp bolts to 10 Nm (89 lb-in).





Loosen the LH camshaft sprocket bolt.





Loosen the top 2 clamp bolts on the Camshaft Sprocket Holding Tool to allow the camshaft sprocket to rotate freely.





NOTE: The camshaft timing slots are off-center.

Position the camshaft timing slots below the centerline of the camshaft and install the Camshaft Holding Tool and the Adapter for 303-577 on the rear of the LH cylinder head.





Tighten the bolts.

Tighten the Camshaft Sprocket Holding Tool top 2 clamp bolts to 10 Nm (89 lb-in).

Tighten the LH camshaft bolt to 85 Nm (63 lb-ft).





Remove the Camshaft Holding Tool, the Adapter for 303-577, the Camshaft Sprocket Holding Tool and the Adapter for 303-564 from the LH cylinder head.

Remove the Crankshaft TDC Timing Tool.




RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.