Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2010MOUNTAINEER AWD V6-4.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLY
2010 Mercury Mountaineer AWD V6-4.0L
Cylinder Head Assembly
2010 Mercury Mountaineer AWD V6-4.0LSECTION Cylinder Head Assembly
Cylinder Head
RH
Install the RH cylinder head. Install 8 new 12-mm bolts and tighten in the sequence shown in 2 stages.
Stage 1: Tighten to 12 Nm (106 lb-in).
Stage 2: Tighten to 25 Nm (18 lb-ft).
Install 2 new 8-mm bolts.
Tighten to 32 Nm (24 lb-ft).
Tighten the 8 new 12-mm bolts in the sequence shown in 2 stages.
Stage 1: Rotate 90 degrees.
Stage 2: Rotate an additional 90 degrees.
LH
Install the LH cylinder head and tighten the 8 new 12-mm bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 12 Nm (106 lb-in).
Stage 2: Tighten to 25 Nm (18 lb-ft).
Install 2 new 8-mm bolts.
Tighten to 32 Nm (24 lb-ft).
Tighten the 8 new 12-mm bolts in the sequence shown in 2 stages.
Stage 1: Rotate 90 degrees.
Stage 2: Rotate an additional 90 degrees.
Bolt re-usability
NOTE: New cylinder head bolts must be installed. They are a torque-to-yield design and cannot be reused.
Surface Variation -- Head-to-block, Head-to-manifolds And Surface Variation -- Warpage
Camshaft Bearing Cap
Tighten the bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 6 Nm (53 lb-in).
Stage 2: Tighten to 16 Nm (142 lb-in).
Intake Manifold Specifications
Exhaust Manifold Specifications
Camshaft Gear/Sprocket Specifications
RH
Install the RH cylinder head. Install 8 new 12-mm bolts and tighten in the sequence shown in 2 stages.
Stage 1: Tighten to 12 Nm (106 lb-in).
Stage 2: Tighten to 25 Nm (18 lb-ft).
Install 2 new 8-mm bolts.
Tighten to 32 Nm (24 lb-ft).
Tighten the 8 new 12-mm bolts in the sequence shown in 2 stages.
Stage 1: Rotate 90 degrees.
Stage 2: Rotate an additional 90 degrees.
LH
Install the LH cylinder head and tighten the 8 new 12-mm bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 12 Nm (106 lb-in).
Stage 2: Tighten to 25 Nm (18 lb-ft).
Install 2 new 8-mm bolts.
Tighten to 32 Nm (24 lb-ft).
Tighten the 8 new 12-mm bolts in the sequence shown in 2 stages.
Stage 1: Rotate 90 degrees.
Stage 2: Rotate an additional 90 degrees.
Bolt re-usability
NOTE: New cylinder head bolts must be installed. They are a torque-to-yield design and cannot be reused.
Surface Variation -- Head-to-block, Head-to-manifolds And Surface Variation -- Warpage
Camshaft Bearing Cap
Tighten the bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 6 Nm (53 lb-in).
Stage 2: Tighten to 16 Nm (142 lb-in).
Intake Manifold Specifications
Exhaust Manifold Specifications
Camshaft Gear/Sprocket Specifications
RENDER: 1.0x
NO RELATED
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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.