Cylinder Head: Installation

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Observe all warnings or cautions and follow all application directions contained on the packaging of the silicone gasket remover and the metal surface prep.

NOTE: Clean the cylinder head bolt holes in the cylinder block. Make sure all coolant, oil or other foreign material is removed.

NOTE: If there is no residual gasket material present, metal surface prep can be used to clean and prepare the surfaces.
1. Remove any large deposits of silicone or gasket material with a plastic scraper.
2. Apply Motorcraft Silicone Gasket Remover following package directions, and allow to set for several minutes.
  Material
  
  : Motorcraft® Silicone Gasket Remover / ZC-30-A
3. Remove the Motorcraft Silicone Gasket Remover with a plastic scraper. A second application of Motorcraft Silicone Gasket Remover may be required if residual traces of silicone or gasket material remain.
  Material
  
  : Motorcraft® Silicone Gasket Remover / ZC-30-A
4. Apply Motorcraft Metal Surface Prep following package directions, to remove any traces of oil or coolant, and to prepare the surfaces to bond with the new gasket. Do not attempt to make the metal shiny. Some staining of the metal surfaces is normal.
  Material
  
  : Motorcraft® Metal Surface Prep Wipes / ZC-31-B
Clean and inspect the catalytic converter flange. Refer to: Exhaust Manifold Cleaning and Inspection .
Check the cylinder head distortion and the cylinder block distortion. Refer to: Cylinder Head Distortion . Refer to: Cylinder Block Distortion .
Install the new cylinder head gasket.

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NOTE: The cylinder head bolts are torque-to-yield and must not be reused. New cylinder head bolts must be installed.

Install the cylinder head and the new bolts and tighten in sequence shown in 5 stages.

Torque

:Stage 1: 62 lb.in (7 Nm) Stage 2: 133 lb.in (15 Nm) Stage 3: 26 lb.ft (35 Nm) Stage 4: 90° Stage 5: 135°

Fig 1: Cylinder Head Bolts Tightening Sequence
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NOTE: Install the 16 valve tappets in their original positions.

Lubricate with clean engine oil and install the valve tappets.

Material

: Motorcraft® SAE 5W-20 Synthetic Blend Motor Oil / XO-5W20-QSP (WSS-M2C945-A)

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Connect the coolant hoses to the coolant outlet, connect the ECT sensor electrical connector. Use the General Equipment: Hose Clamp Remover/Installer

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Attach the transfer case vent tube retainer.

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Install the engine support bar. Install Special Service Tool: 303-F072 Support Bar, Engine.

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Remove the floor jack and wooden block. Use the General Equipment: Wooden Block Use the General Equipment: Trolley Jack

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Install the ground wire and bolt on the cylinder head.
Torque

: 89 lb.in (10 Nm)

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Install the camshaft. Refer to: Camshaft .
Install the new exhaust manifold studbolts.
Torque

: 150 lb.in (17 Nm)

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NOTE: Failure to tighten the catalytic converter manifold nuts to specification a second time may cause the converter to develop an exhaust leak.

NOTE: Always install new fasteners and gaskets as indicated. Clean flange faces prior to new gasket installation to make sure of proper sealing.

Install new catalytic converter manifold-to-cylinder head nuts and tighten in 2 stages in sequence shown.

Torque

:Tighten:: 41 lb.ft (55 Nm) Retighten:: 41 lb.ft (55 Nm)

Fig 2: Exhaust Manifold Bolts Tightening Sequence
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Install the tailpipe mount bracket bolts.
Torque

: 18 lb.ft (25 Nm)

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Install the catalytic converter manifold-to-muffler and tailpipe nuts.
- Tighten the first nut.
  Torque
  
  : 35 lb.ft (48 Nm)
- Tighten the second nut.
  Torque
  
  : 35 lb.ft (48 Nm)
- Tighten the first nut to specification a second time.
  Torque
  
  : 35 lb.ft (48 Nm)
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Install the bolts for the exhaust manifold.
Torque

: 18 lb.ft (25 Nm)

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Install the exhaust manifold heat shield, and position back the catalyst monitor sensor wiring harness. Tighten the bolts.
Torque

: 89 lb.in (10 Nm)

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Connect the catalyst monitor sensor electrical connector and the retainer.

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Remove the oil pan drain bolt and drain the engine oil. Install the oil pan drain bolt.
Torque

: 20 lb.ft (27 Nm)

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NOTE: Lubricate the engine oil filter gasket with clean engine oil prior to installing the oil filter.

Install the new engine oil filter.

Material

: Motorcraft® SAE 5W-20 Synthetic Blend Motor Oil / XO-5W20-QSP (WSS-M2C945-A)

Torque

:Stage 1: 71 lb.in (8 Nm) Stage 2: 180°

Courtesy of FORD MOTOR COMPANY
Install the following items:
1. Install the HO2S. Refer to: Heated Oxygen Sensor (HO2S) .
2. Install the fuel injectors. Refer to: Fuel Injector .
Fill the cooling system, Refer to: Cooling System Draining, Vacuum Filling and Bleeding .
Fill the engine with clean engine oil.
Material

: Motorcraft® SAE 5W-20 Synthetic Blend Motor Oil / XO-5W20-QSP (WSS-M2C945-A)