Step by step procedure to remove cylinder head on ford explorer?

Cylinder Head 4

Removal & Installation

4.6L Engine
SOHC Engine
VIN W

1. Before servicing the vehicle, please familiarize yourself with safety procedures.
2. Drain the cooling system.
3. Remove or disconnect the following:
   
   NOTE

   The cylinder head bolts must be discarded with new bolts installed. They are tighten-to-yield designed and cannot be reused. Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to remove all traces of the head gasket.
   
   
   
   
   Negative battery cable

   Intake manifold

   Timing chains

   Exhaust manifolds

   Water heater tube back and remove. Discard the O-ring seal.
   
   
   
   
   Bolts and the right cylinder head

   Bolts and the left cylinder head
   
   
4. Installation is the reverse of removal. Observe the following notes and torques:
   1. Install the cylinder head on the head gasket and loosely install the bolts.
      
      
      

      

      Fig. Left cylinder head bolt torque sequence 4.6L SOHC Engine

      
      
      
      

      

      Fig. Right cylinder head bolt torque sequence 4.6L SOHC Engine

   2. Make sure to tighten the bolts in sequence in six stages.
      
      
      Step 1: Tighten to 30 ft. lbs. (40 Nm).

      Step 2: Tighten an additional 85-95 degrees.

      Step 3: Back out all bolts one full turn (360 degrees).

      Step 4: Tighten to 30 ft. lbs. (40 Nm).

      Step 5: Tighten an additional 85-95 degrees.

      Step 6: Tighten an additional 85-95 degrees.
      
      
   3. Install a new O-ring seal and position the water heater tube forward. Lubricate the O-ring seal with premium engine coolant.
      
      
      

      

      Fig. Tighten valve cover bolts in the sequence shown-4.6L SOHC Engine

   
   

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Drain the cooling system.
3. Remove or disconnect the following:
   
   NOTE

   The cylinder head bolts must be discarded with new bolts installed. They are tighten-to-yield designed and cannot be reused. Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to remove all traces of the head gasket.
   
   
   
   
   Negative battery cable

   Intake manifold

   Timing chains

   Exhaust manifolds

   Water heater tube back and remove. Discard the O-ring seal.
   
   
   
   
   Bolts and the RH cylinder head

   Bolts and the LH cylinder head
   
   
4. Installation is the reverse of removal. Observe the following notes and torques:
   1. Install the cylinder head on the head gasket and loosely install the bolts.
      
      
      

      

      Fig. Left cylinder head bolt torque sequence 4.6L engine

      
      
      
      

      

      Fig. Right cylinder head bolt torque sequence 4.6L engine

   2. Make sure to tighten the bolts in sequence in six stages.
      
      
      Step 1: Tighten to 40 Nm (30 ft. lbs.).

      Step 2: Tighten an additional 85-95 degrees.

      Step 3: Back out all bolts one full turn (360 degrees).

      Step 4: Tighten to 40 Nm (30 ft. lbs.).

      Step 5: Tighten an additional 85-95 degrees.

      Step 6: Tighten an additional 85-95 degrees.
      
      
   3. Install a new O-ring seal and position the water heater tube forward. Lubricate the O-ring seal with premium engine coolant.
      
      
      

      

      Fig. Tighten valve cover bolts in the sequence shown-4.6L engine

   
   

1. Before servicing the vehicle, refer to the -Precautions- section.
   
   NOTE

   Clean all mating surfaces as components are removed during this procedure.
   
   
2. Remove the engine. See -Engine Assembly- section.
3. Transfer the engine to a proper workstand.
4. Remove or disconnect the following for access to the cylinder heads:
   
   
   Flexplate and spacer plate

   Accessory drive belt

   Wiring harness bracket behind the crankshaft pulley

   Power steering hose support bracket

   Hoses from the power steering pump

   Power steering pump
   
   

   

   

   Fig. Remove the radio interference capacitor and ground wire and position out of the way-2005 4.6L (VIN W) SOHC engine

   Radio interference capacitor and ground wire from cylinder head

   Power steering reservoir and bracket

   A/C compressor and CKP sensor electrical connectors

   Wiring harness retainers

   A/C tube retainers

   Crankcase air inlet tube

   Upper radiator hose bracket

   Radio interference capacitor (set aside)

   3 idler pulleys
   
   

   

   

   Fig. Remove the 3 idler pulleys-2005 4.6L (VIN W) SOHC engine

   Alternator

   CMP sensor

   Water pump pulley

   EGR tube from across the engine

   RH and LH exhaust manifolds; see -Exhaust Manifold- in this section

   Oil dipstick tube

   Brake booster vacuum hose

   Throttle position sensor and throttle body connectors
   
   

   

   

   Fig. Remove the throttle position sensor and throttle body connectors-2005 4.6L (VIN W) SOHC engine

   PCV tube and crankcase tube from throttle body adapter

   EGR module and fuel pressure sensor vacuum connections
   
   

   

   

   Fig. Remove the EGR module and fuel pressure sensor vacuum connections-2005 4.6L (VIN W) SOHC engine

   EGR module and fuel pressure sensor electrical connections

   Cylinder head temperature (CHT) sensor connector

   Knock sensor connector and wiring harness retainer

   All coolant hoses from the engine

   Electronic throttle body and gasket

   Fuel injectors, ignition coil and ground connections, and wiring harness from both heads

   Ground wire from the manifold

   All remaining wiring harness connections

   8 ignition coils

   Thermostat housing

   Intake manifold and gaskets

   Engine mounts

   Cylinder block drain plugs; reinstall after coolant is drained

   Valve covers

   Spark plugs

   Crankshaft pulley

   Crankshaft front oil seal

   Oil pan

   Engine front cover and gaskets

   Crankshaft sensor ring

   Camshaft roller followers; see -Rocker Arms/Shafts (Camshaft Roller Followers)- section

   Both timing chains and guides; see -Timing Chain and Sprockets- section
   
   
5. Install lifting handles on each end of the cylinder head.
   
   
   

   

   Fig. Install lifting handles on each end of the cylinder head-2005 4.6L (VIN W) SOHC engine

6. Remove the hydraulic lash adjusters.
7. Remove the coolant tube from between the heads.
8. Remove the cylinder head bolts, cylinder heads and gaskets.
9. Carefully clean all cylinder head mating surfaces and bolt holes.

To install:

1. Carefully clean all cylinder head mating surfaces and bolt holes.
2. Use a straightedge to check the cylinder head surface flatness. Any distortion must be within 0.0004 in. (0.010 mm) from end to end.
3. Inspect the areas shown for any signs of wear, corrosion or deep scratches.
   
   
   

   

   Fig. Inspect the areas shown for any signs of wear, corrosion or deep scratches-2005 4.6L (VIN W) SOHC engine

   
   
   
   

   

   Fig. Left cylinder head bolt torque sequence-2005 4.6L (VIN W) SOHC engine

   
   
   
   

   

   Fig. Right cylinder head bolt torque sequence-2005 4.6L (VIN W) SOHC engine

4. Install new cylinder head gaskets over the mounting dowels on the block.
5. Install the cylinder and new bolts. Tighten the bolts, in sequence, in six stages.
   
   
   Step 1: Tighten to 30 ft. lbs. (40 Nm).

   Step 2: Tighten an additional 90 degrees.

   Step 3: Back out all bolts one full turn (360 degrees).

   Step 4: Tighten to 30 ft. lbs. (40 Nm).

   Step 5: Tighten an additional 90 degrees.

   Step 6: Tighten an additional 90 degrees.
   
   
6. Lubricate and install the hydraulic lash adjusters.
7. Install or connect the following:
   
   WARNING

   During these procedures, rotate the crankshaft counterclockwise ONLY, and only to the proper position or piston damage will occur. (See -Timing Chain and Sprocket- section.)
   
   
   
   
   RH exhaust manifold; see -Exhaust Manifold- section

   RH exhaust manifold heat shield

   Coolant tube between cylinder heads; install new, lubricated O-rings if needed; torque the nut to 89 inch lbs. (10 Nm)

   Oil dipstick tube

   LH exhaust manifold; see -Exhaust Manifold- section

   LH exhaust manifold heat shield

   Timing chain guides, timing chains and sprockets; see -Timing Chain and Sprocket- section
   
   
   
   
   Crankshaft sensor ring onto the crankshaft
   
   
8. Apply a 0.32 in. (8 mm) bead of sealant at the points where the cylinder heads meet the block at the vertical front end of the engine.
   
   
   

   

   Fig. Apply a 0.32 in. (8 mm) bead of sealant at the points where the cylinder heads meet the block at the vertical front end of the engine-2005 4.6L (VIN W) SOHC engine

9. Install new gaskets and the front cover. See -Timing Chain Cover and Seal- section.
10. Install or connect the following:
    
    
    New crankshaft front oil seal and crankshaft pulley; see -Crankshaft Front Seal- section

    Camshaft roller followers; see -Rocker Arms/Shafts (Camshaft Roller Followers)- section

    Spark plugs

    Valve covers; see -Valve Covers- section

    RH engine support bracket and bolts; torque the bolts to 53 ft. lbs. (72 Nm)

    Intake manifold; see -Intake Manifold- section

    Thermostat housing, with new O-ring; torque the bolts to 18 ft. lbs. (25 Nm)

    Ignition coils, with dielectric grease inside the boots; torque the bolts to 53 inch lbs. (6 Nm)

    Engine wiring harnesses

    Engine ground wire

    Wiring harnesses to retainers

    LH and RH fuel injectors and coil-on-plug electrical connectors; attach to wiring retainers

    Throttle body adapter plate

    All coolant hoses

    KS and CHT electrical connectors

    EGR system module and fuel pressure sensor electrical connectors and vacuum connectors

    Brake booster vacuum hose and bolt

    EGR tube; tighten the fitting to 30 ft. lbs. (40 Nm)

    Water pump pulley

    CMP sensor connector

    Alternator; see -Alternator- section

    3 idler pulleys; torque the bolts to 18 ft. lbs. (25 Nm)

    Bracket on top of the alternator

    Upper radiator hose support bracket and radio interference capacitor

    Crankcase air inlet tube

    A/C compressor and CKP sensor electrical connectors

    Power steering reservoir bracket, radio interference capacitor, and ground cable

    Power steering pump; torque the bolts to 15 ft. lbs. (20 Nm)

    Hoses to power steering pump; new seal in pressure hose fitting; tighten hose fittings to 48 ft. lbs. (65 Nm)

    Power steering hose support bracket

    Oil pressure sensor connector

    Wiring harness bracket behind crankshaft pulley

    Accessory drive belt
    
    
11. Install the engine. See -Engine Assembly- section.
12. Refill all fluids. Check for any leaks.

5.0L Engine

1. Before servicing the vehicle, refer to the Precautions section.
2. Drain the cooling system.
3. Remove or disconnect the following:
   
   
   Negative battery cable

   Lower intake manifold

   Valve cover

   Matchmark the rocker arms and push rods to ease installation and remove the rocker arm fulcrums

   Rocker arms and fulcrum guides

   Exhaust manifold

   A/C compressor and power steering bracket, left side cylinder head only

   Alternator electrical connectors, right side cylinder head only

   Transmission oil fill tube from the rear of the right side cylinder head

   Push rods and make certain to matchmark them

   Cylinder head and discard the gasket
   
   

To install:

1. Thoroughly clean all the gasket mating surfaces.
2. Position a new cylinder head gasket to the engine block, then install the cylinder head.
   
   
   

   

   Fig. Cylinder head bolt torque sequence 5.0L engine

3. Install new cylinder head bolts, and torque in 3 steps:
   
   
   
   
   1. Step 1: 30 ft. lbs. (40 Nm).
   2. Step 2: 50 ft. lbs. (68 Nm).
   3. Step 3: Plus an additional 90 degrees.

   
   
4. Install or connect the following:
   
   
   Lubricate and install the push rods in their original positions

   Rocker arms and fulcrum guides

   Rocker arm fulcrums. Torque the bolts to 25 ft. lbs. (34 Nm).

   Valve cover

   Transmission oil fill tube. Torque the bolt to 25 ft. lbs. (34 Nm).

   Alternator bracket, if removed. Torque the bolts to 48 ft. lbs. (65 Nm).

   Alternator electrical connectors, if removed

   Exhaust manifold

   Lower intake manifold

   Negative battery cable
   
   
5. Fill the cooling system
6. Fill the engine with clean oil and replace the filter.
7. Start the engine and check for leaks, repair if necessary.

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Drain the cooling system.
3. Remove or disconnect the following:
   
   
   Negative battery cable

   Lower intake manifold

   Valve cover

   Matchmark the rocker arms and push rods to ease installation and remove the rocker arm fulcrums

   Rocker arms and fulcrum guides

   Exhaust manifold

   A/C compressor and power steering bracket, left side cylinder head only

   Alternator electrical connectors, right side cylinder head only

   Transmission oil fill tube from the rear of the right side cylinder head

   Push rods and make certain to matchmark them

   Cylinder head and discard the gasket
   
   

To install:

1. Thoroughly clean all the gasket mating surfaces.
2. Position a new cylinder head gasket to the engine block, then install the cylinder head.
   
   
   

   

   Fig. Cylinder head bolt torque sequence 5.0L engine

3. Install new cylinder head bolts, and torque in 3 steps:
   
   
   
   
   1. Step 1: 30 ft. lbs. (40 Nm).
   2. Step 2: 50 ft. lbs. (68 Nm).
   3. Step 3: Plus an additional 90 degrees.

   
   
4. Install or connect the following:
   
   
   Lubricate and install the push rods in their original positions

   Rocker arms and fulcrum guides

   Rocker arm fulcrums. Torque the bolts to 25 ft. lbs. (34 Nm).

   Valve cover

   Transmission oil fill tube. Torque the bolt to 25 ft. lbs. (34 Nm).

   Alternator bracket, if removed. Torque the bolts to 48 ft. lbs. (65 Nm).

   Alternator electrical connectors, if removed

   Exhaust manifold

   Lower intake manifold

   Negative battery cable
   
   
5. Fill the cooling system
6. Fill the engine with clean oil and replace the filter.
7. Start the engine and check for leaks, repair if necessary.

--------------