Ford Focus manuals

Ford Focus Service Manual: Cylinder Head - Engine - 2.0L - in Vehicle Repair

Ford Focus Service Manual / Powertrain / Engine / Engine Block / Cylinder Head / Cylinder Head - Engine - 2.0L - in Vehicle Repair

Special Tool(s)

Alignment Plate, Camshaft 303-465 (T94P-6256-CH)

Engine Support Bar 303-F072

Material
Item Specification
Motorcraft® Metal Surface Prep ZC-31-A
Motorcraft® SAE 5W-20 Premium Synthetic Blend Motor Oil (US); Motorcraft® SAE 5W-20 Super Premium Motor Oil (Canada) XO-5W20-QSP (US); CXO-5W20-LSP12 (Canada) WSS-M2C945-A
Motorcraft® Silicone Gasket and Sealant TA-30 WSE-M4G323-A4
Motorcraft® Silicone Gasket Remover ZC-30

Cylinder Head (View 1 of 2)


 
Item Part Number Description
1 W705443 Flexpipe-to-muffler and tailpipe assembly nut (2 required)
2 5G232 Flexpipe
3 9451 Flexpipe-to-muffler and tailpipe assembly gasket
4 W710512 Catalytic converter-to-engine support bracket bolt (2 required)
5 Catalytic converter support bracket bolt (part of 5K222) (2 required)
6 5K222 Catalytic converter support bracket
7 Catalytic converter heat shield bolt (part of 5K282) (4 required)
8 W503922 Catalytic converter heat shield bolt (2 required)
9 5K282 Catalytic converter heat shield
10 14A624 Heated Oxygen Sensor (HO2S) electrical connector (part of 12A690)
11 14A624 Catalyst Monitor Sensor (CMS) electrical connector (part of 12A690)
12 W703933 Catalytic converter nut (7 required)
13 5G232 Catalytic converter
14 9448 Catalytic converter gasket
15 W704474 Catalytic converter-to-cylinder head stud (7 required)



Cylinder Head (View 2 of 2)


 
Item Part Number Description
1 14A464 EGR valve electrical connector (part of 12B637)
2 8287 Upper radiator hose clamp
3 8260 Upper radiator hose
4 W52592 EGR coolant tube clamp
5 18K580 EGR coolant hose (part of heater hose)
6 Engine coolant vent hose clamp (part of 8W005)
7 8W005 Engine coolant vent hose
8 Heater hose clamp (part of 18K580)
9 18K580 Heater hose
10 W525958 Bypass hose clamp
11 8548 Bypass hose
12 W500204 Wiring harness bracket bolt (2 required)
13 14A301 Wiring harness bracket
14 6065 Cylinder head bolt (10 required)
15 6050 Cylinder head
16 6051 Cylinder head gasket

Removal

NOTICE: Do not loosen or remove the crankshaft pulley bolt without first installing the special tools as instructed in this procedure. The crankshaft pulley and the crankshaft timing sprocket are not keyed to the crankshaft. The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if the pulley bolt is loosened. Before any repair requiring loosening or removal of the crankshaft pulley bolt, the crankshaft and camshafts must be locked in place by the special service tools, otherwise severe engine damage can occur.

NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure.

  1. Release the fuel system pressure. For additional information, refer to Section  310-00.
  1. Depower the Supplemental Restraint System (SRS) . For additional information, refer to Section  501-20B.
  1. Remove the battery tray. For additional information, refer to Section  414-01.
  1. Drain the cooling system. For additional information, refer to Section  303-03.
  1. Check the valve clearance. For additional information, refer to Valve Clearance Check in this section.
  1. Remove the generator. For additional information, refer to Section  414-00.
  1. Remove the 2 nuts and disconnect the flex pipe from the muffler and tailpipe assembly.
    • Remove and discard the nuts and gasket.
  1. Remove the 2 bolts from the catalytic converter-to-engine support bracket.
  1. Remove the 2 bolts and the catalytic converter support bracket.
  1. NOTE:

    Mark the location of bolts for installation.

    Remove the 6 bolts and the catalytic converter heat shield.

  1. Disconnect the Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor (CMS) electrical connectors.
  1. Remove and discard the catalytic converter nuts.
    • Position aside the catalytic converter and support with mechanic's wire.
    • Remove and discard the catalytic converter gasket.
  1. Remove the engine oil filter and discard.

  1. Remove the fuel rail. For additional information, refer to Section  303-04.
  1. Remove the intake manifold. For additional information, refer to Intake Manifold in this section.
  1. Remove the timing drive components. For additional information, refer to Timing Drive Components in this section.
  1. Remove the Camshaft Alignment Plate.

  1. Mark the position of the camshaft lobes on the No. 1 cylinder for installation reference.

  1. NOTICE: Failure to follow the camshaft loosening procedure may result in damage to the camshafts.

    NOTE:

    Mark the location and orientation of each camshaft bearing cap.

    Remove the camshafts from the engine.
    • Loosen the camshaft bearing cap bolts, in sequence, one turn at a time.
    • Repeat the first step until all tension is released from the camshaft bearing caps.
    • Remove the camshaft bearing caps.
    • Remove the camshafts.

  1. NOTE:

    If the camshafts and valve tappets are to be reused, mark the location of the valve tappets to make sure they are assembled in their original positions.

    Remove the valve tappets.

  1. NOTE:

    The number on the valve tappets only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.

    Inspect the valve tappets. For additional information, refer to Section  303-00.

  1. Remove the 3 bolts and position the wiring harness and bracket aside.
  1. Disconnect the EGR valve electrical connector.
  1. Disconnect the coolant hoses from the coolant bypass.
  1. Disconnect the EGR coolant hose.
  1. Remove the 7 catalytic converter-to-cylinder head studs and discard.
  1. Lower the engine and remove the Engine Support Bar.
  1. Remove the 10 bolts and the cylinder head.
    • Discard the bolts.
  1. Remove and discard the head gasket.

Installation

  1. NOTICE: 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.

    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:

    If there is no residual gasket material present, metal surface prep can be used to clean and prepare the surfaces.

    Clean the cylinder head-to-cylinder block mating surface of both the cylinder head and the cylinder block in the following sequence.
    1. Remove any large deposits of silicone or gasket material with a plastic scraper.
    1. Apply silicone gasket remover, following package directions, and allow to set for several minutes.
    1. Remove the silicone gasket remover with a plastic scraper. A second application of silicone gasket remover may be required if residual traces of silicone or gasket material remain.
    1. Apply 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.
  1. Clean the cylinder head bolt holes in the cylinder block. Make sure all coolant, oil or other foreign material is removed.
  1. Support the cylinder head on a bench with the head gasket side up. Check the cylinder head distortion and the cylinder block distortion. For additional information, refer to Section  303-00.
  1. Apply silicone gasket and sealant to the locations shown.

  1. Install a new cylinder head gasket.
  1. 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 10 new bolts. Tighten the bolts in the sequence shown in 5 stages.

    • Stage 1: Tighten to 5 Nm (44 lb-in).
    • Stage 2: Tighten to 15 Nm (133 lb-in).
    • Stage 3: Tighten to 45 Nm (33 lb-ft).
    • Stage 4: Turn 90 degrees.
    • Stage 5: Turn an additional 90 degrees.

  1. Install the Engine Support Bar and raise the engine.

  1. Install the 7 new catalytic converter-to-cylinder head studs.
    • Tighten to 17 Nm (150 lb-in).
  1. Install the EGR coolant hose.
  1. Connect the coolant hoses onto the coolant bypass.
  1. Connect the EGR valve electrical connector.
  1. Position the wire harness bracket and install the 3 bolts.
    • Tighten to 10 Nm (89 lb-in).
  1. NOTE:

    Lubricate the valve tappets with clean engine oil.

    Install the valve tappets in their original positions.


  1. NOTICE: Install the camshafts with the alignment notches in the camshafts lined up so the camshaft alignment plate can be installed. Make sure the lobes on the No. 1 cylinder are in the same position at noted in the removal procedure. Failure to follow this procedure can cause severe damage to the valves and pistons.

    NOTE:

    Lubricate the camshaft journals and bearing caps with clean engine oil.

    Install the camshafts and bearing caps in their original location and orientation. Tighten the bearing caps in the sequence shown in 3 stages:
    • Stage 1: Tighten the camshaft bearing cap bolts, one turn at a time, until the cam is fully seated.
    • Stage 2: Tighten to 7 Nm (62 lb-in).
    • Stage 3: Tighten to 16 Nm (142 lb-in).

  1. Install the timing drive components. For additional information, refer to Timing Drive Components in this section.
  1. Install the intake manifold. For additional information, refer to Intake Manifold in this section.
  1. Install the fuel rail. For additional information, refer to Section  303-04.
  1. Clean and inspect the catalytic converter flange. For additional information, refer to exhaust manifold cleaning and inspection in Section  303-00.
  1. NOTICE: Failure to tighten the catalytic converter nuts to specification before installing the converter bracket bolts will cause the converter to develop an exhaust leak.

    NOTICE: Failure to tighten the catalytic converter nuts to specification a second time will cause the converter to develop an exhaust leak.

    Using a new gasket and 7 new nuts, install the catalytic converter and tighten in 2 stages in the sequence shown.
    • Stage 1: Tighten to 55 Nm (41 lb-ft).
    • Stage 2: Tighten to 55 Nm (41 lb-ft).

  1. Connect the HO2S and CMS electrical connectors.
  1. Install the catalytic converter heat shield and 6 bolts.
    • Tighten to 11 Nm (97 lb-in).
  1. Install the catalytic converter support bracket and the 2 bolts.
    • Tighten to 22 Nm (16 lb-ft).
  1. Install the 2 catalytic converter-to-engine support bracket bolts.
    • Tighten to 48 Nm (35 lb-ft).
  1. NOTE:

    Clean the mating surfaces of the muffler assembly and the flexpipe.

    Using a new gasket and 2 new nuts, connect the muffler and tailpipe assembly to the flexpipe.

    • Tighten to 48 Nm (35 lb-ft).
  1. Install the generator. For additional information, refer to Section  414-00.
  1. Install the battery tray. For additional information, refer to Section  414-01.
  1. Drain the engine oil.
    • Install the drain plug and tighten to 28 Nm (21 lb-ft).

  1. NOTE:

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

    Install a new engine oil filter.

    • Tighten the oil filter three-fourths turn after the oil filter gasket makes contact with the oil filter adapter.

  1. Fill the engine with clean engine oil.
  1. Fill and bleed the cooling system. For additional information, refer to Section  303-03.
  1. Repower the SRS . For additional information, refer to Section  501-20B.
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