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Eric
Eric, Automotive Repair Shop Manager
Category: Toyota
Satisfied Customers: 23974
Experience:  20+ yrs. experience as repair shop manager and technician.
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4cyl head to replace head gasket..timing chain..marks

Resolved Question:

want to remove 4cyl head to replace head gasket want to know the procedure.ex timing chain and marks
Submitted: 3 years ago.
Category: Toyota
Expert:  Eric replied 3 years ago.
Hi,

below are directions:


INTAKE MANIFOLD:
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Relieve the fuel pressure from the fuel lines.
  3. Drain the engine oil and cooling system.
  4. Remove or disconnect the following:

    Negative battery cable.
    Strut tower brace
    Radiator hose outlet
    Union to connector tube hose
    Water inlet water hose
    Fuel tube assembly
    Water bypass hoses from the throttle body
    Intake manifold and gasket

    Click image to see an enlarged view

    Fig. Intake manifold fastener location and loosening sequence-2.4L (2AZ-FE) engine



To install:

Click image to see an enlarged view

Fig. Intake manifold fastener tightening sequence-2.4L (2AZ-FE) engine



Intake manifold and gasket. Tighten to 22 ft. lbs. (30 Nm)
Water bypass hoses from the throttle body
Fuel tube assembly
Union to connector tube hose
Radiator hose outlet
Strut tower brace. Tighten to 59 ft. lbs. (80 Nm)
Negative battery cable

  1. Refill the engine with oil to the correct level.
  2. Refill the cooling system to the correct level.
  3. Start the engine and check for leaks.

EXHAUST MANIFOLD:
  1. efore servicing the vehicle, refer to the Precautions Section.
  2. Remove or disconnect the following:

    Negative battery terminal
    Exhaust manifold heat insulator
    Oxygen sensor
    Exhaust manifold converter stays
    Exhaust pipe-to-manifold fasteners
    Manifold nuts, manifold and gasket

    Click image to see an enlarged view

    Fig. Exhaust manifold converter stays-2.4L (2AZ-FE) engine



To install:

Click image to see an enlarged view

Fig. Exhaust manifold fastener tightening sequence-2.4L (2AZ-FE) engine

  1. Place a new gasket and reinstall the exhaust manifold with the nuts. Tighten to 27 ft. lbs. (33 Nm).
  2. Install or connect the following:

    Exhaust manifold converter stays. Tighten to 32 ft. lbs. (44 Nm)
    Oxygen sensor
    Exhaust manifold heat insulator
    Negative battery cable




CYLINDER HEAD:


  1. Before servicing the vehicle, refer to the Precautions section.
  2. Drain the engine oil.
  3. Drain the cooling system.
  4. Remove or disconnect the following:

    Negative battery cable.



NOTE
On vehicles equipped with an air bag, wait at least 90 seconds before proceeding after disconnecting the negative battery cable.



Radiator hose outlet
Union to connector tube hose
Heater inlet hose
Fuel tube assembly
Intake manifold
Intake manifold runner valve assembly
Engine harness
Intake and exhaust manifold insulators
Exhaust manifold assembly
Timing chain
Camshafts
Camshaft bearing No. 2
Camshaft oil control valve assembly
10 cylinder head bolts uniformly in the sequence
Cylinder head and gasket



Click image to see an enlarged view

Fig. Cylinder head bolt removal sequence-2AZ-FE engine


WARNING
Head warpage or cracking could result from removing the bolts in an incorrect order.

  1. Inspect the cylinder head set bolts. They should be 6.350-6.465 in. (161.3-164.2mm) in length. If length is greater than maximum, replace the bolts.


  2. Click image to see an enlarged view

    Fig. Measuring bolt length-2AZ-FE engine


To install:

  1. Install new head gasket
  2. Install cylinder head assembly

    Apply light oil to the cylinder head bolts
    Install plate washers on the cylinder head bolts



NOTE
Cylinder head bolts are tightened in two successive steps. Install and tighten 10 cylinder head bolts in required sequence.

  1. Tighten to 58 ft. lbs. (79 Nm)


  2. Click image to see an enlarged view

    Fig. Cylinder head bolt installation sequence-2AZ-FE engine

  3. Mark the front side of each head bolt with paint.


  4. Click image to see an enlarged view

    Fig. Head bolt marking procedure-2AZ-FE engine

  5. Retighten cylinder head bolts 90 degrees in the same sequence
  6. Check that each painted mark is now at a 90 degree angle to the front

  1. Install or connect the following:

    Camshaft oil control valve assembly
    Camshaft bearing No. 2
    Camshafts
    Timing chain
    Exhaust manifold assembly
    Intake and exhaust manifold insulators
    Engine harness
    Intake manifold runner valve assembly
    Intake manifold
    Fuel tube assembly
    Heater inlet hose
    Union to connector tube hose
    Radiator hose outlet
    Fill engine oil
    Fill engine coolant

  2. Inspect for fuel leaks
  3. Inspect for oil leaks
  4. Inspect for exhaust leaks


TIMING CHAIN:

2az-FE Engine



  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the engine oil.
  3. Remove or disconnect the following:

    Negative battery cable
    Hood
    Right-side front wheel
    Engine under covers
    Right-side fender apron seal
    Front exhaust pipe
    Engine moving control rod and bracket
    Right-side engine mounting stay and bracket
    Accessory drive belt
    Engine appearance cover
    Engine wire
    Alternator
    Power steering pump, leave the hoses connected
    Ignition coils
    Ventilation hoses
    Cylinder head cover

  4. Turn the crankshaft pulley to set the No. 1 cylinder to TDC compression. Align the groove on the pulley with the timing mark -0- on the front cover.
  5. Remove the crankshaft pulley as follows:
    1. TMC made: Use Special Tool 09213-54015 to hold the pulley to loosen the bolt. Use Special Tool 09950-50013 to remove the bolt and pulley.
    2. TMMK made: Use Special Tool 09960-10010 to hold the pulley to remove the bolt. Use Special Tool 09950-40011 to remove the crankshaft pulley

      Click image to see an enlarged view

      Fig. Removing the crankshaft pulley-TMC-2.4L (2AZ-FE) engine



      Click image to see an enlarged view

      Fig. Removing the crankshaft pulley-TMMK-2.4L (2AZ-FE) engine


  6. Remove or disconnect the following:

    Crankshaft position sensor
    Lower oil pan
    No. 1 chain tensioner
    Accessory drive belt tensioner

  7. Support the engine with a suitable engine lifting device.
  8. Remove or disconnect the following:

    Engine mounting insulators
    Right-side engine mounting bracket
    Stud bolt for the accessory drive belt tensioner from the block
    Front cover mounting bolts and nuts
    Front cover
    Crankshaft position sensor plate
    Timing chain tensioner slipper
    Timing chain vibration damper
    Timing chain
    Crankshaft timing sprocket

  9. Turn the crankshaft counterclockwise by 90°, and align an adjusting hole of the oil pump driven sprocket with the groove of the oil pump.

    Click image to see an enlarged view

    Fig. Align the adjusting hole of the oil pump drive sprocket with the oil pump groove-2.4L (2AZ-FE) engine



    Click image to see an enlarged view

    Fig. Insert a bar to lock the sprocket in position-2.4L (2AZ-FE) engine

  10. Put a bar in the adjusting hole of the oil pump driven sprocket to temporarily lock the sprocket in position. Remove the nut.
  11. Remove the bolt, chain tensioner and spring.
  12. Remove the chain tensioner, oil pump sprocket and No. 2 timing chain.

To install:

  1. Set the crankshaft key into the left horizontal position. Turn the cutout of the drive shaft to the top.

    Click image to see an enlarged view

    Fig. Align the crankshaft key and drive shaft cutout as shown for installation-2.4L (2AZ-FE) engine

  2. Align the yellow colored links with the timing marks of the sprocket as shown in the illustration.
  3. Insert the sprockets with chain to the crankshaft and oil pump shaft.
  4. Temporarily tighten the oil pump driven sprocket with the nut.
  5. Insert the damper spring into the adjusting hole, and install the chain tensioner plate with the nut. Tighten to 9 ft. lbs. (12 Nm).
  6. Align the adjusting hole of the oil pump driven sprocket with the groove of the oil pump.
  7. Put a bar in the adjusting hole of the oil pump driven sprocket to temporarily lock the sprocket in position. Tighten the nut to 22 ft. lbs. (30 Nm).
  8. Rotate the crankshaft counterclockwise by 90°, and align the crankshaft key to the top.
  9. Install the timing chain vibration damper. Tighten to 80 inch lbs. (9 Nm).
  10. Align the timing marks of the camshaft timing sprockets and bearing caps.
  11. Using the crankshaft pulley bolt, turn the crankshaft and set the set key on the crankshaft upward.
  12. Align the gold or orange colored link with the timing mark of the crankshaft timing sprocket.
  13. Using Special Tool 09309-37010, tap in the sprocket.
  14. Align the gold or yellow colored links with the timing marks of the camshaft timing gear and camshaft timing sprocket. Install the chain.

    Click image to see an enlarged view

    Fig. Align the marks of the sprockets and bearing caps to set the No. 1 cylinder at TDC-2.4L (2AZ-FE) engine



    Click image to see an enlarged view

    Fig. Set the crankshaft set key facing upward-2.4L (2AZ-FE) engine



    Click image to see an enlarged view

    Fig. Align the marked link of the timing chain with crankshaft sprocket timing mark-2.4L (2AZ-FE) engine



    Click image to see an enlarged view

    Fig. Tap the crankshaft sprocket in with Special Tool 09309-37010-2.4L (2AZ-FE) engine



    Click image to see an enlarged view

    Fig. Align the marked links of the timing chain with the camshaft sprockets during installation-2.4L (2AZ-FE) engine

  15. Install the timing chain tensioner slipper. Tighten to 14 ft. lbs. (19 Nm).
  16. Install the crankshaft position sensor plate. The -F- mark faces forward.
  17. Clean any old gasket material from the mating surfaces of the front cover, cylinder head and block.
  18. Apply a continuous bead of sealant to the front cover mating surface either 0.10 in. (2.5 mm) or 0.12-0.16 (3-4 mm) in diameter as indicated in the illustration.

    Click image to see an enlarged view

    Fig. Apply sealant to the front cover mating surface as shown-2.4L (2AZ-FE) engine

  19. Install the front cover and tighten as follows:
    1. Bolt A and nuts: 80 inch lbs. (9 Nm).
    2. Bolts B: 15 ft. lbs. (21 Nm).
    3. Bolts C: 32 ft. lbs. (43 Nm).

      Click image to see an enlarged view

      Fig. Bolt and nut identification for the front cover-2.4L (2AZ-FE) engine


  20. Install or connect the following:

    Stud bolt for the accessory drive belt. Tighten to 7 ft. lbs. (10 Nm).
    Accessory drive belt tensioner. Tighten to 44 ft. lbs. (60 Nm).
    Right-hand engine mounting bracket. Tighten to 40 ft. lbs. (54 Nm).
    Engine mounting insulator. Tighten top bolt to 70 ft. lbs. (95 Nm) and bottom bolts to 64 ft. lbs. (87 Nm).
    Lower oil pan. Tighten bolts to 80 inch lbs. (9 Nm).
    Timing chain tensioner
    Crankshaft position sensor. Tighten to 80 inch lbs. (9 Nm).

  21. Align the crankshaft pulley key set with the key groove of the pulley, and side on the pulley. Using the Special Tool previous used to remove, tighten the crankshaft pulley bolt to 125 ft. lbs. (170 Nm).
  22. Turn the crankshaft counterclockwise and disconnect the plunger knock pin from the hook.
  23. Turn the crankshaft clockwise and check that the slipper is pushed by the plunger.
  24. The remainder of the installation is the reverse order of removal.
  25. Refill the engine with oil to the correct level.
  26. Start the engine and check for leaks.
Expert:  Eric replied 3 years ago.
hI,


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Customer: replied 3 years ago.
lost the answer and want to talk to an expert
Expert:  Eric replied 3 years ago.
Hi,

do you need the directions again?
Eric, Automotive Repair Shop Manager
Category: Toyota
Satisfied Customers: 23974
Experience: 20+ yrs. experience as repair shop manager and technician.
Eric and other Toyota Specialists are ready to help you

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