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Cylinder Head Removal on Dodge Dakota 3.7L Engine?

The complete details for replacing cylinder head on dodge dakota 3.7L Engine models.

The procedure with required details and Helpful Diagrams are as follows: --------


Removal & Installation



3.7L Engine
Left Side
  1. Before servicing the vehicle, refer to the precautions section.
  2. Drain the cooling system.
  3. Properly relieve the fuel system pressure.
  4. Remove or disconnect the following:

    Negative battery cable
    Exhaust Y-pipe
    Intake manifold
    Cylinder head cover
    Engine cooling fan and shroud
    Accessory drive belt
    Power steering pump
  5. Rotate the crankshaft so that the crankshaft timing mark aligns with the Top Dead Center (TDC) mark on the front cover, and the V6 marks on the camshaft sprockets are at 12 o-clock as shown. 

    Crankshaft damper
    Front cover 

    image 
    Fig. Camshaft sprocket timing marks-3.7L
  6. Lock the secondary timing chain to the idler sprocket with Timing Chain Locking tool 8429. 

    image
    Fig. Camshaft locking tool-3.7L
  7. Matchmark the secondary timing chain one link on each side of the V6 mark to the camshaft sprocket.
    NOTE
    The cylinder head is retained by twelve bolts. Four of the bolts are smaller and are at the front of the head.



    Left secondary timing chain tensioner
    Cylinder head access plug
    Secondary timing chain guide
    Camshaft sprocket
    Cylinder head
To install:
Click image to see an enlarged view
Fig. Examine the head bolts for signs of stretching-3.7L engine
  1. Check the cylinder head bolts for signs of stretching and replace as necessary.
  2. Lubricate the threads of the 11mm bolts with clean engine oil.
  3. Coat the threads of the 8mm bolts with Mopar® Lock and Seal Adhesive, or equivalent.
  4. Install the cylinder heads. Use new gaskets and tighten the bolts, in sequence, as follows:
    1. Step 1: Bolts 1-8 to 20 ft. lbs. (27 Nm)
    2. Step 2: Bolts 1-10 verify torque without loosening
    3. Step 3: Bolts 9-12 to 10 ft. lbs. (14 Nm)
    4. Step 4: Bolts 1-8 plus 1 / 4 (90 degree) turn
    5. Step 5: Bolts 1-8 plus 1 / 4 (90 degree) turn again
    6. Step 6: Bolts 9-12 to 19 ft. lbs. (26 Nm)

      Click image to see an enlarged view
      Fig. Cylinder head bolt torque sequence-3.7L
  5. Install or connect the following:

    Camshaft sprocket. Align the secondary chain matchmarks and tighten the bolt to 90 ft. lbs. (122 Nm).
    Secondary timing chain guide
    Cylinder head access plug
    Secondary timing chain tensioner. Refer to the timing chain procedure in this section.
  6. Remove the Timing Chain Locking tool.
  7. Install or connect the following:

    Front cover
    Crankshaft damper. Torque the bolt to 130 ft. lbs. (175 Nm).
    Power steering pump
    Accessory drive belt
    Engine cooling fan and shroud
    Cover
    Intake manifold
    Exhaust Y-pipe
    Negative battery cable
  8. Fill and bleed the cooling system.
  9. Start the engine, check for leaks and repair if necessary.
Right Side
  1. Before servicing the vehicle, refer to the precautions section.
  2. Drain the cooling system.
  3. Properly relieve the fuel system pressure.
  4. Remove or disconnect the following:

    Negative battery cable
    Exhaust Y-pipe
    Intake manifold
    Valve cover
    Engine cooling fan and shroud
    Accessory drive belt
    Oil fill housing
    Power steering pump
  5. Rotate the crankshaft so that the crankshaft timing mark aligns with the Top Dead Center (TDC) mark on the front cover, and the V6 marks on the camshaft sprockets are at 12 o-clock as shown. 

    Click image to see an enlarged view
    Fig. Crankshaft timing marks-3.7L engine


    Click image to see an enlarged view
    Fig. Camshaft positioning-3.7L engine
  6. Remove or disconnect the following:

    Crankshaft damper
    Front cover
  7. Lock the secondary timing chains to the idler sprocket with Timing Chain Locking tool 8429.
  8. Matchmark the secondary timing chains to the camshaft sprockets.
  9. Remove or disconnect the following:
    NOTE
    Each cylinder head is retained by eight 11mm bolts and four 8mm bolts.



    Secondary timing chain tensioners
    Cylinder head access plugs
    Secondary timing chain guides
    Camshaft sprockets
    Cylinder heads


To install:
  1. Check the cylinder head bolts for signs of stretching and replace as necessary.
  2. Lubricate the threads of the 11mm bolts with clean engine oil.
  3. Coat the threads of the 8mm bolts with Mopar® Lock and Seal Adhesive, or equivalent.
  4. Install the cylinder heads. Use new gaskets and tighten the bolts, in sequence, as follows:
    1. Step 1: Bolts 1-8 to 20 ft. lbs. (27 Nm)
    2. Step 2: Bolts 1-10 verify torque without loosening
    3. Step 3: Bolts 9-12 to 10 ft. lbs. (14 Nm)
    4. Step 4: Bolts 1-8 plus 1 / 4 (90 degree) turn
    5. Step 5: Bolts 9-12 to 19 ft. lbs. (26 Nm)
  5. Install or connect the following:

    Camshaft sprockets. Align the secondary chain matchmarks and tighten the bolts to 90 ft. lbs. (122 Nm).
    Secondary timing chain guides
    Cylinder head access plugs
    Secondary timing chain tensioners. Refer to the timing chain procedure in this section.
  6. Remove the Timing Chain Locking tool.
  7. Install or connect the following:

    Front cover
    Crankshaft damper. Torque the bolt to 130 ft. lbs. (175 Nm).
    Rocker arms
    Power steering pump
    Oil fill housing
    Accessory drive belt
    Engine cooling fan and shroud
    Valve covers
    Intake manifold
    Exhaust Y-pipe
    Negative battery cable
  8. Fill and bleed the cooling system.
  9. Start the engine, check for leaks and repair if necessary.



These details will help.
Thanks.           

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html


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