Cylinder Head Removal on Chrysler And Dodge?

Chrysler Aspen and Dodge Durango Cylinder head replacing.
The complete procedure to replace Cylinder head for 3.7L Engine model.

Both Left and Right side Cylinder head removal.

3.7L Engine
Left Side

1. Drain the cooling system.
2. Properly relieve the fuel system pressure.
3. 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
4. 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 
   
    
   

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

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)
      
      
      

      

      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, please familiarize yourself with safety procedures.
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. 
   
   
   

   

   Fig. Crankshaft timing marks-3.7L engine
   
   
   
   

   

   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.

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

4.7L Engine
Left Side AND Right side Cylinder head removal:---

1. Drain the cooling system.
2. Remove or disconnect the following:
   
   
   Negative battery cable

   Exhaust pipe

   Intake manifold

   Cylinder head cover

   Fan shroud and fan

   Accessory drive belt

   Power steering pump
3. Rotate the crankshaft until the damper mark is aligned with the TDC mark. Verify that the V8 mark on the camshaft sprocket is at the 12 o-clock position.
4. Remove or disconnect the following:
   
   
   Vibration damper

   Timing chain cover
5. Lock the secondary timing chains to the idler sprocket with tool 8515, or equivalent.
6. Mark the secondary timing chain, on link on either side of the V8 mark on the cam sprocket.
7. Remove the left side secondary chain tensioner.
8. Remove the cylinder head access plug.
9. Remove the chain guide.
10. Remove the camshaft sprocket.
    
    NOTE

    There are 4 smaller bolts at the front of the head. Don-t overlook these.
11. Remove the head bolts and head.
    
    WARNING

    Don-t lay the head on its sealing surface. Due to the design of the head gasket, any distortion to the head sealing surface will result in leaks.
    
    
    
    
    

    

    Fig. Cylinder head torque sequence-4.7L engine
12. Installation is the reverse of removal. Observe the following:
    
    
    Check the head bolts. If any necking is observed, replace the bolt.

    The 4 small bolts must be coated with sealer.

    The head bolts are tightened in the following sequence:

Step 1: Bolts 1-10 to 15 ft. lbs. (20 Nm)

Step 2: Bolts 1-10 to 35 ft. lbs. (47 Nm)

Step 3: Bolts 11-14 to 18 ft. lbs. (25 Nm)

Step 4: Bolts 1-10 90 degrees

Step 5: Bolts 11-14 to 22 ft. lbs.

These details will help.

Thanks.           

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Car repair guide?

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