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Wednesday, April 11, 2012

Cylinder Head Removal on Dodge Caravan and Chrysler?

The complete details for Replacing Cylinder head.
The details for Dodge Caravan and Chrysler Town and Country.
The procedure for 3.0L engine, 3.4L and 3.8L engine models.

The cylinder replacing with details and diagrams are as follows:----


3.0L Engines
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:

    Negative battery cable
    Right inner splash shield
    Accessory drive belts
    Alternator
    A/C compressor and bracket
    Right motor mount
    Front cover
    Timing belt.
    Camshaft sprockets
    Rear timing cover
    Alternator bracket
    Spark plug wires
    Distributor
    Valve covers
    Intake manifold
    Exhaust front pipe
    Exhaust crossover pipe
    Exhaust manifolds
    Cylinder heads
To install:
image
Fig. Cylinder head torque sequence-3.0L engine
  1. Install or connect the following:

    Cylinder heads. Tighten the bolts in sequence and in several passes to 80 ft. lbs. (108 Nm).
    Exhaust manifolds
    Exhaust crossover pipe
    Exhaust front pipe
    Intake manifold
    Valve covers
    Distributor
    Spark plug wires
    Alternator bracket
    Rear timing cover
    Camshaft sprockets. Tighten the bolts to 70 ft. lbs. (95 Nm).
    Timing belt
    Front cover
    Right motor mount. Tighten the frame rail bolts to 50 ft. lbs. (68 Nm), the vertical fastener to 75 ft. lbs. (102 Nm) and the horizontal fastener to 111 ft. lbs. (150 Nm).
    A/C compressor and bracket
    Alternator
    Accessory drive belts
    Right inner splash shield
    Negative battery cable
  2. Fill the cooling system.
  3. Start the engine, check for leaks and repair if necessary.
3.3L & 3.8L Engines
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:
    CAUTION
    The intake manifold gaskets are made of a very thin metal and can cause injury if not properly handled.


    NOTE
    Keep all valvetrain components in order for assembly



    Negative battery cable
    Wiper module if removing the right cylinder head
    Upper and lower intake manifolds



    Valve covers.
    Spark plugs
    Dipstick tube
    Exhaust manifolds



    Rocker arm and shaft assemblies
    Cylinder head bolts, heads and gaskets
  5. Clean all gasket mating surfaces.
To install:
  1. Examine the cylinder head bolts and replace any that have stretched. 

    image
    Fig. Cylinder head torque sequence-3.3L and 3.8L engines
  2. Install the cylinder head with a new gasket. The left bank gasket has an L on it and is located at the front of the engine. The right gasket has an R stamped on it and is located at the rear of the engine. Tighten the bolts in sequence, as follows:


    1. Step 1: Tighten bolts 1-8 to 45 ft. lbs. (61 Nm).
    2. Step 2: Tighten bolts 1-8 to 65 ft. lbs. (88 Nm).
    3. Step 3: Tighten bolts 1-8 to 65 ft. lbs. (88 Nm).
    4. Step 4: Bolts 1-8 plus 90 degrees.
    5. Step 5: Tighten bolt 9 to 25 ft. lbs. (33 Nm).
  3. Check that the torque on bolts 1-8 has exceeded 90 ft. lbs. (122 Nm). If not, replace the bolt.
  4. Install or connect the following:

    Pushrods
    Rocker arm and shaft assemblies
    Valve covers
    Exhaust manifolds
    Dipstick tube with a new O-ring
    Spark plugs
    Intake manifolds
    Wiper module, if removed
    Negative battery cable
  5. Fill the cooling system.
  6. Start the engine and check for leaks.

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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