Timing Chain Removal on Dodge and Chrysler?

The details are for Dodge Durango and Chrysler Aspen car models.

The complete Timing Chain & Sprockets Replacing procedure.

The details are as follows:---

The Procedure is for 3.7L Engine.

3.7L Engines

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the cooling system.
3. Remove or disconnect the following: 
   
   
   Negative battery cable

   Valve covers

   Radiator fan
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. 
   
   
   Power steering pump

   Access plugs from the cylinder heads

   Oil fill housing

   Crankshaft damper 
   
    
   

   Fig. Camshaft sprocket timing marks-3.7L engine

   
   
   

   

   

   Fig. Crankshaft timing marks-3.7L engine

   
   
   

   

   

   Fig. Cylinder head access plugs-3.7L engine
5. Compress the primary timing chain tensioner and install a lockpin.
6. Remove the secondary timing chain tensioners.
7. Hold the left camshaft with adjustable pliers and remove the sprocket and chain. Rotate the left camshaft 15 degrees clockwise to the neutral position.
8. Hold the right camshaft with adjustable pliers and remove the camshaft sprocket. Rotate the right camshaft 45 degrees counterclockwise to the neutral position.
9. Remove the primary timing chain and sprockets.

To install:

Fig. Secondary timing chain tensioner preparation-3.7L engine

1. Use a small prytool to hold the ratchet pawl and compress the secondary timing chain tensioners in a vise and install locking pins.
   
   NOTE

   The black bolts fasten the guide to the engine block and the silver bolts fasten the guide to the cylinder head.
2. Install or connect the following:
   
   
   Secondary timing chain guides. Tighten the bolts to 21 ft. lbs. (28 Nm).

   Secondary timing chains to the idler sprocket so that the double plated links on each chain are visible through the slots in the primary idler sprocket
3. Lock the secondary timing chains to the idler sprocket with Timing Chain Locking tool as shown.
   
   
   

   

   Fig. Installing the idler gear and timing chain-3.7L engine
   
   
   
   

   

   Fig. Counterbalance shaft timing marks-3.7L engine
   
   
   
   

   

   Fig. Tightening the left side camshaft sprocket-3.7L engine
   
   
   
   

   

   Fig. Tightening the right side camshaft sprocket-3.7L engine
   
   
   
   

   

   Fig. Use the Timing Chain Locking tool to lock the timing chains on the idler gear-3.7L engine
   
   
   
   

   

   Fig. Timing chain system and alignment marks-3.7L engine
4. Align the primary chain double plated links with the idler sprocket timing mark and the single plated link with the crankshaft sprocket timing mark.
5. Install the primary chain and sprockets. Tighten the idler sprocket bolt to 25 ft. lbs. (34 Nm).
6. Align the secondary chain single plated links with the timing marks on the secondary sprockets. Align the dot at the L mark on the left sprocket with the plated link on the left chain and the dot at the R mark on the right sprocket with the plated link on the right chain.
7. Rotate the camshafts back from the neutral position and install the camshaft sprockets.
8. Remove the secondary chain locking tool.
9. Remove the primary and secondary timing chain tensioner locking pins.
10. Hold the camshaft sprockets with a spanner wrench and tighten the retaining bolts to 90 ft. lbs. (122 Nm).
    
    
    

    

    Fig. Timing cover bolt torque sequence-3.7L engine
11. Install or connect the following:
    
    
    Front cover. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm).

    Front crankshaft seal

    Cylinder head access plugs

    A/C compressor

    Alternator

    Accessory drive belt tensioner. Tighten the bolt to 40 ft. lbs. (54 Nm).

    Oil fill housing

    Crankshaft damper. Tighten the bolt to 130 ft. lbs. (175 Nm).

    Power steering pump

    Lower radiator hose

    Heater hoses

    Accessory drive belt

    Engine cooling fan and shroud

    Camshaft Position (CMP) sensor

    Valve covers

    Negative battery cable
12. Fill and bleed the cooling system.
13. 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