Dodge Nitro. Manual - part 15

 

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Dodge Nitro. Manual - part 15

 

 

Install Cooling System Tester 7700 or equivalent to pressure cap neck. Start the engine and observe the tester's 
pressure gauge. If gauge pulsates with every power stroke of a cylinder a combustion pressure leak is evident. 

CHEMICAL TEST METHOD 

Combustion leaks into the cooling system can also be checked by using Bloc-Chek Kit C-3685-A or equivalent. 
Perform test following the procedures supplied with the tool kit. 

REMOVAL 

REMOVAL 

FAST. EXCESSIVE PRESSURE BUILT UP, BY CONTINUOUS ENGINE 
OPERATION, MUST BE RELEASED TO A SAFE PRESSURE POINT. 
NEVER PERMIT PRESSURE TO EXCEED 138 kPa (20 psi).

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

Fig. 48: Timing Chain Cover & Crankshaft Timing Marks 
Courtesy of CHRYSLER LLC 

1. Disconnect the negative cable from the battery.  

2. Raise the vehicle on a hoist.  

3. Disconnect the exhaust pipe at the left side exhaust manifold.  

4. Drain the engine coolant. Refer to COOLING .  

5. Lower the vehicle.  

6. Remove the intake manifold. Refer to procedure in this article. 

1 - TIMING CHAIN COVER
2 - CRANKSHAFT TIMING MARKS

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

7. Remove the cylinder head cover. Refer to procedure in this article.  

8. Remove the fan shroud and fan blade assembly. Refer to COOLING .  

9. Remove accessory drive belt. Refer to COOLING .  

10. Remove the power steering pump and set aside.  

11. Rotate the crankshaft until the damper timing mark is aligned with TDC indicator mark (2). See Fig. 48

Fig. 49: Verifying V6 Mark On Camshaft Sprocket Is At 12 O'clock Position 
Courtesy of CHRYSLER LLC 

12. Verify the V6 mark on the camshaft sprocket is at the 12 o'clock position. See Fig. 49. Rotate the 

crankshaft one turn if necessary.  

13. Remove the crankshaft damper. See REMOVAL.  

14. Remove the timing chain cover. See REMOVAL). 

1 - LEFT CYLINDER HEAD
2 - RIGHT CYLINDER HEAD

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

Fig. 50: Special Tool 8429, Camshaft Chain & Crankshaft Timing Gear 
Courtesy of CHRYSLER LLC 

15. Lock the secondary timing chains to the idler sprocket using Secondary Camshaft Chain Holder 8429 (1). 

See Fig. 50

16. Mark the secondary timing chain, one link on each side of the V6 mark on the camshaft drive gear. 

1 - SPECIAL TOOL 8429
2 - CAMSHAFT CHAIN
3 - CRANKSHAFT TIMING GEAR

NOTE:

Mark the secondary timing chain prior to removal to aid in installation.

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

 

 

 

 

 

 

 

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