Dodge Nitro. Manual - part 144

 

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Dodge Nitro. Manual - part 144

 

 

Fig. 304: Identifying Timing Gear Components 
Courtesy of CHRYSLER LLC 

1. Perform fuel pressure release procedure. Refer to STANDARD PROCEDURE .  

2. Disconnect negative battery cable.  

3. Remove both cylinder head covers and loosen the rocker arm assemblies. See REMOVAL.  

4. Remove the front timing belt cover. See REMOVAL).  

5. Mark belt running direction, if timing belt is to be reused. 

1 - RIGHT CAMSHAFT GEAR ALIGNMENT 
MARK

7 - LEFT CAMSHAFT GEAR

2 - RIGHT CAMSHAFT GEAR

8 - LEFT CAMSHAFT GEAR ALIGNMENT 
MARK

3 - CYLINDER HEAD TO INNER TIMING BELT 
COVER BOLTS - RIGHT

9 - CRANKSHAFT GEAR ALIGNMENT MARK

4 - TIMING BELT

10 - CRANKSHAFT GEAR

5 - WATER PUMP PULLEY

11 - TIMING BELT TENSIONER PULLEY

6 - CYLINDER HEAD TO INNER TIMING BELT 
COVER BOLTS - LEFT

12 - TIMING BELT TENSIONER

CAUTION: The 4.0L is NOT a freewheeling engine. Therefore, loosen the valve train 

rocker assemblies before servicing the timing drive.

CAUTION: When aligning timing marks, always rotate engine by turning the 

crankshaft. Failure to do so will result in valve and/or piston damage.

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

6. Rotate engine clockwise until crankshaft (10) mark aligns with the TDC mark on oil pump housing (9) 

and the camshaft sprocket (2, 7) timing marks (1, 8) are aligned with the marks on the rear cover. See Fig. 
304
.  

7. Remove the timing belt tensioner (12) and remove timing belt.  

8. Inspect the tensioner for fluid leakage.  

9. Inspect the pivot and bolt for free movement, bearing grease leakage, and smooth rotation. If not rotating 

freely, replace the arm and pulley assembly. 

Fig. 305: Compressing Timing Belt Tensioner 
Courtesy of CHRYSLER LLC 

10. When tensioner is removed from the engine it is necessary to compress the plunger into the tensioner 

body. 

1 - VISE
2 - LOCKING PIN

CAUTION: Index the tensioner in the vise the same way it is installed on the 

engine. This ensures proper pin orientation when tensioner is 
installed on the engine.

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

Place the tensioner into a vise (1) and SLOWLY compress the plunger. Total bleed down of 
tensioner should take about 5 minutes. See Fig. 305.  

When plunger is compressed into the tensioner body install a pin (2) through the body and plunger 
to retain plunger in place until tensioner is installed.  

CAMSHAFT SPROCKETS 

Fig. 306: Camshaft Thrust Plate, Bolt & O-Ring 
Courtesy of CHRYSLER LLC 

1 - CAMSHAFT THRUST PLATE
2 - BOLT
3 - O-RING

CAUTION: The 4.0L engine is NOT a free-wheeling design. Therefore, care should be 

taken not to rotate the camshafts or crankshaft with the timing belt 
removed.

NOTE:

The camshaft timing gears are keyed to the camshaft.

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

1. Perform fuel pressure release procedure. Refer to STANDARD PROCEDURE .  

2. Remove front timing belt cover. See REMOVAL).  

3. Position crankshaft sprocket to the TDC mark on the oil pump housing by turning crankshaft in the 

clockwise direction.  

4. Install a dial indicator in number 1 cylinder to check TDC of the piston. Rotate the crankshaft until the 

piston is at exactly TDC.  

5. Remove camshaft retainer/thrust plate (1) from rear of right cylinder head. See Fig. 306.  

6. Remove the right cylinder head cover.  

7. Remove the right rocker arm assembly.  

8. Remove the timing belt tensioner and timing belt. 

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

 

 

 

 

 

 

 

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