Dodge Nitro. Manual - part 31

1. Coat the valve stem with clean engine oil and insert it into the cylinder head.  

2. Install the valve stem seal. Make sure the seal is fully seated and that the garter spring at the top of the 

seal is intact.  

3. Install the spring and the spring retainer.  

4. Using the valve spring compressor, compress the spring and install the two valve spring retainer halves.  

5. Release the valve spring compressor and make sure the two spring retainer halves and the spring retainer 

are fully seated. See Fig. 65. 

Fig. 94: Camshaft Bearing Caps Tightening Sequence 
Courtesy of CHRYSLER LLC 

2 - RETAINER
3 - VALVE STEM OIL SEAL
4 - INTAKE VALVE
5 - EXHAUST VALVE
6 - VALVE SPRING

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

6. Lubricate the camshaft journal with clean engine oil then Position the camshaft (with the sprocket dowel 

on the left camshaft at 11 o'clock and the right camshaft at 12 o'clock), then position the camshaft bearing 
caps.  

7. Install the camshaft bearing cap retaining bolts. Tighten the bolts 9-13 N.m (100 in. lbs.) in 1/2 turn 

increments in the sequence shown. See Fig. 66.  

8. Position the hydraulic lash adjusters and rocker arms. See INSTALLATION.  

ROCKER ARM - VALVE 

DESCRIPTION 

VALVE ROCKER ARM 

The rocker arms are steel stampings with an integral roller bearing. The rocker arms incorporate a 0.5 mm oil 
jet hole in the lash adjuster socket for roller and camshaft lubrication. 

REMOVAL 

VALVE ROCKER ARM 

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

Fig. 95: Removing/Installing Camshaft & Special Tool 8516 
Courtesy of CHRYSLER LLC 

1. Remove the cylinder head cover. See REMOVAL).  

2. For rocker arm removal on cylinder No. 4, Rotate the crankshaft until cylinder No. 1 is at BDC intake 

stroke.  

3. For rocker arm removal on cylinder No. 1, Rotate the crankshaft until cylinder No. 1 is at BDC 

combustion stroke.  

1 - CAMSHAFT
2 - SPECIAL TOOL 8516

NOTE:

Disconnect the battery negative cable to prevent accidental starter engagement.

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

4. For rocker arm removal on cylinders No. 3 and No. 5, Rotate the crankshaft until cylinder No. 1 is at 

TDC exhaust stroke.  

5. For rocker arm removal on cylinders No. 2 and No. 6, Rotate the crankshaft until cylinder No. 1 is at 

TDC ignition stroke.  

6. Using the Rocker Arm Remover/Installer 8516A. See Fig. 67 (2) , press downward on the valve spring, 

remove rocker arm.  

INSTALLATION 

VALVE ROCKER ARM 

Fig. 96: Removing/Installing Camshaft & Special Tool 8516 
Courtesy of CHRYSLER LLC 

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro