Dodge Nitro. Manual - part 65

Fig. 195: Tightening Right Side Camshaft Sprocket Bolt 
Courtesy of CHRYSLER LLC 

15. Install both secondary chain tensioners. Tighten bolts to 28 N.m (250 in. lbs.). 

1 - TORQUE WRENCH
2 - SPECIAL TOOL 6958 WITH ADAPTER PINS 8346
3 - LEFT CAMSHAFT SPROCKET
4 - RIGHT CAMSHAFT SPROCKET

CAUTION: Ensure the plate between the left secondary chain tensioner and 

block is correctly installed.

NOTE:

Left and right secondary chain tensioners are not common.

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

16. Remove all 3 locking pins from tensioners. 

17. Using Spanner Wrench 6958 with Adaptor Pins 8346, (4) tighten left and right. See Fig. 194 and Fig. 195

camshaft sprocket bolts to 122 N.m (90 ft. lbs.)  

18. Rotate engine two full revolutions. Verify timing marks are at the follow locations: 

Primary chain idler sprocket dot is at 12 o'clock  

Primary chain crankshaft sprocket dot is at 6 o'clock  

Secondary chain camshaft sprockets "V6" marks are at 12 o'clock  

Counterbalancer shaft drive gear dot is aligned to the idler sprocket gear dot  

19. Lubricate all three chains with engine oil. 

CAUTION: After pulling locking pins out of each tensioner, DO NOT manually 

extend the tensioner(s) ratchet. Doing so will over tension the chains, 
resulting in noise and/or high timing chain loads.

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

Fig. 196: Measuring Idler Gear End Play 
Courtesy of CHRYSLER LLC 

20. After installing all chains, it is recommended that the idler gear end play be checked. The end play must 

be within 0.10 - 0.25 mm (0.004 - 0.010 in.). If not within specification, the idler gear must be replaced. 
See Fig. 196.  

21. Install timing chain cover and crankshaft damper. Refer to procedures.  

22. Install cylinder head covers. See INSTALLATION). 

1 - IDLER SPROCKET ASSEMBLY
2 - DIAL INDICATOR

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

Fig. 197: Locating Cylinder Head Access Plugs 
Courtesy of CHRYSLER LLC 

23. Coat the large threaded access plug with Mopar® Thread Sealant with Teflon , then install into the 

right cylinder head (1) and tighten to 81 N.m (60 ft. lbs.). See Fig. 197.  

24. Install the oil fill housing.  

25. Install access plug in left cylinder head (2).  

26. Install power steering pump. Refer to INSTALLATION .  

27. Fill cooling system. Refer to STANDARD PROCEDURE .  

28. Connect negative cable to battery.  

1 - RIGHT CYLINDER HEAD ACCESS PLUG
2 - LEFT CYLINDER HEAD ACCESS PLUG

NOTE:

Before installing threaded plug in right cylinder head, the plug must be 
coated with sealant to prevent leaks.

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro