Dodge Nitro. Manual - part 114

Fig. 186: Main Bearing Cap Identification 
Courtesy of CHRYSLER LLC 

12. Install the main cap tie (horizontal) bolts and tighten to 28 N.m (250 in. lbs.). See Fig. 186.  

13. Install rear crankshaft oil seal retainer and oil seal (Refer to INSTALLATION )  

14. Install oil pump assembly. See INSTALLATION.  

15. Install dowel pin in crankshaft. See INSTALLATION.  

16. Install crankshaft sprocket. See INSTALLATION.  

17. Install timing belt and tensioner. See INSTALLATION.  

18. Install front timing belt cover. See INSTALLATION.  

19. Install oil pickup tube and tighten bolt to 28 N.m (250 in. lbs.).  

20. Install oil pan. See INSTALLATION. 

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

21. Install engine assembly. See INSTALLATION.  

22. Fill engine crankcase with proper amount of oil.  

BEARING -CRANKSHAFT MAIN 

STANDARD PROCEDURE 

BEARING -CRANKSHAFT MAIN FITTING 

Fig. 187: Engine Block Main Bore Grade 
Courtesy of CHRYSLER LLC 

The main bearings are a "select fit" to achieve proper oil clearances. For main bearing selection, the block and 

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

crankshaft have grade identification marks. 

The marks for the cylinder block main bore grade are located on the right front side of the engine block. See 
Fig. 187. These grade marks (1, 2, or 3) are read left to right, corresponding to main bore 1, 2, 3, 4. The 5th 
digit is a check some digit for plant validation during manufacturing. 

Fig. 188: Crankshaft Main Journal Grade Marking Location - Rear of Block 
Courtesy of CHRYSLER LLC 

The grade marks for the crankshaft are located on the rearmost crankshaft counter weight as shown in Fig. 188. 
The crankshaft journal grade marks (A, B, or C) are read left to right, corresponding with journal number 1, 2, 
3, 4. 

Refer to . Refer to to properly select the main bearings. For an example, if the main bore grade is 3 and the 
journal grade is B, the proper select fit bearing would be a (2) +0.003 mm (+0.0002 in.). 

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

Fig. 189: Main Bearing Grade Marks 
Courtesy of CHRYSLER LLC 

1 - LOWER MAIN BEARING
2 - UPPER MAIN BEARING
3 - OIL FEED HOLE AND GROOVE
4 - GRADE SELECTION INK MARKS

NOTE:

Service main bearings have a number from (1-5) marked in ink on the bearing 

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro