Dodge Nitro. Manual - part 124

Fig. 223: Removing/Installing No. 1 And No.2 Piston Rings From Piston Using Ring Expander Tool
Courtesy of CHRYSLER LLC 

3. Install lower side rail first and then the upper side rail. 

The No. 1 and No. 2 piston rings have a different cross section. See Fig. 223. Insure that which ever 
design No. 2 ring is installed, it is installed with manufacturers I.D. mark (dot) facing up, towards top of 
the piston. See DESCRIPTION.  

4. Install No. 2 piston ring and then No. 1 piston ring. See Fig. 223. 

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

Fig. 224: Piston Ring End Gap Position 
Courtesy of CHRYSLER LLC 

5. Position piston ring end gaps as shown in Fig. 224.  

6. Position oil control ring expander gap at least 45° from the side rail gaps but not on the piston pin center 

or on the thrust direction. Staggering ring gap is important for oil control.  

DAMPER - CRANKSHAFT 

REMOVAL 

DAMPER-CRANKSHAFT 

1 - SIDE RAIL UPPER
2 - NO. 1 RING GAP
3 - PISTON PIN
4 - SIDE RAIL LOWER
5 - NO. 2 RING GAP AND SPACER EXPANDER GAP

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

Fig. 225: Accessory Drive Belt Routing 
Courtesy of CHRYSLER LLC 

1. Disconnect negative battery cable.  

2. Remove the accessory drive belt (7) (Refer to REMOVAL ).  

3. Raise vehicle on hoist. 

1 - GENERATOR
2 - IDLER PULLEY
3 - WATER PUMP PULLEY
4 - CRANKSHAFT PULLEY
5 - ACCESSORY DRIVE BELT TENSIONER
6 - A/C COMPRESSOR
7 - ACCESSORY DRIVE BELT

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro

  

Fig. 226: Using 1023 Puller And 9020-R To Remove Crankshaft Damper 
Courtesy of CHRYSLER LLC 

4. Remove crankshaft damper bolt.  

5. Use 1023 puller, and insert 9020-R, remove crankshaft damper.  

INSTALLATION 

DAMPER-CRANKSHAFT 

1 - SPECIAL TOOL 1023 PULLER
2 - SPECIAL TOOL 9020-R INSERT

 

2007 Dodge Nitro R/T 

2007 ENGINE 4.0L - Service Information - Nitro