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