Dodge Nitro. Manual - part 37

6. For bubbles that remain steady with shaft rotation, no further inspection can be done until disassembled. 

See DIAGNOSIS AND TESTINGENGINE LUBRICATION DIAGNOSTIC TABLE, under the Oil 
Leak row, for components inspections on possible causes and corrections.  

7. After the oil leak root cause and appropriate corrective action have been identified. See REMOVAL.  

REMOVAL 

CRANKSHAFT OIL SEAL - REAR 

Fig. 108: Crankshaft Rear Oil Seal Removal 
Courtesy of CHRYSLER LLC 

CAUTION: Use extreme caution when crankshaft polishing is necessary to 

remove minor nicks or scratches. The crankshaft seal flange is 
specially machined to complement the function of the rear oil seal.

NOTE:

This procedure can be performed in vehicle.

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

1. If being performed in vehicle, remove the transmission.  

2. Remove the flexplate. See REMOVAL. 

3. Using Seal Remover 8506 (2), remove the crankshaft rear oil seal (1).  

INSTALLATION 

CRANKSHAFT OIL SEAL - REAR 

Fig. 109: Positioning Seal Guide Special Tool 8349-2 Onto Crankshaft Rear Face 
Courtesy of CHRYSLER LLC 

NOTE:

The crankshaft oil seal CAN NOT be reused after removal.

NOTE:

The crankshaft rear oil seal remover 8506 must be installed deeply into the 
seal. Continue to tighten the removal tool into the seal until the tool can 
not be turned farther. Failure to install tool correctly the first time will 
cause tool to pull free of seal without removing seal from engine.

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

1. Lubricate the crankshaft flange with engine oil.  

2. Position the magnetic seal guide 8349-2 onto the crankshaft rear face. Then position the crankshaft rear 

oil seal (1) onto the guide (2). 

Fig. 110: Using Crankshaft Rear Oil Seal Installer 8349 And Driver Handle C-4171, With A 
Hammer, Tap The Seal Into Place 
Courtesy of CHRYSLER LLC 

3. Using Crankshaft Rear Oil Seal Installer 8349 (2) and Driver Handle C-4171 (3), with a hammer, tap the 

seal (1) into place. Continue to tap on the driver handle until the seal installer seats against the cylinder 

1 - REAR CRANKSHAFT SEAL
2 - SPECIAL TOOL 8349-2 GUIDE

1 - REAR CRANKSHAFT SEAL
2 - SPECIAL TOOL 8349-1 INSTALLER
3 - SPECIAL TOOL C-4171 HANDLE

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro

  

block crankshaft bore.  

4. Install the flexplate.  

5. Install the transmission.  

PLATE-FLEX 

REMOVAL 

FLEXPLATE 

1. Remove the transmission.  

2. Remove the bolts and flexplate.  

INSTALLATION 

FLEXPLATE 

 

2007 Dodge Nitro R/T 

2007 ENGINE 3.7L - Service Information - Nitro