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