Dodge Nitro. Manual — part 116

Fig. 193: Removing/Installing Upper Main Bearing With Special Tool C- 3059
Courtesy of CHRYSLER LLC

1. Lubricate main bearing (4) with clean engine oil.

2. Start bearing (4) in place, and insert Main Bearing Tool C-3059 (3) into oil hole of crankshaft. See Fig.

193.

3. Slowly rotate crankshaft counterclockwise sliding the bearing into position. Remove Main Bearing Tool

C-3059.

4. Lubricate and install lower bearing half and main cap Tighten bolts finger tight.

1 - SPECIAL TOOL C-3059
2 - BEARING
3 - SPECIAL TOOL C-3059
4 - BEARING

NOTE:

Lubricate main bearing cap bolts with engine oil before installation.

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

Fig. 194: Installing Thrust Washer
Courtesy of CHRYSLER LLC

5. For installing thrust washers (1) at the No. 2 main bearing location, use the following procedure:



Move crankshaft forward to limit of travel. Lubricate and install the front thrust washer (1) by
rolling the washer onto the machined shelf between the No. 2 upper main bulk head and crankshaft
thrust surface. See Fig. 194.



Move crankshaft rearward to limit of travel. Lubricate and install the rear thrust washer by rolling
the washer onto the machined shelf between the No. 2 upper main bulk head and crankshaft thrust
surface.

1 -
FRONT
THRUST
WASHER

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

Fig. 195: Main Caps, Bolts, Main Bearing-Lower, Crankshaft, Thrust Washers, Main Bearing-
Upper & Engine Block
Courtesy of CHRYSLER LLC

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

The main bearing cap bolts (2) must be tightened in the proper sequence. First the inner main cap bolts,
secondly the windage tray bolts, lastly the main cap tie (horizontal) bolts.

6. Install each main bearing cap (1) and tighten inner bolts finger tight.

7. Tighten inner main bearing cap bolts (2) to 20 N.m + 1/4 turn (15 ft. lbs. + 1/4 turn).

8. Measure crankshaft end play. Refer to CRANKSHAFT MAIN BEARING JOURNALS.

9. Install windage tray. Lubricate bolts with engine oil and tighten to 27 N.m + 1/4 turn (20 ft. lbs. + 1/4

turn).

1 - MAIN CAPS
2 - BOLTS
3 - MAIN BEARING-LOWER
4 - CRANKSHAFT
5 - THRUST WASHERS
6 - MAIN BEARING-UPPER
7 - ENGINE BLOCK

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro