Bearing - Crankshaft Main: Installation

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Main Bearing Identification

Courtesy of DAIMLERCHRYSLER CORP.

Bearing caps are not interchangeable and are marked to insure correct assembly. Upper and lower bearing halves are NOT interchangeable. See Fig 1.

CAUTION: Main bearings are select fit. (Refer to ENGINE/ENGINE BLOCK/CRANKSHAFT MAIN BEARINGS - STANDARD PROCEDURE) .

NOTE: Only one main bearing should be selectively fitted while all other main bearing caps are properly tightened.

When installing a new upper bearing shell, slightly chamber the sharp edges from the plain side.

Fig 2: Removing and Installing Upper Main Bearing With Special Tool C- 3059

Courtesy of DAIMLERCHRYSLER CORP.

1 - SPECIAL TOOL C-3059

2 - BEARING

3 - SPECIAL TOOL C-3059

4 - BEARING

Lubricate main bearing (4) with clean engine oil.
Start bearing (4) in place and insert Main Bearing Tool C-3059 (3) into oil hole of crankshaft. See Fig 2.
Slowly rotate crankshaft counterclockwise sliding the bearing into position. Remove Main Bearing Tool C-3059.
NOTE: Lubricate main bearing cap bolts with engine oil before installation.
Lubricate and install lower bearing half and main cap Tighten bolts finger tight.

Fig 3: Thrust Washer Installation
Courtesy of DAIMLERCHRYSLER CORP.

1 - FRONT THRUST WASHER

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 3.
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.

Fig 4: Cylinder Block and Crankshaft

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1 - MAIN CAPS

2 - BOLTS

3 - MAIN BEARING-LOWER

4 - CRANKSHAFT

5 - THRUST WASHERS

6 - MAIN BEARING-UPPER

7 - ENGINE BLOCK

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.

Install each main bearing cap (1) and tighten inner bolts finger tight.
Tighten inner main bearing cap bolts (2) to 20 N.m + 1/4 turn (15 ft. lbs. + 1/4 turn).
Measure crankshaft end play. (Refer to ENGINE/ENGINE BLOCK/CRANKSHAFT - STANDARD PROCEDURE) .
Install windage tray. Lubricate bolts with engine oil and tighten to 27 N.m + 1/4 turn (20 ft. lbs. + 1/4 turn).

Fig 5: Main Bearing Cap Identification
Courtesy of DAIMLERCHRYSLER CORP.
Install the main cap tie (horizontal) bolts and tighten to 28 N.m (250 in. lbs.). See Fig 5. See Fig 4
Install oil pick-up tube.
Install oil pan. (Refer to ENGINE/LUBRICATION/OIL PAN - INSTALLATION) .
Fill engine crankcase with proper oil to correct level.