Crankshaft Main Bearings

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Identify the correct crankshaft by noting the groove on the front of the 2.8L crankshaft.

Fig 1: CRANKSHAFT SUPPORT WITNESS MARKS

Courtesy of DAIMLERCHRYSLER CORP.

1 - UPPER CRANKSHAFT SUPPORT HALF

2 - CRANKSHAFT MAIN BEARING

3 - WITNESS MARK

4 - WITNESS MARK

5 - LOWER CRANKSHAFT SUPPORT HALF

Identify the crankshaft support witness marks and install bearing halves in crankshaft supports. See Fig 1.

Lubricate crankshaft and main bearings with clean engine oil.

Fig 2: CRANKSHAFT SUPPORT OIL PASSAGE ALIGNMENT

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1 - CRANKSHAFT SUPPORT BOLT HEAD

2 - CRANKSHAFT SUPPORT

3 - CRANKSHAFT

4 - OIL PASSAGE SHOULDER INSIDE SUPPORT

5 - ENGINE BLOCK STRUCTURAL SUPPORT

6 - CRANKSHAFT SUPPORT ALIGNMENT ACCESS/BALANCE SHAFT OIL PASSAGE

NOTE: Crankshaft support witness marks must be facing toward the front of the engine before installing the crankshaft. The crankshaft supports have oil passages that must be aligned properly. The crankshaft support bolt heads should be facing the balance shaft. See Fig 2.

Install crankshaft supports on crankshaft. See Fig 3. Torque bolts to 44.1 N.m.

Fig 3: 2.8L CRANKSHAFT

Courtesy of DAIMLERCHRYSLER CORP.

1 - CRANKSHAFT SUPPORT HALVE

2 - MAIN BEARING HALVE

3 - GROOVE

4 - MAIN BEARING HALVE

5 - CRANKSHAFT SUPPORT HALVE

6 - MAIN BEARING SUPPORT BOLTS