Crankshaft Main Bearing: Service and Repair
LEGEND
1 Bearing Shells No. 1, 2, 4 and 5
2 Main Bearing Cap Bolts
3 Main Bearing Cap
4 Bearing Shell No. 3
5 Upper Main Bearing Thrust Washers
6 Sensor Wheel
7 Bolt
8 Dowel Pin
9 Crankshaft
10 Lower Main Bearing Thrust Washers
NOTE: During removal and installation procedures, refer to the component location illustration above and component notes below.
COMPONENT NOTES
Bearing Shells No. 1, 2, 4 and 5 (1)
- Shells without oil groove installed in bearing caps.
- Shells with oil groove installed in block.
- Do not interchange used bearings.
Main Bearing Cap Bolts (2)
- Always replace.
- Tighten only to 65 Nm (48 ft. lbs.) when checking clearances.
- Final tighten in two steps as follows:
- 1st step, tighten to: 65 Nm (48 ft. lbs.).
- 2nd step, turn an additional: 90° (1/4 turn).
Main Bearing Caps (3)
- Bearing cap 1 installed at pulley end.
- Bearing cap 3 with recesses for thrust washers.
- Bearing shell retaining lugs of cylinder block and bearing cap must be on the same side.
Bearing Shell No. 3 (4)
- Shells without oil groove installed in bearing caps.
- Shells with oil groove installed in block.
- Do not interchange used bearings.
Upper Main Bearing Thrust Washers (5)
- Install on bearing cap No. 3.
- Refer to illustration for installed position.
Sensor Wheel (6)
- For Engine Speed sensor.
Bolt (7)
- Final tighten in two steps as follows:
- 1st step, tighten to: 10 Nm (7 ft. lbs.).
- 2nd step, turn an additional: 90° (1/4 turn).
Dowel Pin (8)
- Refer to illustration below for installed dimension.
Crankshaft (9)
- Check Crankshaft Axial Clearance
- New: 0.07 to 0.17 mm.
- Wear limit: 0.37 mm
- Check Main Bearing Journal Radial Clearance Using Plastigage:
- New: 0.03 to 0.08 mm
- Wear limit: 0.17 mm
- Do not allow the crankshaft to rotate while measuring radial clearance.
Lower Main Bearing Thrust Washers (10)
- Install at block bearing No. 3.
- Refer to illustration for installed position.
SENSOR WHEEL DOWEL PIN PROJECTION
Dimension -a-: 2.5-3.0 mm (0.0985-0.1182 inch)