Crankshaft Oil Clearance Inspection/Repair: Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 Mazda 6, 2007 Mazda 6, 2006 Mazda 6, 2005 Mazda 6, and 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Because the bolts are pliant bolts, they cannot reused. Use new bolts for inspection. The bolts may be reused for assembly.
- Install the upper main bearing and crankshaft.
- Position a plastigage atop the journals in the axial direction.
- Install the lower main bearing and lower cylinder block, and tighten the bolts in the order indicated in the figure.
Tightening Torque
37-43 N.m {3.7-4.4kgf.m, 27-31 ft.lbf}
- Tighten the bolts by turning each 85° - 95° in the sequence as indicated in the figure.
- Loosen the bolts in the reverse order of tightening.
- Measure the main journal oil clearance.
- If the clearance exceeds the maximum, replace the main bearing using the main bearing selection table or grind the main journal and install the undersize bearings so that the specified oil clearance is obtained.
Standard Clearance
0.025-0.045 mm {0.0010-0.0017 in}
Maximum Clearance
0.050 mm {0.0019 in}