Main Bearing Clearance

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Do not rotate crankshaft while gauging plastic is installed.

NOTE: After checking main bearing clearance, check crankcase bolt No. 1 for deformation, see MAIN BEARINGS, CRANKSHAFT AND CYLINDER BLOCK REMOVAL AND INSTALLATION .

Remove lower crankcase.
Clean bearings and crankshaft journals.
Place plastic gauge (1) with the same width as the bearing, parallel to the crankshaft, avoiding oil hole.

Fig 1: Identifying Plastic Gauge
Courtesy of SUZUKI OF AMERICA CORP.
Without applying sealant install lower crankcase, see MAIN BEARINGS, CRANKSHAFT AND CYLINDER BLOCK REMOVAL AND INSTALLATION .
After three minutes, remove lower crankcase and use scale (2) on plastic gauge envelope (1) to measure plastic gauge width at the widest point.
NOTE:
If either of the following conditions exists for the crankshaft journal and the cylinder block journal together, different standard values are applied.
- Stamped number for crankshaft journal diameter is "4", and stamped alphabet for cylinder block journal inside diameter is "A".
  Standard: 0.019 - 0.031 mm (0.00075 - 0.00122 in.)
- Stamped number for crankshaft journal diameter is "9", and stamped alphabet for cylinder block journal inside diameter is "F".
  Standard: 0.025 - 0.037 mm (0.0010 - 0.0014 in.)
For more information about stamped number and stamped alphabet.
Main bearing clearance

Standard: 0.022 - 0.034 mm (0.00087 - 0.00133 in.)

Limit: 0.050 mm (0.00196 in.)

Fig 2: Measuring Plastic Gauge Width Widest Point
Courtesy of SUZUKI OF AMERICA CORP.

If measured clearance is less than standard or more than service limit, replace main bearings with new ones referring to SELECTION OF MAIN BEARINGS and recheck main bearing clearance.

If measured clearance with new bearings is out of standard, select other bearing using the following procedures and recheck main bearing clearance:
- More than standard:
  Replace bearing with one size thicker or regrind crankshaft journal to undersize and use 0.25 mm undersize bearing (0.0098 in).
- Less than standard:
  Replace bearing with one size thinner or regrind crankshaft journal to undersize and use 0.25 mm undersize bearing (0.0098 in).