Crank Pin & Connecting Rod Bearings Inspection

WARNING: This page is about a different car, the 2003 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.

Inspect crank pin for uneven wear or damage. Measure crank pin for out-of-round or taper with a micrometer. If crank pin is damaged, or out-of-round or taper is out of limit, replace crankshaft or regrind crank pin then inspect rod bearing clearance. See ROD BEARING CLEARANCE .
Crank pin diameter

Fig 1: Crank Pin Diameter Specification Chart
Courtesy of SUZUKI OF AMERICA CORP.

Crank pin out-of-round (a-b)
1. Limit: 0.01 mm (0.0004 in.)
Crank pin taper (c-d)
1. Limit: 0.01 mm (0.0004 in.)
Fig 2: Measuring Crank Pin Diameter, Out-Of-Round & Taper
Courtesy of SUZUKI OF AMERICA CORP.
Rod bearing:
Inspect bearing shells for signs of fusion, pitting, burn or flaking and observe contact pattern. Bearing shells found in defective condition must be replaced.

Two kinds of rod bearing are available; standard size bearing and 0.25 mm (0.0098 in.) undersize bearing. For identification of undersize bearing, it is painted red (1) at the position as indicated in the figure, undersize bearing thickness is 1.605-1.615 mm (0.0632-0.0636 in.) at the center of it.

Fig 3: Locating Undersize Bearing Identification Mark, (Red Paint Mark)

Courtesy of SUZUKI OF AMERICA CORP.