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Connecting rod bearing undersize list Unit: mm (in) Size Thickness US 0.25 (0.0098) 1.630 - 1.638 (0.0642 - 0.0645) US 0.50 (0.0197) 1.755 - 1.763 (0.0691 - 0.0694) US 0.75 (0.0295) 1.880 - 1.888 (0.0740 - 0.0743) US 1.00 (0.0394) 2.005 - 2.013 (0.0789 - 0.0793) CAUTION: When grinding crank pins to use undersize bearings, avoid Corner dimension (Standard): Pin 3.3 - 3.7 mm (0.130 - 0.146 in) Journal 2.8 - 3.2 mm (0.110 - 0.126 in) MAIN BEARING OIL CLEARANCE Method by measurement I Install main bearings to cylinder block and bearing caps, and Standard: 0.035 - 0.083 mm (0.0014 - 0.0033 in) I If out of specification, check main bearing housing inner diam- Method using plastigage I Remove contamination such as oil, dust completely from crank- I Cut plastigage slightly shorter than bearing width, place it in I Install main bearings to caps, and tighten connecting rod nuts CAUTION: Never rotate crankshaft. I Remove bearing caps and bearings, and measure plastigage FEM119 FEM120 CYLINDER BLOCK ZD Inspection (Cont’d) EM-78 |