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I Measurement should be done after cylinder bore cools SEM316A CRANKSHAFT NMEM0026S07 1. Check crankshaft main and pin journals for score, wear or 2. With a micrometer, measure journals for taper and out-of- Out-of-round (X − Y): Main journal: Less than 0.005 mm (0.0002 in) SEM434 3. Measure crankshaft runout. Runout (Total indicator reading): Less than 0.05 mm (0.0020 in) SEM685D SEM040F BEARING CLEARANCE NMEM0026S08 I Use Method A or Method B. Method A is preferred because it Method A (Using bore gauge and micrometer) Main bearing NMEM0026S0801 1. Set main bearings in their proper positions on cylinder block 2. Install main bearing cap and main bearing beam to cylinder Tighten all bolts in correct order in two or three stages. Refer Measure inner diameter “A” of each main bearing. GI MA LC EC FE CL MT AT PD AX SU BR ST RS BT HA SC EL IDX CYLINDER BLOCK Inspection (Cont’d) EM-73 |