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CYLINDER BLOCK EM-55 [KA24DE] C D E F G H I J K L M A EM 3. Measure the inner diameter “A” of each main bearing as shown. 4. Measure the outer diameter “Dm” of each crankshaft main jour- 5. Calculate the main bearing clearance. If the main bearing clearance exceeds the limit, replace the bearing. 6. If the clearance cannot be adjusted within the standard of any bearing, grind the crankshaft journals and a. When grinding the crankshaft journals, confirm that the “L” b. Grind the crankshaft to use it with replacement parts. Refer to , and EM-71, "Available Main Bearing" . 7. If the crankshaft is reused, measure the main bearing clearance a. The grade number of each cylinder block main journal is EEM119 AEM026 Main bearing clearance = A – Dm Standard : 0.020 - 0.047 mm (0.0008 - 0.0019 in) Limit : 0.1 mm (0.004 in) “L” : 0.1 mm (0.004 in) SEM964 EEM120 |