Cube L4-1.8L (MR18DE) (2010)
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If the measured value exceeds the limit, correct or replace crankshaft.
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If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then select main bearing and/or connecting rod
bearing. See: Connecting Rod Bearing/Service and Repair/Connecting Rod Bearing and/or See: Crankshaft Main Bearing/Service and Repair.
CRANKSHAFT RUNOUT
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Place a V-block on a precise flat table to support the journals on the both end of the crankshaft.
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Place a dial indicator (A) straight up on the No. 3 journal.
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While rotating crankshaft, read the movement of the pointer on the dial indicator. (Total indicator reading)
Standard and Limit : See: Specifications
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If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation
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Install connecting rod bearings (2) to connecting rod (3) and connecting rod bearing cap (1), and tighten connecting rod cap bolts to the specified
torque. See: Service and Repair/Disassembly And Assembly.
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Measure the inner diameter of connecting rod bearing with an inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter) - (Crankshaft pin journal diameter)
Standard and Limit : See: Connecting Rod Bearing/Specifications
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If clearance exceeds the limit, select proper connecting rod bearing according to connecting rod big end diameter and crankshaft pin journal
diameter to obtain specified bearing oil clearance. See: Connecting Rod Bearing/Service and Repair/Connecting Rod Bearing.
Method of Using Plastigage
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Remove engine oil and dust on crankshaft pin and the surfaces of each bearing completely.
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Cut a plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil holes.
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Install connecting rod bearings to connecting rod and cap, and tighten connecting rod cap bolts to the specified torque. See: Service and