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6A-58 ENGINE MECHANICAL (C24SE)
Clean Plastigage from journals.
Lightly coat journals and bearings with engine oil.
Installation Install bearing cap and shell using new bolts.
Torque - Angle Method Main bearing cap bolt - 60 N ⋅m (6.1 kgf⋅m) +40° to 50°. Con-rod bearing cap bolts - 35 N ⋅m (3.9 kgf⋅m) +45°.
2.Micrometer and gauge method. Crankshaft removed.
Installation 1. Install caps and bearing shells to con-rods and cylinder block.
Measure Con-rod and main bearing diameters at three points I, II, III (arrowed). Divide the sum of the three measurements by three to obtain a mean diameter.
The top illustration shows con-rod measuring points. The second illustration shows main bearing measuring points.
Measure Crankshaft main and con-rod bearing journals at points I and II. Divide the sum of both measurements to obtain a mean diameter.
Crankshaft must be replaced if mean diameter of main or con- rod journals is below specified limit - see "Technical Data".
If crankshaft is serviceable subtract crankshaft mean journal diameters from corresponding shell bearing mean diameters to determine bearing clearance.
Permissible main bearing clearance - 0.015 to 0.04mm/0.0006 to 0.002in. Permissible con-rod bearing clearance - 0.006 to 0.031mm/0.002 to 0.001in. |