12.LEFT CRANKSCASE/CRANKSHAFT/ BALANCE SHAFT MXU 500 IRS SERVICE INFORMATION GENERAL INSTRUCTIONS · This section covers crankcase separation to service the crankshaft. The engine must be removed for this operation. · The following parts must be removed before separating the crankcase. -Cylinder head ( Chapter 8) -Cylinder/piston ( Chapter 9) -Drive and driven pulleys ( Chapter 10) -A.C. generator ( Chapter 17) -Starter clutch ( Chapter 19) -Oil pump ( Chapter 4) SPECIFICATIONS Unit: mm (in) Item Standard Service Limit Connecting rod big Not USA type 0.010.4 (0.0020.016) 0.6 (0.024) end side clearance USA type 0.30.6 (0.0120.024) 0.8 (0.032) Crankshaft Connecting rod big end radial clearance 00.008 (00.00032) 0.05 (0.002) Run out 0.1 (0.004) TROUBLESHOOTING Excessive engine noise Excessive bearing play 12-2