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cross hatch angle is most satisfactory for proper seat- (4) A controlled hone motor speed between 200–300 RPM is necessary to obtain the proper cross- (5) After honing, it is necessary that the block be cleaned again to remove all traces of abrasive. CAUTION: Ensure all abrasives are removed from CLEANING Clean cylinder block thoroughly using a suitable cleaning solvent. INSPECTION ENGINE BLOCK (1) Clean cylinder block thoroughly and check all core hole plugs for evidence of leaking. (2) If new core plugs are to be installed, (Refer to 9 - ENGINE - STANDARD PROCEDURE - ENGINE (3) Examine block and cylinder bores for cracks or fractures. (4) Check block deck surfaces for flatness. Deck surface must be within service limit of 0.1 mm (0.004 CYLINDER BORE NOTE: The cylinder bores should be measured at The cylinder walls should be checked for out-of- round and taper with Tool C119 or equivalent (Fig. Measure the cylinder bore at three levels in direc- tions A and B (Fig. 42). Top measurement should be CRANKSHAFT STANDARD PROCEDURE - CRANKSHAFT END (1) Using Dial Indicator C-3339 and Mounting Post L-4438, attach to front of engine, locating probe (2) Move crankshaft all the way to the rear of its travel. Fig. 41 Cylinder Bore Cross-Hatch Pattern 1 - CROSS-HATCH PATTERN Fig. 42 Checking Cylinder Bore Size RS ENGINE 2.4L 9 - 37 ENGINE BLOCK (Continued) |