ENGINE 1.3 QUADRAJET (75PS) 53 28.Refit the lower crankcase (1) with lower main bearing halves in its seat. 29.Tighten the M10 central bolt s (2a) securing the lower crankcase to the specified torque of 1.9 ~ 2.1Kg-m + 800 +/- 30, following the order shown in the figure. Use the angular tightening tool (2b). 30 Tighten the lower M8 crankcase side bolt s to a specified torque of 2.9 ~ 3.2Kg-m, following the order shown in the figure. 31.Remove the lower crankcase with main bearing halves fitted previously and, using a suit able graduated measuring instrument (1a), measure the clearance shown by the calibrated wire (1b). Clearance between main bearings - crankshaft main journals (mm) 0.028 ~ 0.048 NOTE: If the figure measured is outside of the tolerance, replace the half-bearings with ones of the correct size nd category. 32.After checking all the main journals, apply a strip of specified silicon sealant to the contact surfaces between the lower crankcase and the upper crankcase as shown in the figure above. NOTE : The sealant strip must be unbroken. The sealant strip diameter must be 2.5 - 3.5 mm. 33.After applying the sealant clean the crankshaft lower oil seal seat. 34.Fit the lower crankcase to the upper crankcase permanently by tightening the bolt s as shown previously. 35.Check that the small end bush bore (inner diameter) diameter is within the recommended limits of 23.006 mm ~ 23.012 mm; if not, replace the connecting rod assemblies. 36.Check that the diameter of the gudgeon pin housing in the piston is within the recommended values of 22.990 mm ~ 22.996 mm. 37.If the piston pin bore diameter is not within specified values, replace the piston complete with its piston pin and rings. 38.Check that the outer diameter of the piston pins is within the recommended limit s of 22.982 mm ~ 22.987 mm; if not, replace the worn piston pins. 39.Fit the piston rings in the cylinder bore and check that the opening between the ends is within the recommended values; if this is not the case, replace the circlips. Cylinder compression 1st sealing ring gap (mm) 0.20 ~ 0.30 Cylinder compression 2nd sealing ring gap (mm) 1.0 ~ 1.5 Piston oil scraper ring gap (mm) 0.25 ~ 0.50
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