ENGINE 92 Fig. 21 Fig. 22 Fig. 23 Fig. 20 10 Stagger piston ring gaps such that they are 180 deg apart. Clamp piston ring compressor over piston rings upto out side diameter of piston so that it can slide over it with little force. Fig. 21. Push piston assembly in cylinder bore gradually by using mallet handle till connecting rod locates on crankpin. Fig. 22. Now rotate crankshaft slowly and simultaneously pushing piston assembly till the crankpin reaches bottom most position. 11 Install connecting rod cap with bearing, on connecting rod ensuring that identification number of connecting rod as well as on cap are matched and bearing shell lugs are on same side. Hand tighten connecting rod cap fasteners. 12 Assemble remaining piston - connecting rod assemblies in same manner. 13 Turn crankshaft and bring any one pair of pistons to BDC. Tighten fastening bolts of this pair with torque wrench to specified torque. Fig. 23. 14 Similarly tighten remaining connecting rod bolts. 15 Check connecting rod axial play or side clearance and distance between piston crown (at TDC) and cylinder block top surface. These should be within specified limits. 16 Check free running of connecting rod bearing. When crankpin and connecting rod bearing dimensions are maintained within specified values, running clearance between crankpin and bearing is automatically ensured.
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