ASSEMBLY OF PISTON AND CONNECTING II. ROD SUB-ASSEMBLIES 1. Starting with oil rings, install the taper faced rings and top rings using ring expander as per illustrated in fig. 2. Ensure the top mark on the top ring should be on top facing piston crown. 3. Using ring expander, assemble piston rings. 4. Place the bearing shells of connecting rod assembly. 5. Lubricate the gudgeon pin and small end before assembly. 6. Place the gudgeon pin to the small end of connecting rod to assemble connecting rod in piston assembly. 7. Assemble gudgeon pin from the small end of connecting rod. 8. Assemble connecting rod. 9. Using suitable pliers, insert piston pin round wire circlip. Follow the same procedure to assemble the 10. remaining two pistons. Fix the connecting rod shell. 11. Apply oil on piston rings, cylinder bores and 12. bearing shells. Lower piston connecting rod assembly upto 13. piston rings into cylinder bore with arrow on piston crown pointing towards timing belt side. CAUTION The piston ring gap should not be inline with • each other while assembling on piston. Place the piston rings on the piston, such • that the ring gaps are 1200 apart. NOTE Ensure that the arrow mark on the piston • crown is facing the left of technician and connecting rod notch is on the opposite side of arrow mark while assembling the piston connecting rod assembly. NOTE Turn the crankshaft and bring 1-4 crankpin • journals to top most position (TDC) on to which connecting rod with piston are to be fitted. Petrol Engine Ph-2 (CAFÉ) 146
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