SAFARI

ENGINE 91 Fig. 18 Fig. 19 Fig. 17 NOTE : If big end parent bore diameter is maintained within specifications, proper bearing dimension is automatically achieved. However, it must be ensured by physically checking the bearing size. 15 Measure pretension of bearing with a feeler gauge after loosening cap bolt, opposite to bearing shell lug. Fig. 19. 16 Remove connecting rod bearing caps. NOTE : Connecting rod bearing shells, no matter of which repair stage, are precision finished and must on no account be bored or scraped. INSTALLATION OF PISTONS AND CONNECTING RODS 1 Clean piston, connecting rod, piston rings and bearing shells. 2 Warm up piston in hot oil at 70 deg C to 80 deg C. 3 Insert connecting rod in piston such that face of connecting rod on which an arrow mark is stamped will come on same side of arrow on piston. 4 Insert piston pin quickly. Fit circlips using suitable pliers. 5 Assemble piston rings using piston ring expander from top of the piston starting from 3rd groove. Fig. 20. Ensure that ‘TOP’ mark on 2nd ring faces piston crown. 6 Assemble bearing shells in connecting rods/caps making sure that locating lugs of the shells are properly seated. In case old bearings are being reused, install marked shells in their respective connecting rods/Caps. 7 Oil piston, bearing bores and cylinder bores. 8 Turn crankshaft and bring the crank pin onto which connecting rod is to be assembled to top most position. 9 Insert connecting rod with piston into cylinder bore with arrow on piston crown pointing towards front (forward driving direction) and arrow on connecting rod would point towards oil cooler.