TIAGO

1.2L REVOTRON ENGINE 123 2.8 ENGINE OVERHAULING: (ON OVERHAUL STAND) A. Engine Assembly : I. Assembly of Cylinder Block Sub- Assemblies 1. Check cylinder block for cracks by pressure testing method. Clean cylinder bores, bearing surfaces, oil passages in crank case thoroughly. Check water jackets for leakages by blowing air at a pressure of 5 bar & then dipping the cylinder block in the hot water. (Temp of water 70 0 to 80 0 C) NOTE  The block with any leakages / cracks should be discarded. 2. Check crankcase mating surfaces with cylinder head for unevenness with the help of straight edge and feeler gauge. If necessary grind this surfaces just to clear unevenness. Measure across the length and breadth to specific mention value in table. 3. Ensure main bearing parent bore dimensions are within specified limits. (For specified limit and procedure refer cylinder block inspection chapter.) 4. Ensure that the minimum height of crank case is not less than the specified minimum height. NOTE  Apply light coat of grease to the fourth main bearing cap.  Ensure the slot on thrust washers are facing on outer side. 5. Tighten the hex socket counter sunk screw to join the crank sensor target wheel to crankshaft. NOTE  Ensure the dowel pin.  While replacing target wheel or ECU we have to do flywheel learning (for procedure refer page no 147 of petrol Engine.) 6. Match the lug of thrust washer with block. 7. Insert the thrust washers from 3 rd bearing from cylinder block and place the upper bearing shell. (Apply the coat of engine oil.) NOTE  Apply light coat of engine oil to all main bearing shells and crankshaft journals.  Ensure crankshaft holes are properly cleaned and free from any blockages. 8. Place the crankshaft. 9. Spread the liquid red sealant on crankcase without spilling the sealant in oil paths / inside the block.