1 Remove the sump, oil pump and pick-up tube, and flywheel/driveplate in Fiat Punto engine.
2 Remove the pistons and connecting rods. If no work is to be done on the pistons and connecting rods there is no need to remove the cylinder head, or to push the pistons out of the cylinder bores. The pistons should just be pushed far enough up the bores that they are positioned clear of the crankshaft journals.
3 Unbolt the crankshaft oil seal housing from the cylinder block and recover the gasket, where fitted.
4 Check the crankshaft endfloat of Fiat Punto, then proceed as follows.

SOHC (8-valve) engines

5 Note the identification markings on the main bearing caps which should be as follows. One line on the cap nearest the timing belt end, two on the second cap, C on the centre cap, then three and four lines on the remaining caps (see illustration). If no markings are visible, mark them using quick-drying paint.



Main bearing cap identification markings - SOHC (8-valve) engines


6 Slacken and remove the main bearing cap retaining bolts, and lift off each bearing cap. Recover the lower bearing shells, and tape them to their respective caps for safekeeping.
7 Lift the crankshaft from the crankcase and remove the upper bearing shells from the crankcase. Note that the centre main bearing shell incorporates thrustwashers to control crankshaft endfloat (see illustration). It the shells are to be used again, keep them identified for position.



Thrustwashers located on the centre main bearing shell - SOHC (8-valve) engines of Fiat Punto


DOHC (16-valve) engines

8 Working in the reverse of the tightening sequence, progressively slacken and remove the ten outer bolts securing the lower crankcase to the cylinder block of Fiat Punto.
9 Again, working in the reverse of the tightening sequence, progressively slacken and remove the ten inner (main bearing) bolts.
10 With all the retaining bolts removed, tap around the outer periphery of the lower crankcase using a mallet to break the seal between the lower crankcase and cylinder block. Once the seal is released and the crankcase is clear of the locating dowels, lift it up and off the crankshaft and cylinder block (see illustration). Recover the lower main bearing shells, and tape them to their respective locations in the tower crankcase. If the two locating dowels are a loose fit, remove them and store them with the lower crankcase.



Removing the lower crankcase from the cylinder block - DOHC (16-valve) engines


11 Lift out the crankshaft, recover the upper main bearing shells, and store them along with the relevant lower bearing shells. Note that the centre main bearing shell incorporates thrust washers to control crankshaft endfloat, up and off the crankshaft and cylinder block of Fiat Punto (see illustration). Recover the lower main bearing shells, and tape them to their respective locations in the tower crankcase. If the two locating dowels are a loose fit, remove them and store them with the lower crankcase.
11 Lift out the crankshaft, recover the upper main bearing shells, and store them along with the relevant lower bearing shells. Note that the centre main bearing shell incorporates thrust washers to control crankshaft endfloat.