Before full disassembly of the piston and connecting rod assemblies there are few components that need to be detached,the cylinder head, the oil pan and the oil pump. First, eliminate the ridge at the top of each cylinder utilizing a ridge reaming tool because the existence of this ridge is dangerous to the pistons when undertaking the removal processes. After clearing the ridges, inversion of the engine is done with crank shaft upwards. When disconnecting the connecting rods, it will be necessary to check the end play with feeler gages; it should readily be possible to insert the thickness of a feeler gage between the first connecting rod and the
Crankshaft throw; if the end play is excessive, it may be necessary to replace the connecting rods. Locate the connecting rods and the caps with the marks; in case the latter ones are missing, the engineer shall apply a center punch to put an indentation of the cylinders' number. Turn the connecting rod cap nuts gradually to be unfastened by hand; then take off the first connecting rod cap and the bearing insert without dropping the latter. For each of the connecting rod cap bolts to be removed, slip in a short length of plastic or rubber hose over the bolt before gently pounding the connecting rod/piston assembly out through the top of the engine, using a wooden or plastic hammer handle only. In case of resistance make sure that all the ridge material has been cleared. Perform it for the rest of the cylinders and once they are removed, fit back the connecting rod caps and bearing inserts to their corresponding rods and tighten the cap nuts only with fingers to avoid the wear and tear of the bearing surfaces.