Depend on whether internal or external oil filtration is to be performed, it is necessary to dismantle the oil pan,
Oil Pump, and
Cylinder Heads. Before pushing the piston assemblies upwards through the top of the engine block, employ the services of a ridge reamer to remove the ridge or carbon deposits at the top of the cylinder.When using the ridge reamer, work on one cylinder at a time. To resurface the piston top, start the engine and turn it to bottom the piston, put a rag over the piston to catch the cuttings and with the ridge removed, invert the engine to remove the cloth and cuttings. Check the connecting rods and caps for the cylinder numbers and put number on them, if not done, using small punch. Take out the nuts on the connecting rod stud in order and raise off the cap on the
Crankshaft, lay the parts side by side with each cylinder on a clean surface labeled. Apply rubber or plastic tubing on the connecting rod studs for precaution to avoid damaging the crankshaft or the cylinder wall during the disassembling of the piston assembly. Remove the piston/connecting rod assembly through the cylinder head and position the connected rod cap in the sequenced work area with referring the diagram which is given above and repeat the process for the remaining cylinder again placing the protective tubing in proper position. Pop out the small screws with which the bearing and cap and the connecting rods are connected and if the bearings are heavily used due to the many miles the engine has covered it is recommended to replace the bearings. If possible, then by the help of
Piston Ring expanding tool, take every ring from the piston, otherwise, try to expand the ring just enough and then take the help of tin strips for taking the ring out of the piston body. Put the rings in its installed order together with the piston/connecting rod on the work area indicated with numbers. To remove the connecting rod from the piston, remove the piston pin, this can hardly be done by a mere mechanic and it is advisable to be done by the dealer or automotive machine shop who will have the appropriate tools for the job. It is better to leave the piston/rod assemblies uncleaned and un-inspected at this juncture because depending on the state of the cylinder block or crankshaft, these components may have to be replaced.