Before removing and changing the piston, first unhook the negative cable from the battery. After that, take off the
Oil Pan and gasket/windage tray, the cylinder head covers, timing chain cover and the cylinder head(s). If it's required, use a good ridge reamer to eliminate the ridge on the top of each cylinder, covering the piston heads. Lift each dead piston and set it aside before spinning the
Crankshaft to put each connecting rod in the center of the cylinder bore. Don't put a number stamp or punch on the connecting rods or caps because it may damage them and mark their positions with a permanent ink marker or scribe tool to avoid hurting the cracked joint surfaces. Take the top off the connecting rod with Special Tool 8507, fit the connecting rod guides into the connecting rod and remove that piston, then continue for each piston that needs service. As soon as you take out the bearing, put the connecting rod cap in place to prevent harm. Prefer solvent cleaning on your pistons and use a wood or plastic scraper in the grooves around your pistons, without removing the pins, rather than utilizing abrasive tools. Examine the connecting rod journal for any extra wear, taper or scratches and inspect the connecting rod for any twist or slight bend. Check the piston for a smooth taper or elliptical shape, look for any scoring or scraping on the skirts and check the ring lands for any cracks or decay. Put the piston rings in first, after that immerse the piston head and rings in clean engine oil, place a ring compressor over them and turn it until the rings are well covered and do not move. Apply clean engine oil to the surface of the bearing and slide it onto the connecting rod so its hole lines up with the rod's hole. Installing Special Tool 8507 Connecting Rod Guides in the threads of the connecting rod bolts is necessary. Both piston pins have a raised F inside the piston pin bore which shows you where to install the piston so that its F is toward the engine's front and the connecting rod location is also toward the front. Clean and spray the cylinder bore with engine oil, keeping the oil off the piston, then turn the crankshaft until the connecting rod journal is centered in the cylinder bore. Guide the rod and piston into the bore, fit the connecting rod on the journal and hold the piston down while tapping it with the end of a hammer handle. Torque to Yield Bolts used for the connecting rod should only ever be used once, so replace them whenever you remove them. Mist engine oil on the rod bolts and bearing surfaces, fit the cap and bearing on the rod and tighten the bolts to 27 Nm (20 ft. lbs.) plus 90°. Then, fit on the reinstalled cylinder head(s), timing chain and cover as well as the cylinder head cover and oil pan and gasket or windage tray, add the required engine oil to the crankcase and link up the negative cable with the battery once again.