OEM Jeep Liberty Piston

Jeep Liberty Piston Parts and Q&A

• Piston
  5019316AC
  Q: How to Install and Replace a Piston and Connecting Rod on Jeep Liberty?

  A:

  Do not connect the piston and connecting rod assemblies into the bore until you have inserted the piston rings. Put the piston head and rings in engine oil, then apply a ring compressor over them to keep the rings in their right place. Set the bearing on the connecting rod so its shell tabs fit into the connecting rod's slots and the bearing's middle line is parallel to the middle line of the connecting rod. Wipe clean engine oil onto the bearing surface. Thread Special Tool 8507 Connecting Rod Guides into the connecting rod holes. A raised "F" mark on the piston pin bore of each piston shows the installation position which should face the front of the engine on both sides, with the connecting rod oil slinger sitting on the back edge of the piston pin bearing cap. Clean off the cylinder bore and put a bit of engine oil on it. Crankshaft rotation needs to be done until the connecting rod journal is correctly located in relation to the cylinder bore, then insert the rod and piston in the cylinder bore, ensuring that the connecting rod guides are over the crankshaft journal. Guide the connecting rod into place in the journal using a piston while you tap down the piston into the bore using a hammer handle. Torque to Yield Connecting Rod Bolts should only be used once and you should always change them when they are removed or just seem loose. Rub engine oil on the rod bolts and bearing areas, put the cap and bearing in place and tighten the bolts to 27 Nm (20 ft. lbs.) plus 90 degrees. Fit the cylinder head(s), Timing Chain and cover, covers for the cylinder heads and Oil Pan with gasket/windage tray. Use the correct engine oil to top off the crankcase and then join the negative cable to the battery.
• Vibration Damper
  5142303AB
  Q: How to Prepare for Piston and Connecting Rod Removal from an Engine on Jeep Liberty?

  A:

  First, the cylinder head needs to come off, before you can take out the pistons and connecting rods. First, use a trustworthy ridge reamer to knock down the cylinder ridge and remember to cover the piston head when you work on each cylinder's locating pin. After that, separate the Oil Pan and mark each connecting rod and cap with scribes so you know which cylinder is which. The pistons are shaped so that the front stamping is closest to the front of the engine. Lift and remove the pistons and connecting rods from the tip of the cylinder block, making certain that each rod is perfectly centered in the bore by rotating the Crankshaft. Take out the Balance Shaft Assembly after that and unscrew the connecting rod cap bolts, pulling each piston and rod out of the bore gently so as not to scrape the crankshaft journals. With the grips removed, add the bearing cap to the connecting rod, because these parts are serviced together. When installing, make sure the gaps in the compression ring are spaced out unevenly and the oil ring expander ends meet the gaps in the rail that match the fit. After lubricating the piston with clean oil, set the ring compressor on top to maintain the rings where they are. The directional stamp in the piston should be located at the front of the engine. Rotate the crankshaft so that the journal is right in the center of the cylinder bore, then slide in the assembly with rod and piston and guide the rod over the journal. Using a hammer handle, push the piston into the cylinder bore and use your other hand to guide the connecting rod onto the journal. You should never reuse the bolts for the cap; before installing the new bolts, give their threads a coat of clean oil and tighten them each by hand. Do not torque them together using a torque wrench. Last, fasten the bolts to 54 Nm (40 ft. lbs.) and tighten them another 1/4 turn, then see what side clearance you have using a feeler gauge.