OEM 2004 Chrysler Pacifica Piston Ring Set

2004 Chrysler Pacifica Piston Ring Set Parts and Q&A

• Q: How to Service a Piston Ring Set on 2004 Chrysler Pacifica?

  A: First, remove both the piston and the connecting rod and use a ring expander tool to pull out piston rings No. 1 and No. 2. After that, remove the upper and lower side rails of the oil rings, then remove the oil ring expander. During installation, measure the distance between the piston rings and the cylinder and piston and remember to install the No. 2 piston ring so its manufacturer's dot faces toward the top of the piston. Place the following piston rings in this arrangement: oil ring expander, upper oil ring side rail, lower oil ring side rail, No. 2 intermediate piston ring, and No. 1 upper piston ring. Put the end of the side rail into the piston ring groove, hold it steady, and insert it correctly against the expander so that you don't need a piston ring expander. Place the upper side rail first, followed by the lower side rail making sure No. 2 piston ring is facing the right direction. After that, place the No. 2 piston ring and then the No. 1 piston ring, making sure the end gaps are correct and the oil ring expander gap is 45° from the side rail gaps, so that it does not get between the pin center or thrust direction to control the oil.