OEM 2001 Jeep Grand Cherokee Piston Ring Set

2001 Jeep Grand Cherokee Piston Ring Set Parts and Q&A

• Q: How to Properly Install a Piston Ring Set on 2001 Jeep Grand Cherokee?

  A: Before putting rings in, remove all carbon from the ring grooves and check that both the oil ring drain holes and the pin boss in the ring groove are not obstructed, to prevent any change in the clearances and potential ring damage. Ensure that there are no nicks or burrs in the piston ring grooves and go on to measure the ring clearance by fitting a snugly fitted feeler gauge between the ring land and ring, watching the ring as it rotates. For both the top and second compression rings, allowable clearance is 0.042 - 0.084 mm and the oil control ring has a clearance range of 0.06 - 0.21 mm. Then, set the ring into the ring groove and slowly press down with an inverted piston until the ring's lower half enters the cylinder. Check the size of the gap between the ring's ends with a feeler gauge; for the top compression ring it should be 0.229 - 0.610 mm, for the second compression ring 0.483 - 0.965 mm and for the oil control ring 0.254 - 1.500 mm. Both sides of the oil control rings can be placed facing up, but you should always start by fitting the oil rail spacer and the side rails. The top compression ring is easy to spot by its shiny surface and can be put on either way, but the second compression ring has a chamfer on the edge and a dot to help you install it correctly. Installing the second compression ring with the dot facing up and then the top compression ring, using the ring installer. On the piston, place the oil spacer gap in the center of the skirt, oil rail gaps 180° apart from the centerline of the piston pin bore, the No. 2 compression ring gap 180° below the top oil rail and the No. 1 compression ring gap 180° below the No. 2 ring.