Ring(S), Piston: Installation: Installation

If required, fit new rings to the piston. Refer to RING(S), PISTON, STANDARD PROCEDURE .

Fig 1: Ring Expander, Piston Rings & Oil Control Ring
Courtesy of CHRYSLER GROUP, LLC

NOTE:
The No. 1 (upper) piston ring (1) and No. 2 (intermediate) piston ring (2) have the same cross section thickness. Upon close inspection, they can be identified by their configuration. The No. 2 (intermediate) piston ring (2) is a micro napier design (hook edge) while the No. 1 (upper) piston ring (1) has a square edge.
CAUTION:
To avoid damage to the piston rings, they must be installed in the following order:
- Oil control ring expander (4)
- Oil control ring (3)
- No. 2 (intermediate) piston ring (2)
- No. 1 (upper) piston ring (1)
Fig 2: Installing Piston Ring Side Rail
Courtesy of CHRYSLER GROUP, LLC

NOTE:
Typical piston shown in illustration. Do not use a piston ring expander to install the oil control ring (1).
Install the oil control ring expander.
Install the oil control ring (1) over the ring expander.

Fig 3: Installing Rings With Manufacturers I.D. Mark Facing Up
Courtesy of CHRYSLER GROUP, LLC

NOTE:
Install the rings with manufacturers I.D. mark (TOP) (2) facing up, towards the top of the piston. The No. 2 (intermediate) piston ring (3) is a micro napier design (hook edge) while the No. 1 (upper) piston ring (1) has a square edge.

Fig 4: Removing/Installing Upper & Intermediate Rings
Courtesy of CHRYSLER GROUP, LLC

NOTE:
Typical piston shown in illustration.
Install the No. 2 (intermediate) piston ring using a ring expander tool.
Install the No. 1 (upper) piston ring using a ring expander tool.
Rotate the rings around the piston, the rings must rotate in the grooves without binding.

Fig 5: Piston Ring End Gap Position
Courtesy of CHRYSLER GROUP, LLC
Position the piston ring end gaps as follows:
- Oil control ring expander gap (5)
- Oil control ring end gap (2)
- No. 2 (intermediate) ring end gap (4)
- No. 1 (upper) ring end gap (1)
Install the piston and connecting rod(s). Refer to ROD, PISTON AND CONNECTING, INSTALLATION .