Ring(S), Piston: Installation: Installation

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

If required, fit new rings to the piston. Refer to 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: Installing Intermediate Piston Ring
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 .