Jeep Wrangler 1999 Electronic Service Manual page 1754

TJ
SERVICE PROCEDURES (Continued)
(7) The second compression ring has a slight
chamfer on the bottom of the inside edge and a dot
on the top for correct installation (Fig. 9).
(8) Using a ring installer, install the second com-
pression ring with the dot facing up (Fig. 9) (Fig. 11).
(9) Using a ring installer, install the top compres-
sion ring (either side up).
Fig. 8 Top Compression ring identification
Fig. 9 Second Compression Ring Identification
Fig. 10 Compression Ring Chamfer Location
Ring Gap Orientation
• Position the gaps on the piston as shown (Fig.
12).
• Oil spacer - Gap on center line of piston skirt.
• Oil rails - gap 180° apart on centerline of piston
pin bore.
Fig. 11 Compression Ring Installation
• No. 2 Compression ring - Gap 180° from top oil
rail gap.
• No. 1 Compression ring - Gap 180° from No. 2
compression ring gap.
Fig. 12 Ring Gap Orientation
2.5L ENGINE 9 - 19