Dodge Dakota Sport 2001 Service Manual page 1076

AN
PISTON RINGS (Continued)
Fig. 56 Ring Side Clearance Measurement
1 - FEELER GAUGE
RING SIDE CLEARANCE CHART
ITEM
Top Compression Ring
Second Compression
Ring
Oil Control Ring
(4) Place ring in the cylinder bore and push down
with inverted piston to position near lower end of the
ring travel. Measure ring gap with a feeler gauge fit-
ting snugly between ring ends (Fig. 57).
RING GAP MEASUREMENT CHART
ITEM
Top Compression Ring
Second Compression
Ring
Oil Control Ring
SPECIFICATION
0.042 - 0.084 mm
(0.0017 - 0.0033 in.)
0.042 - 0.084 mm
(0.0017 - 0.0033 in.)
0.06 - 0.21 mm
(0.0024 - 0.0083 in.)
SPECIFICATION
0.229 - 0.610 mm
(0.0090 - 0.0240 in.)
0.483 - 0.965 mm
(0.0190 - 0.080 in.)
0.254 - 1.500 mm
(0.010 - 0.060 in.)
Fig. 57 Gap Measurement
1 - FEELER GAUGE
(5) The oil control rings are symmetrical, and can
be installed with either side up. It is not necessary to
use a tool to install the upper and lower rails. Insert
oil rail spacer first, then side rails.
(6) The two compression rings are different and
cannot be interchanged. The top compression ring
can be identified by the shiny coating on the outer
sealing surface and can be installed with either side
up. (Fig. 58).
(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. 60).
(8) Using a ring installer, install the second com-
pression ring with the dot facing up (Fig. 59) (Fig.
61).
(9) Using a ring installer, install the top compres-
sion ring (either side up).
Fig. 58 Top Compression ring
1 - TOP COMPRESSION RING
ENGINE 2.5L 9 - 47