Cylinder Block, Liners, Pistons, and Rods
02
030
48
RG,RG34710,132 –19–01NOV00–2/2
NOTE: Keystone compression ring with one “Pip” mark
goes in top piston ring groove and keystone ring
with two “Pip” marks goes in second ring groove
of piston. “Pip” mark(s) must face top of piston.
IMPORTANT: Pistons and ring sets differ between
engines. Piston part numbers are
marked on top of pistons for
identification. Ensure correct size rings
are installed on appropriate pistons. DO
NOT intermix rings.
Early Engines
Engine Piston Compression Oil Control
Ring Size Ring Size
10.5 L RE52836, 4 mm 4.8 mm
RE504801
12.5 L RE66125 4 mm 4.8 mm
Later Engines
10.5 L RE504343 3 mm 4 mm
12.5 L RE503969, 3 mm 4 mm
RE505901
5. Use the JDG967 Ring Expander to install compression
rings (D) and oil control ring with expander ring (E).
RG,RG34710,133 –19–26AUG02–1/6
Install Pistons and Connecting Rods
RG10300 –UN–27AUG99
Connecting Rods
A—Tongue-and-Groove Rod (Early Engines)
B—PRECISION JOINT Rod (Later Engines)
IMPORTANT: Replace rods with the same type. Do
Not mix tongue-and-groove with
PRECISION JOINT rods in the same
engine. See parts catalog for
recommendations.
Earlier engines have the traditional tongue-and-groove
between the connecting rod and cap (A). Later engines
have the PRECISION JOINT rod and cap (B).
Both types of rods provide a strong joint. Installation is
similar, with differences noted, including different torque
specifications for cap screws.
PRECISION JOINT is a trademark of Deere & Company
CTM100 (06APR04)
02-030-48
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=188
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