Cylinder Block, Liners, Pistons, and Rods
02
030
49
RG,RG34710,133 –19–26AUG02–2/6
RGR31127 –UN–11DEC97
Staggering Piston Ring Gaps
A—Piston Head
B—Top Compression Ring Gap
C—Oil Control Ring Gap
D—Expander Ring Gap
E—Bottom Compression Ring Gap
F—Front of Engine
1. Stagger ring gaps on pistons as shown.
RG,RG34710,133 –19–26AUG02–3/6
RG8404 –UN–09DEC97
Compressing Piston Rings
G—JDG1017 Ring Compressor
2. Coat pistons, liners, and inside of JDG1017 Piston
Ring Compressor (G) with clean engine oil.
3. Lay piston rod assembly on piston’s top and compress
rings with compressor. Squeeze handles together and
install pin to full depth to secure.
4. Lubricate rod bearing half and install onto rod with
notches on bearing seated with notch in rod.
Continued on next page
CTM100 (06APR04)
02-030-49
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=189
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