Cylinder Block, Liners, Pistons, and Rods
02
030
7
RG,RG34710,107 –19–01NOV00–1/4
Remove Pistons and Connecting Rods
RG8203 –UN–05DEC97
Piston and Rod Exploded View
RG8299B –UN–06DEC97
Removing Piston Spray Jets
A—Piston with Rings
B—Piston Pin
C—Snap Ring (2 used)
D—Connecting Rod with Bushing
E—Rod Bearings
F—Connecting Rod Cap
G—Special Cap Screws
H—Piston Spray Jet
The engine does not always have to be removed from the
machine to service the pistons and connecting rods. If
engine is to be removed, see your Machine Technical
Manual.
NOTE: The piston and liner sets on later 12.5 L engines
are different from earlier engines. Do not mix sets
in engines. See parts catalog for correct
applications.
CAUTION: DO NOT drain engine coolant until it
cools below operating temperature. Then slowly
loosen block drain valve to relieve any
pressure.
1. Drain all coolant and engine oil.
2. Remove all piston spray jets.
NOTE: If engine is to be completely disassembled, follow
ENGINE DISASSEMBLY SEQUENCE in Group
010.
3. Remove cylinder head. (See REMOVE CYLINDER
HEAD in Group 020.)
4. Remove oil pan. (See REMOVE ENGINE OIL PAN in
Group 060.) Remove oil pick-up tube. (See REMOVE
AND INSTALL OIL PICKUP TUBE in Group 060.)
Continued on next page
CTM100 (06APR04)
02-030-7
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=147
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