Crankshaft, Main Bearings, and Flywheel
02
040
26
RG,RG34710,171 –19–30SEP97–1/1
Replace Crankshaft Drive Gear
RG8411 –UN–19MAY98
Crankshaft, Timing Wheel, Gear
A—Crankshaft C—Woodruff Key D—Timing Wheel E—Crankshaft Drive Gear
B—Roll Pin
IMPORTANT: Crankshaft must be removed before
replacing drive gear (E).
NOTE: Remove crankshaft gear for replacement only;
it is not necessary to remove gear for
crankshaft removal.
1. Protect crankshaft machined wear sleeve surface
with masking tape.
2. Remove crankshaft gear using D01074AA 17-1/2
Ton Puller Set.
3. Discard gear after removal.
4. Remove Woodruff key (C), crankshaft timing wheel
(D), and roll pin (B) from crankshaft keyway.
5. Remove masking tape.
CAUTION: Oil fumes or oil can ignite above
193°C (380°F). Do not allow a heating
element to be in direct contact with the oil.
Heat the oil in a well-ventilated area. Plan a
safe handling procedure to avoid burns.
IMPORTANT: Crankshaft gear must be installed on
crankshaft before crankshaft is
installed in engine, otherwise
damage to thrust bearings could
occur.
6. Heat crankshaft gear to 182°C (360°F) maximum,
using either heated oil or oven heat.
7. Install new roll pin in crankshaft and position timing
wheel over roll pin for proper indexing.
8. Install Woodruff key in crankshaft keyway.
9. Place gear on crankshaft flange. Be sure key on
crankshaft is properly aligned with keyway in gear.
IMPORTANT: When installing gear, do not gouge
or nick crankshaft flange.
10. Firmly seat gear and timing wheel against
crankshaft flange using a driver.
No clearance is allowed between gear, timing
wheel, and crankshaft after gear cools.
CTM100 (06APR04)
02-040-26
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=222
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