Crankshaft, Main Bearings, and Flywheel
02
040
16
RG,RG34710,162 –19–13AUG99–1/2
Remove Crankshaft Main Bearings
RG8127 –UN–20NOV97
JDG996 Main Bearing Cap Puller
RG8126 –UN–20NOV97
Installing JDG996 Puller
A—JDG996 Puller
B—Tip
C—Cap Screws
NOTE: A drop in oil pressure, engine knock, or excessive
crankshaft end play are indications of main
bearing and main thrust bearing washer failures.
IMPORTANT: Before removing main bearing caps,
check for proper torque on all main
bearings. Also, check each bearing cap
to make sure they are numbered for
reassembly on the same numbered
main bearing web. Keep matched
bearing inserts with their respective
main bearing caps for comparison with
corresponding crankshaft journal to
check surface wear.
NOTE: When removing main bearings and caps for
crankshaft removal, leave No. 1 and 7 main
bearing caps installed until all connecting rod caps
have been removed.
1. Remove engine oil pan and pick-up tube. (See
REMOVE ENGINE OIL PAN in Group 060.)
2. Remove front timing gear cover. (See REMOVE
TIMING GEAR COVER in this group.)
3. Remove rear oil seal and housing. (See REMOVE
REAR CRANKSHAFT OIL SEAL AND HOUSING
ASSEMBLY in this group.)
4. Remove main bearing cap screws.
5. Install JDG996 Puller (A) so that tip (B) of blind hole
puller legs are below bearing cap half.
6. Tighten hex of actuator pin securely while holding
collet portion of puller leg with second wrench.
7. Tighten both cap screws (C) on cross block finger tight.
Continued on next page
CTM100 (06APR04)
02-040-16
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=212
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