Crankshaft, Main Bearings, and Flywheel
02
040
22
RG,RG34710,166 –19–05SEP02–1/1
Measure Assembled ID of Bearings and OD of Crankshaft Journals
1. With crankshaft out of cylinder block, install main
bearing inserts and caps (be sure inserts are
installed correctly).
2. Tighten main bearing cap screws to specification.
Specification
Crankshaft Main Bearing Cap
Screws—Final Torque 320 N•m (236 lb-ft)..........................................
3. Measure ID of all bearings with an inside
micrometer and compare measurements with
respective crankshaft main journals.
Specification
Crankshaft Main Bearing—ID
With Bearing 125.071—125.127 mm
(4.9241—4.9263 in.)
...................................................
ID Without Bearing 133.097—133.123 mm
(5.2400—5.2411 in.)
.........................................
NOTE: Inspect and measure assembled ID of
connecting rod bearings. Compare
measurements with connecting rod journal OD
on crankshaft. (See INSPECT AND MEASURE
CONNECTING ROD BEARINGS in Group
030.)
4. Measure OD of all respective crankshaft journals at
several points around journal.
Specification
Crankshaft Main Bearing
Journal—OD 124.983—125.017 mm
(4.9206—4.9219 in.)
...................................................
NOTE: If engine has previously had a major overhaul
and undersized bearing inserts were used,
above listed ID and OD dimensions may not
be the same as those recorded. However, oil
clearance should be within specifications. Oil
clearance is 0.046—0.122 mm (0.0018—
0.0048 in.). The maximum serviceable
clearance is 0.152 mm (0.0060 in.).
Compare crankshaft journal OD measurements to
determine if journal is out-of-round or tapered.
Specification
Crankshaft Main Journal—Max.
Out-of-Round 0.025 mm (0.0010 in.)...................................................
Max. Taper per 25.4 mm (1.0
in.) of Journal Length 0.0025 mm (0.0001 in.).....................................
CTM100 (06APR04)
02-040-22
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=218
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