Dodge 2001 Ram 1500 Owner's Manual page 1422

BR/BE
CONNECTING ROD BEARINGS (Continued)
Fig. 99 Connecting Rod Journal Diameter Limits
CONNECTING ROD JOURNAL DIAMETER
LIMITS CHART
DESCRIPTION
CRANKSHAFT ROD
JOURNAL DIAMETER
OUT-OF-ROUND
TAPER
BEARING CLEARANCE
If the crankshaft is within limits, replace the bear-
ing. If the crankshaft is out of limits, grind the
crankshaft to the next smaller size and use oversize
rod bearings.
CRANKSHAFT
DESCRIPTION
The crankshaft (Fig. 100) is a forged steel, inte-
grally balanced unit. It is supported by seven main
bearings, with position number six designated as the
thrust journal. The crankshaft is held in place by
main caps and 12 mm capscrews. The crankshaft
also has internal cross drillings to supply the con-
necting rods with engine oil.
CRANKSHAFT MAIN
BEARINGS
STANDARD PROCEDURE—MAIN BEARING
CLEARANCE
Inspect the main bearing bores for damage or
abnormal wear.
Install the crankshaft main bearings and measure
main bearing bore diameter with the main bolts
tightened to 176 N·m (130 ft. lbs.) torque (Fig. 101).
MEASUREMENT
MINIMUM 68.962 mm (2.715 in.)
MAXIMUM 69.013 mm (2.717 in.)
MAXIMUM 0.050 mm (0.002 in.)
MAXIMUM 0.013 mm (0.0005 in.)
MAXIMUM 0.089 mm (0.0035 in.)
ENGINE 5.9L DIESEL
Fig. 100 Crankshaft
Fig. 101 Crankshaft Main Bearing Bore Diameter
1 - MAIN BEARING CAPS
MAIN BEARING BORE DIAMETER CHART
ITEM
A
Measure the diameter of the main journal at the
locations shown (Fig. 102). Calculate the average
diameter for each side of the journal.
9 - 275
MAIN BEARING BORE
DIAMETER (MAXIMUM)
83.106 mm 3.2719 in.)