Dodge RAM 1500 1998 Owner's Manual page 1496

DR
CONNECTING ROD BEARINGS (Continued)
Fig. 63 Connecting Rod Journal Diameter Limits
CONNECTING ROD JOURNAL DIAMETER
LIMITS CHART
DESCRIPTION
CRANKSHAFT ROD JOURNAL
DIAMETER
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 AND GEAR
DESCRIPTION
The crankshaft (Fig. 64) is a forged steel, integrally
balanced unit. It is supported by seven main bear-
ings, 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.
REMOVAL - GEAR
(1) Remove the gear housing cover. (Refer to 9 -
ENGINE/VALVE TIMING/GEAR HOUSING COVER
- REMOVAL)
(2) Split the gear and remove it from the crank-
shaft.
INSTALLATION - GEAR
(1) Remove all burrs and make sure the gear sur-
face on the end of the crankshaft is smooth.
(2) If removed, install a new alignment pin. Drive
the pin in using a ball- peen hammer, leaving it pro-
MEASUREMENT
Min. 68.96 mm (2.715 in.)
Max. 69.01 mm (2.717 in.)
Min. 0.04 mm (.002 in.)
Max. 0.12 mm (0.005 in.)
ENGINE 5.9L DIESEL
Fig. 64 Crankshaft
truding 1.0 mm (0.039 inch) to 1.5 mm (0.059 inch)
above the crankshaft (Fig. 65).
Fig. 65 Installing Alignment Pin
1 - ALIGNMENT PIN
WARNING: WEAR PROTECTIVE GLOVES TO PRE-
VENT INJURY.
CAUTION: DO NOT heat the gear longer than 45
minutes.
(3) Heat the crankshaft gear for 45 minutes at a
temperature of 149°C (300°F). Do not use torch,
gear failure will occur.
(4) Apply a thin coat of lubricant to the nose of the
crankshaft.
(5) Position the gear with the timing mark out and
install it on the crankshaft using the alignment pin.
Make sure the gear contacts the shoulder.
9 - 273