Dodge 2001 Ram 1500 Owner's Manual page 1423

9 - 276 ENGINE 5.9L DIESEL
CRANKSHAFT MAIN BEARINGS (Continued)
Fig. 102 Crankshaft Main Journal Diameter
CRANKSHAFT MAIN JOURNAL DIAMETER
ITEM
MINIMUM DIAMETER
MAXIMUM DIAMETER
Calculate the main bearing journal to bearing
clearance. the clearance specifications are 0.119 mm
(0.00475 inch). If the crankshaft journal is within
limits, replace the main bearings. If not within spec-
ifications, grind the crankshaft to next size and use
oversize bearings.
CRANKSHAFT OIL SEAL -
FRONT
REMOVAL
(1) Disconnect both battery negative cables.
(2) Raise vehicle on hoist.
(3) Partially drain engine coolant into container
suitable for re-use (Refer to 7 - COOLING - STAN-
DARD PROCEDURE).
(4) Lower vehicle.
(5) Remove radiator upper hose.
(6) Disconnect coolant recovery bottle from radia-
tor filler neck and lift bottle off of fan shroud.
(7) Disconnect windshield washer pump supply
hose and electrical connections and lift washer bottle
off of fan shroud.
(8) Remove the fan shroud-to-radiator mounting
bolts.
(9) Remove viscous fan/drive assembly. The fan
drive nut has left handed threads. (Refer to 7 -
COOLING/ENGINE/RADIATOR FAN - REMOVAL).
(10) Remove cooling fan shroud and fan assembly
from the vehicle.
CHART
SPECIFICATION
82.962 mm (3.2662 in.)
83.013 mm (3.2682 in.)
(11) Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
(12) Remove the cooling fan support/hub from the
front of the engine (Fig. 103).
(13) Raise the vehicle on hoist.
(14) Remove the crankshaft damper (Fig. 104).
(15) Remove the gear cover-to-housing bolts and
gently pry the cover away from the housing, taking
care not to mar the gasket surfaces.
(16) Support the cover on a flat work surface with
wooden blocks (Fig. 105), and using a suitable punch
and hammer, drive the old seal out of the cover from
the outside of the cover (Fig. 105).
Fig. 103 Fan Support Hub Assembly—Removal/
Installation
1 - FAN SUPPORT/HUB
2 - FAN PULLEY
Fig. 104 Crankshaft Damper—Removal/Installation
1 - DAMPER
2 - BOLT
BR/BE