Dodge Ram Truck 1500-2500-3500. Manual — part 1327
9. Install the connecting rods and measure side clearance. (Refer to 9 - ENGINE/ENGINE BLOCK/CONNECTING
ROD BEARINGS - STANDARD PROCEDURE).
10. Position the oil pan gasket/windage tray, using a
new o-ring, install the oil pickup tube. Torque the
bolt to 28N·n (20 ft. lbs.) torque the nuts to 28N·m
(20 ft. lbs.).
11. Install the oil pan. Torque the retaining bolts to 15
N·m (11 ft. lbs.) in the sequence shown.
12. Install the engine (Refer to 9 - ENGINE -
INSTALLATION).
BEARINGS - CRANKSHAFT MAIN
STANDARD PROCEDURE - CRANKSHAFT MAIN BEARING - FITTING
MAIN BEARING JOURNAL DIAMETER (CRANKSHAFT REMOVED)
Crankshaft removed from the cylinder block.
Clean the oil off the main bearing journal.
Determine the maximum diameter of the journal with a micrometer. Measure at two locations 90° apart at each end
of the journal.
The maximum allowable taper is 0.008mm (0.0004 inch.) and maximum out of round is 0.005mm (0.002 inch). Com-
pare the measured diameter with the journal diameter specification (Main Bearing Fitting Chart). Select inserts
required to obtain the specified bearing-to-journal clearance.
CRANKSHAFT MAIN BEARING SELECTION
The main bearings are “select fit” to achieve proper oil
clearances. For main bearing selection, the crankshaft
position sensor target wheel has grade identification
marks stamped into it (2). These marks are read from
left to right, corresponding with journal number 1, 2, 3,
4 and 5. The crankshaft position sensor target wheel
(2) is mounted to the number 8 counter weight (1) on
the crankshaft.
NOTE: Service main bearings are coded. These codes identify what size (grade) the bearing is.
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ENGINE - 4.7L - SERVICE INFORMATION
DR/DH
MAIN BEARING SELECTION CHART - 4.7L
GRADE
SIZE mm (in.)
FOR USE WITH
MARKING
JOURNAL SIZE
A
0.008 mm U/S
63.488–63.496 mm
(0.0004 in.) U/S
(2.4996–2.4999 in.)
B
NOMINAL
63.496–63.504 mm
(2.4999–2.5002 in.)
C
0.008 mm O/S
63.504–63.512 mm
(0.0004 in.) O/S
(2.5002–2.5005 in.)
INSPECTION
Wipe the inserts clean and inspect for abnormal wear
patterns and for metal or other foreign material imbed-
ded in the lining. Normal main bearing insert wear pat-
terns are illustrated.
NOTE: If any of the crankshaft journals are scored,
the crankshaft must be repaired or replaced.
Inspect the back of the inserts for fractures, scrapings
or irregular wear patterns.
Inspect the upper insert locking tabs for damage.
Replace all damaged or worn bearing inserts.
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ENGINE - 4.7L - SERVICE INFORMATION
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SEAL - CRANKSHAFT OIL - FRONT
REMOVAL
1. Disconnect negative cable from battery.
2. Remove accessory drive belt (Refer to 7 - COOL-
ING/ACCESSORY
DRIVE/DRIVE
BELTS
-
REMOVAL).
3. Remove A/C compressor mouning fasteners and
set aside.
4. Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
5. Remove upper radiator hose.
6. Disconnect electrical connector for fan mounted
inside radiator shroud.
7. Remove radiator shroud attaching fasteners.
NOTE: Transmission cooler line snaps into shroud
lower right hand corner.
8. Remove radiator cooling fan and shroud (Refer to
7
-
COOLING/ENGINE/RADIATOR
FAN
-
REMOVAL).
9. Remove crankshaft damper bolt.
10. Remove damper using Special Tools 8513 Insert
and 1026 Three Jaw Puller (2).
11. Using Special Tool 8511 (1), remove crankshaft
front seal.
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ENGINE - 4.7L - SERVICE INFORMATION
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INSTALLATION
CAUTION: To prevent severe damage to the Crank-
shaft, Damper or Special Tool 8512, thoroughly
clean the damper bore and the crankshaft nose
before installing Damper.
1. Using Special Tool 8348 and 8512 (2,3), install
crankshaft front seal.
2. Install vibration damper (Refer to 9 - ENGINE/EN-
GINE BLOCK/VIBRATION DAMPER - INSTALLA-
TION).
3. Install radiator cooling fan and shroud (Refer to 7 -
COOLING/ENGINE/RADIATOR FAN - INSTALLA-
TION).
4. Install upper radiator hose.
5. Install A/C compressor and tighten fasteners to 54
N·m (40 ft. lbs.).
6. Install accessory drive belt refer (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
7. Refill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
8. Connect negative cable to battery.
SEAL - CRANKSHAFT OIL - REAR
DIAGNOSIS AND TESTING - REAR SEAL AREA LEAKS
Since it is sometimes difficult to determine the source of an oil leak in the rear seal area of the engine, a more
involved inspection is necessary. The following steps should be followed to help pinpoint the source of the leak.
If the leakage occurs at the crankshaft rear oil seal area:
1. Disconnect the battery.
2. Raise the vehicle.
3. Remove torque converter or clutch housing cover and inspect rear of block for evidence of oil. Use a black light
to check for the oil leak:
a. Circular spray pattern generally indicates seal leakage or crankshaft damage.
b. Where leakage tends to run straight down, possible causes are a porous block, camshaft bore cup plugs, oil
galley pipe plugs, oil filter runoff, and main bearing cap to cylinder block mating surfaces. See Engine, for
proper repair procedures of these items.
4. If no leaks are detected, pressurized the crankcase as outlined in the section, Inspection (Engine oil Leaks in
general)
CAUTION: Do not exceed 20.6 kPa (3 psi).
5. If the leak is not detected, very slowly turn the crankshaft and watch for leakage. If a leak is detected between
the crankshaft and seal while slowly turning the crankshaft, it is possible the crankshaft seal surface is damaged.
The seal area on the crankshaft could have minor nicks or scratches that can be polished out with emery cloth.
DR/DH
ENGINE - 4.7L - SERVICE INFORMATION
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