Dodge Ram Truck 1500-2500-3500. Manual — part 1398

INSTALLATION

NOTE: Lubricate the threads of Special Tool 9055
(1) using Mopar

T

Nickel Anti-seize Compound or

equivalent, before beginning crankshaft damper
installation.

1. Raise and support the vehicle.

2. Install crankshaft damper using Special Tool 9055

(1).

3. Install and tighten damper bolt to 176 N·m (130 ft.

lbs.).

4. Install the crankshaft pulley. Tighten crankshaft pul-

ley bolts to 23 N·m (200 in. lbs.).

5. Install the front engine shield.

6. Lower the vehicle.

7. Install accessory drive belt (Refer to 7 - COOLING/

ACCESSORY DRIVE/DRIVE BELTS - INSTALLA-
TION).

8. Install the radiator fan (Refer to 7 - COOLING/EN-

GINE/RADIATOR FAN - INSTALLATION).

9. Install air cleaner cover connecting the CVV hose,

IAT, and air duct to the throttle body housing.

10. Lower vehicle.

SEAL-CRANKSHAFT OIL- FRONT

REMOVAL

1. Disconnect the air inlet duct, IAT sensor, CCV hose

at the throttle body, and remove the air cleaner
housing cover.

2. Remove accessory drive belt (Refer to 7 - COOL-

ING/ACCESSORY

DRIVE/DRIVE

BELTS

-

REMOVAL).

3. Remove crankshaft damper (Refer to 9 - ENGINE/

ENGINE

BLOCK/CRANKSHAFT

DAMPER

-

REMOVAL).

4. Use Special Tool C-4679A (1) to remove crankshaft

oil seal. Be careful not to damage the crankshaft
seal surface of cover.

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ENGINE - 8.3L - SERVICE INFORMATION

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INSTALLATION

1. Install the new seal by using Special Tool MD

998306 (2).

2. Place seal into opening with seal spring towards

the inside of engine. Install seal until it bottoms out
in timing chain cover.

3. Install crankshaft damper (Refer to 9 - ENGINE/

ENGINE BLOCK/VIBRATION DAMPER - INSTAL-
LATION).

4. Install accessory drive belt (Refer to 7 - COOLING/

ACCESSORY DRIVE/DRIVE BELTS - INSTALLA-
TION).

5. Install air cleaner cover connecting the CVV hose,

IAT sensor, and air duct to the throttle body
housing.

SEAL-OIL-REAR-CRANK AND RETAINER

REMOVAL

1. Remove transmission (Refer to 21 - TRANSMIS-

SION/TRANSAXLE/MANUAL - REMOVAL).

2. Remove clutch and flywheel (Refer to 6 - CLUTCH/

CLUTCH DISC - REMOVAL).

NOTE: The oil seal and retainer are serviced as an
assembly.

3. Remove the seal retainer bolts from cylinder block

and oil pan.

4. Remove the oil seal and retainer (1) assembly.

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ENGINE - 8.3L - SERVICE INFORMATION

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INSTALLATION

1. Clean the engine block and retainer. Make sure

surfaces are clean and free of oil.

2. Install Special Tool 9060 (1) (seal guide) onto end

of crankshaft. Align hole in tool with dowel pin on
crankshaft.

3. Carefully position retainer/oil seal (1) to block.

Tighten the retainer bolts to 11 N·m (95 in. lbs.).

4. Install flywheel and clutch (Refer to 6 - CLUTCH/

CLUTCH DISC - INSTALLATION).

5. Install transmission (Refer to 21 - TRANSMISSION/

TRANSAXLE/MANUAL - INSTALLATION).

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ENGINE - 8.3L - SERVICE INFORMATION

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BEARINGS-CRANKSHAFT MAIN

DESCRIPTION

The main bearing caps are not interchangeable and
should be marked at removal to insure correct assem-
bly. Upper and lower main bearing halves are NOT
interchangeable. Lower main bearing halves of No. 1,
No. 2, No. 4, No. 5 and No. 6 are interchangeable.
Upper main bearing halves of No. 1, No. 2, No. 4, No.
5 and No. 6 are interchangeable.

Upper and lower No. 3 bearing halves are flanged to
carry the crankshaft thrust loads and are NOT inter-
changeable with any other bearing halves in the
engine. All bearing cap bolts removed during service
procedures are to be cleaned and oiled before instal-
lation. Bearing shells are available in standard and the
following undersizes: 0.025 mm (0.001 in.), 0.051 mm
(0.002 in.), 0.076 mm (0.003 in.), 0.254 mm (0.010
in.), 0.305 mm (0.012 in.) and 0.508 mm (0.020 in.).
Never install an undersize bearing that will reduce clearance below specifications.

STANDARD PROCEDURE

MEASURING CRANKSHAFT MAIN BEARING CLEARANCE IN-CAR

PLASTIGAGE METHOD

Engine crankshaft bearing clearances can be deter-
mined by use of Plastigage or equivalent. The follow-
ing is the recommended procedure for the use of
Plastigage:

1. Remove oil film from surface to be checked. Plas-

tigage is soluble in oil.

2. The total clearance of the main bearings can only

be determined by removing the weight of the
crankshaft. This can be accomplished by either of
two methods:

PREFERRED METHOD

1. Shimming the bearings adjacent to the bearing to be checked in order to remove the clearance between upper

bearing shell and the crankshaft. This can be accomplished by placing a minimum of 0.254 mm (.010 inch) shim
(e. g. cardboard, matchbook cover, etc.) between the bearing shell and the bearing cap on the adjacent bearings
and tighten bolts to 14-20 N·m (10-15 ft.lb.)

•

When checking No. 1 main bearing. Shim No. 2 main bearing.

•

When checking No. 2 main bearing. Shim No.1 and No. 3 main bearing.

•

When checking No.3 main bearing. Shim No. 2 and No. 4 main bearing.

•

When checking No. 4 main bearing. Shim No. 3 and No. 5 main bearing.

•

When checking No. 5 main bearing. Shim No. 4 and No. 6 main bearing.

•

When checking No. 6 main bearing. Shim No. 5 main bearing.

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ENGINE - 8.3L - SERVICE INFORMATION

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