Chrysler 300M, Dodge Interpid. Manual — part 250
MAIN BEARING SELECTION CHART—3.2/3.5L
Main Bearing Bore Grade
Marks
1
2
3
A
(3)
standard
(2) +003
mm
(+0.0002
in.)
(1)
+0.006
mm
(+0.0003
in.)
Crankshaft
Main Journal
Grade Marks
B
(4)
-0.003
mm
(-0.0002
in.)
(3)
standard
(2) +003
mm
(+0.0002
in.)
C
(5)
-0.006
mm
(-0.0003
in.)
(4)
-0.003
mm
(-0.0002
in.)
(3)
standard
REMOVAL
Bearing caps are not interchangeable and are
marked to insure correct assembly (Fig. 68). Upper
and lower bearing halves are NOT interchangeable.
(1) Remove oil pan. (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - REMOVAL)
(2) Remove oil pick-up tube and windage tray.
(3) Identify bearing caps before removal (Fig. 68).
(4) Remove bearing caps one at a time. Remove
upper half of bearing by inserting Special Main Bear-
ing Tool C-3059 (Fig. 69) into the oil hole of crank-
shaft.
(5) Slowly rotate crankshaft clockwise, forcing out
upper half of bearing shell.
INSTALLATION
Bearing caps are not interchangeable and are
marked to insure correct assembly. Upper and lower
bearing halves are NOT interchangeable (Fig. 70).
CAUTION: Main bearings are select fit. (Refer to 9 -
ENGINE/ENGINE
BLOCK/CRANKSHAFT
MAIN
BEARINGS - STANDARD PROCEDURE)
NOTE: Only one main bearing should be selectively
fitted while all other main bearing caps are properly
tightened.
Fig. 68 Main Bearing Cap Identification
Fig. 69 Removing and Installing Upper Main Bearing
With Special Tool C- 3059
1 - SPECIAL TOOL C-3059
2 - BEARING
3 - SPECIAL TOOL C-3059
4 - BEARING
Fig. 70 Main Bearing Cap Identification
LH
ENGINE
9 - 47
CRANKSHAFT MAIN BEARINGS (Continued)
When installing a new upper bearing shell, slightly
chamfer the sharp edges from the plain side.
(1) Lubricate main bearing with clean engine oil.
(2) Start bearing in place, and insert Main Bearing
Tool C-3059 into oil hole of crankshaft (Fig. 69).
(3) Slowly rotate crankshaft counterclockwise slid-
ing the bearing into position. Remove Special Main
Bearing Tool C-3059.
NOTE: Lubricate main bearing cap bolts with
engine oil before installation.
(4) Lubricate and install lower bearing half and
main cap Tighten bolts finger tight.
(5) For installing thrust washers at the No. 2 main
bearing location, use the following procedure:
(a)
Move crankshaft forward to limit of travel.
Lubricate and install the front thrust washer by
rolling
the
washer
onto
the
machined
shelf
between the No. 2 upper main bulk head and
crankshaft thrust surface (Fig. 71).
(b) Move crankshaft rearward to limit of travel.
Lubricate and install the rear thrust washer by
rolling
the
washer
onto
the
machined
shelf
between the No. 2 upper main bulk head and
crankshaft thrust surface.
The main bearing cap bolts must be tightened in
the proper sequence. First the inner main cap bolts,
secondly the windage tray bolts, lastly the main cap
tie (horizontal) bolts.
(6) Install each main bearing cap and tighten
inner bolts finger tight.
(7) Tighten inner main bearing cap bolts to 20 N·m
+ 1/4 turn (15 ft. lbs. + 1/4 turn).
(8) Measure crankshaft end play. (Refer to 9 -
ENGINE/ENGINE BLOCK/CRANKSHAFT - STAN-
DARD PROCEDURE)
(9) Install windage tray. Lubricate bolts with
engine oil and tighten to 27 N·m + 1/4 turn (20 ft.
lbs. + 1/4 turn).
(10) Install the main cap tie (horizontal) bolts and
tighten to 28 N·m (250 in. lbs.).
(11) Install oil pick-up tube.
(12) Install oil pan. (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - INSTALLATION)
(13) Fill engine crankcase with proper oil to cor-
rect level.
CRANKSHAFT OIL SEAL -
FRONT
REMOVAL
(1) Remove the crankshaft sprocket. (Refer to 9 -
ENGINE/VALVE
TIMING/TIMING
BELT/CHAIN
AND SPROCKETS - REMOVAL)
(2) Tap the dowel pin out of the crankshaft (Fig.
72).
(3) Remove crankshaft seal using Special Tool
6341A (Fig. 73).
CAUTION: Do not nick shaft seal surface or seal
bore.
Fig. 71 Thrust Washer Installation
1 - FRONT THRUST WASHER
Fig. 72 Crankshaft Dowel Pin - Removal/Installation
1 - PIN PUNCH
2 - DOWEL
9 - 48
ENGINE
LH
CRANKSHAFT MAIN BEARINGS (Continued)
(4) Shaft seal lip surface must be free of varnish,
dirt or nicks. Polish with 400 grit paper if necessary.
INSTALLATION
(1) Install crankshaft seal using Special Tool 6342
(Fig. 74).
(2) Install the dowel pin into the crankshaft to 1.2
mm (0.047 in.) protrusion (Fig. 72).
(3) Install the crankshaft sprocket. (Refer to 9 -
ENGINE/VALVE
TIMING/TIMING
BELT/CHAIN
AND SPROCKETS - INSTALLATION)
CRANKSHAFT OIL SEAL -
REAR
REMOVAL
(1) Remove transaxle from vehicle. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - 42LE
- REMOVAL)
(2) Remove drive plate.
(3) Insert a 3/16” wide flat bladed screwdriver
between the dust lip and the metal case of the crank-
shaft seal. Angle the screwdriver (Fig. 75) through
the dust lip against the metal case of the seal. Pry
out seal.
CAUTION: Do not allow the screwdriver blade to
contact the crankshaft seal surface. Contact of the
screwdriver blade against crankshaft edge (cham-
fer) is permitted.
INSTALLATION
CAUTION: If a burr or scratch is present on the
crankshaft edge (chamfer), clean surface using 400
grit sand paper to prevent seal damage during
installation.
Fig. 73 REMOVING CRANKSHAFT OIL SEAL WITH
SPECIAL TOOL
1 - SPECIAL TOOL 6341A
Fig. 74 INSTALLING CRANKSHAFT OIL SEAL WITH
SPECIAL TOOL
1 - SPECIAL TOOL 6342
Fig. 75 Rear Crankshaft Oil Seal Removal - Typical
1 - REAR CRANKSHAFT SEAL
2 - ENGINE BLOCK
3 - ENGINE BLOCK
4 - REAR CRANKSHAFT SEAL METAL CASE
5 - PRY IN THIS DIRECTION
6 - CRANKSHAFT
7 - SCREWDRIVER
8 - REAR CRANKSHAFT SEAL DUST LIP
9 - SCREWDRIVER
LH
ENGINE
9 - 49
CRANKSHAFT OIL SEAL - FRONT (Continued)
(1) Place Special Tool 6926-1 Guide on crankshaft
(Fig. 76). This is a pilot tool with a magnetic base.
(2) Position seal over pilot tool. Assure that lip of
seal is facing towards the crankshaft during installa-
tion. The pilot tool remains on crankshaft during seal
installation.
(3) Using Special Tool 6926-2 Installer, and C-4171
Handle (Fig. 76), drive seal into the retainer housing
until seal is flush with housing surface.
(4) Install drive plate and transaxle. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - 42LE
- INSTALLATION)
CRANKSHAFT REAR OIL SEAL
RETAINER
REMOVAL
(1) Remove crankshaft rear oil seal. (Refer to 9 -
ENGINE/ENGINE
BLOCK/CRANKSHAFT
OIL
SEAL - REAR - REMOVAL)
(2) Remove oil pan. (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - REMOVAL)
(3) Remove seal retainer attaching screws.
(4) Remove seal retainer (Fig. 77).
NOTE: Seal retainer gasket is bonded to the
retainer and must be replaced as an assembly.
INSTALLATION
(1) Clean all sealing surfaces. Replace retainer
assembly if gasket is torn or damaged.
(2) Install seal retainer to block, but do not tighten
attaching screws at this time.
NOTE: The following steps must be performed to
prevent oil leaks at sealing joints.
(3) Attach Special Tools 8225 to pan rail using the
oil pan fasteners (Fig. 78).
NOTE: Make sure the marking “3.2/3.5L” on Special
Tools 8225, is facing towards the cylinder block pan
rail surface (notch on tool is towards the seal
retainer).
(4) While applying firm pressure to the seal
retainer against Special Tools 8225 (Fig. 78), tighten
seal retainer screws to 12 N·m (105 in. lbs.).
(5) Install crankshaft rear oil seal. (Refer to 9 -
ENGINE/ENGINE
BLOCK/CRANKSHAFT
OIL
SEAL - REAR - INSTALLATION)
(6) Install oil pan. (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - INSTALLATION)
Fig. 76 Crankshaft Rear Seal - Installation
1 - C-4171 HANDLE
2 - 6926–2 INSTALLER
3 - 6926–1 GUIDE
4 - SEAL
Fig. 77 Oil Seal Retainer
1 - SCREWS (7)
2 - SEAL RETAINER
9 - 50
ENGINE
LH
CRANKSHAFT OIL SEAL - REAR (Continued)
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