Crankshaft Main Bearings Standard Procedure - Crankshaft Main Bearing Fitting - Dodge Intrepid Service Manual

LH
CRANKSHAFT (Continued)
Fig. 53 Thrust Washer - Installation
1 - FRONT THRUST WASHER
(7) Install the inside main bearing cap bolts and
tighten to 20 N·m + 1/4 Turn (15 ft. lbs. + 1/4 Turn)
(Fig. 50).
(8) Measure crankshaft end play (Refer to 9 -
ENGINE/ENGINE BLOCK/CRANKSHAFT - STAN-
DARD PROCEDURE).
(9) Install connecting rods and measure side clear-
ance (Refer to 9 - ENGINE/ENGINE BLOCK/CON-
NECTING ROD BEARINGS
PROCEDURE).
(10) Install windage tray (Fig. 49). Lubricate bolts
with engine oil and tighten to 27 N·m + 1/4 Turn (20
ft. lbs. + 1/4 turn).
(11) Install the main cap tie (horizontal) bolts and
tighten to 28 N·m (250 in. lbs.) (Fig. 50).
(12) Install rear crankshaft oil seal retainer and
oil seal (Refer to 9 - ENGINE/ENGINE BLOCK/
CRANKSHAFT REAR OIL SEAL RETAINER -
INSTALLATION) (Refer to 9 - ENGINE/ENGINE
BLOCK/CRANKSHAFT
INSTALLATION).
(13) Install oil pump assembly (Refer to 9 -
ENGINE/LUBRICATION/OIL PUMP - INSTALLA-
TION).
(14) Install crankshaft sprocket (Refer to 9 -
ENGINE/VALVE TIMING/TIMING
SPROCKETS - INSTALLATION).
(15) Install timing chain (Refer to 9 - ENGINE/
VALVE TIMING/TIMING CHAIN AND SPROCKETS
- INSTALLATION).
(16) Install timing chain cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING CHAIN COVER -
INSTALLATION).
- STANDARD
OIL SEAL - REAR
CHAIN AND
(17) Install cylinder head covers (Refer to 9 -
ENGINE/CYLINDER
COVER(S) - INSTALLATION).
(18) Install idler pulley bracket for accessory drive
belt.
(19) Install oil pick-up tube and O-ring.
(20) Install oil pan and oil filter (Refer to 9 -
ENGINE/LUBRICATION/OIL PAN - INSTALLA-
TION).
(21) Install oil dipstick tube.
(22) Install engine assembly (Refer to 9 - ENGINE
- INSTALLATION).
(23) Fill engine crankcase with proper oil to cor-
rect level (Refer to 9 - ENGINE/LUBRICATION/OIL
- STANDARD PROCEDURE).
CRANKSHAFT MAIN
BEARINGS
STANDARD PROCEDURE - CRANKSHAFT MAIN
BEARING FITTING
The main bearings are "select fit" to achieve proper
oil clearances. For main bearing selection, the block
and crankshaft have grade identification marks.
The grade marks for the cylinder block main bear-
ing bore grade is located on the pan rail just below
the left side engine mount bracket (Fig. 55). These
marks are read left to right, corresponding to main
bore 1, 2, 3, 4.
The grade marks for the crankshaft are located on
the rearmost crankshaft counter weight as shown in
(Fig. 54). The crankshaft journal grade marks are
read left to right, corresponding with journal number
1, 2, 3, 4.
Refer to the
CHART—2.7L to properly select the main bearings.
For an example, if the main bore grade is 3 and the
-
journal grade is 2, the proper select fit bearing would
be (2) +0.003 mm (+0.0002 in.).
NOTE: Service main bearings have a number from
1–5 marked in ink on the bearing surface (Fig. 56).
For verification, use the MAIN BEARING SELEC-
TION CHART—2.7L for number to size identification.
The upper main bearing has a oil feed hole and a
center groove to allow lubrication of the main journal
and must be properly positioned in the block.
NOTE: Although cylinder bores are graded for size,
there is only one piston size.
ENGINE 2.7L 9 - 45
HEAD/CYLINDER
MAIN BEARING SELECTION
HEAD