Dodge Sprinter. Manual — part 225
CAUTION: Do not drive cup plug into the casting as
restricted cooling can result and cause serious
engine problems.
Thoroughly clean inside of cup plug hole in cylin-
der block or head. Be sure to remove old sealer.
Lightly coat inside of cup plug hole with Mopar
t
Stud and Bearing Mount. Make certain the new plug
is cleaned of all oil or grease. Using proper drive
plug, drive plug into hole so that the sharp edge of
the plug is at least 0.5 mm (0.020 in.) inside the
lead-in chamfer.
It is not necessary to wait for curing of the sealant.
The cooling system can be refilled and the vehicle
placed in service immediately.
STANDARD PROCEDURE - MEASURING CYLIN-
DER BORES
NOTE: This must be done with engine completely
disassembled.
(1) Thoroughly clean all cylinder bores with appro-
priate cleaning solvent.
(2) Measure each cylinder at the three measuring
points shown (Fig. 31).
(3) Using the three measurment point, measure
cylinder in the longitudinal and in the transverse
direction (Fig. 31).
Fig. 30 CORE HOLE PLUG REMOVAL
1 - CYLINDER BLOCK
2 - REMOVE PLUG WITH PLIERS
3 - STRIKE HERE WITH HAMMER
4 - DRIFT PUNCH
5 - CUP PLUG
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(4) Use the measurment and table below to group
cylinder bores:
Standard size
88.0 mm
Group code letter A
88.000-88.006 mm
Group code letter X
88.006-88.012 mm
Group code letter B
88.012-88.018 mm
Wear limit in longitudinal
in transverse direction
0.020 mm
Permissible variation of
cylinder shape (when
new)
0.000-0.014 mm
CRANKSHAFT
DESCRIPTION
The engine features a forged crankshaft supported
by six bearings. The bearing caps are machined
together with the crankshaft and must not be inter-
changed. The bearing surfaces are induction hard-
ened. The connecting rods and main bearing journals
are filleted. An optional vibration damper with a sec-
ond pulley is used to drive an additional A/C com-
pressor.
STANDARD PROCEDURE - MEASURE CRANK-
SHAFT AND BLOCK JOURNALS
NOTE: After any bearing damage occurred, remove
all debris which is present in the main oil gallery,
connecting rod bores, and in the crankshaft and oil
galleries. Include removal of the inserting steel ball
of the main oil gallery before cleaning.
(1) Remove crankshaft (Refer to 9 - ENGINE/EN-
GINE BLOCK/CRANKSHAFT - REMOVAL).
(2) Clean all engine parts thoroughly.
CAUTION: After bearing has damage has occurred,
replace connecting rods which have suffered over-
heating because of bearing damage. The connect-
ing rod must not have any cross scores and
notches.
(3) Inspect connecting rod. If damage is present,
inspect crankshaft, replace as necessary.
(4) Inspect crankcase.
Fig. 31 MEASURING CYLINDER BORES
1 - MEASURING POINT OF CYLINDER BORE
2 - MEASURING POINT OF CYLINDER BORE
3 - MEASURING POINT OF CYLINDER BORE
1a - UPPER REVERSAL POINT OF #1 PISTON RING
1b - BOTTOM DEAD CENTER OF PISTON
1c - BOTTOM REVERSAL POINT OF OIL SCRAPER RING
1A - LONGITUDINAL DIRECTION
1B - TRANSVERSE PDIRECTION
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ENGINE
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(5) Inspect standard size of crankshaft bearing
shells.
(6) Inspect crankshaft bearing cap.
(7) Mount crankshaft radially.
(8) Inspect crankshaft bearing play.
NOTE: Radial mounting of the main bearings of
standard size crankshaft is possible by assigning
the color-coded bearing shells.
ASSIGN CRANKSHAFT BEARING SHELLS
The oil pan rail of the cylinder block is marked
with chisel punches indicating what bearing shell are
used.
(9) Assign crankshaft bearing shells.
(10) Mount crankshaft axially.
(11) Inspect crankshaft bearing play.
REMOVAL
(1) Remove engine (Refer to 9 - ENGINE -
REMOVAL).
(2) Remove
timing
case
cover
(Refer
to
9
-
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL)
(3) Remove end cover. (Refer to 9 - ENGINE/EN-
GINE BLOCK/CRANKSHAFT OIL SEAL - REAR -
REMOVAL).
(4) Remove pistons (Refer to 9 - ENGINE/ENGINE
BLOCK/PISTON
&
CONNECTING
ROD
-
REMOVAL).
CAUTION: The crankshaft bearing caps are num-
bered consecutively, beginning with the first crank-
shaft bearing cap at the front of the engine.
Attention must be paid to the way crankshaft bear-
ing caps fit.
(5) Unbolt crankshaft bearing caps (Fig. 32).
(6) Inspect crankshaft bearing caps and bolts for
wear and stretching.
(7) Remove crankshaft.
INSTALLATION
CAUTION: Oil the bearing shells before inserting
crankshaft.
CAUTION: Oil grooves in the thrust washers must
point toward the thrust collars of the crankshaft.
CAUTION: Thrust washers in the bearing cap each
have two retaining lugs as a anti-twist lock.
Fig. 32 CRANKSHAFT ASSEMBLY
1 - BEARING HALVES IN ENGINE BLOCK
2 - THRUST WASHERS IN ENGINE BLOCK
3 - CRANKSHAFT
4 - BEARING HALVES IN MAIN BEARING CAPS
5 - MAIN BEARING CAPS
6 - THRUST WASHERS IN MAIN BEARING CAPS
7 - MAIN BEARING BOLTS
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CAUTION: Oil thread and head contact surfaces of
bolts that retain the crankshaft bearing caps;
tighten bolts from inside to outside, beginning at
the fit bearing. Rotate crankshaft to check clear-
ance.
(1) Install crankshaft.
CAUTION: The crankshaft bearing caps are num-
bered consecutively, beginning with the first crank-
shaft bearing cap at the front of the engine.
Attention must be paid to the way the crankshaft
bearing caps fit. If correctly installed, the lug, or
raised boss, on the crankshaft bearing cap is point-
ing to the left when viewed in the direction of travel
(intake side).
(2) Install the crankshaft bearing caps. Tighten
bolts in two stages. 55N·m (40.5 lbs. ft.), then 90°.
(3) Install the pistons (Refer to 9 - ENGINE/EN-
GINE BLOCK/PISTON & CONNECTING ROD -
INSTALLATION).
(4) Install the end cover (Refer to 9 - ENGINE/EN-
GINE BLOCK/CRANKSHAFT OIL SEAL - REAR -
INSTALLATION).
(5) Install the timing case cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - INSTALLATION).
(6) Install the engine (Refer to 9 - ENGINE -
INSTALLATION).
(7) Fill the crankcase with the correct engine oil,
to the proper level. Refer to the owners manual for
specifications.
(8) Fill the cooling system with the proper coolant,
to the proper level (Refer to 7 - COOLING/ENGINE/
COOLANT - STANDARD PROCEDURE).
(9) Connect the negative battery cable.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS, OR FAN. DO
NOT WEAR LOOSE CLOTHES.
(10) Start engine and inspect for leaks. Care must
be taken to observe the fuel system warning (Refer to
14 - FUEL SYSTEM - WARNING).
CRANKSHAFT OIL SEAL -
REAR
REMOVAL
This must be done with the transmission removed
from the vehicle.
(1) Disconnect the negative battery cable.
(2) Raise and support the vehicle.
(3) Drain the engine oil.
NOTE: Loosen all of the oil pan bolts to assure that
the oil pan gasket is not damaged when removing
the rear main oil seal and end cover assembly.
NOTE: Inspect the oil pan gasket for damage. If the
oil pan gasket is damaged, remove the oil pan and
replace the oil pan gasket.
(4) Loosen the oil pan bolts.
(5) Remove the flywheel.
CAUTION: Care must be taken when removing the
rear main seal and adaptor assembly. Failure to do
so will result in damage to the oil pan gasket.
(6) Remove the rear main seal/adaptor retaining
bolts and carefully pry the adaptor from the crank-
case at the adaptor shoulders (Fig. 33).
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