check engine DODGE RAM SRT-10 2006 Service Repair Manual

INSTALLATION
1. Position oil cooler to mounting position.
2. Install oil cooler fasteners. Tighten to 12 Nꞏm (105
in. lbs.).
3. Connect oil supply (1) and return lines (2) to oil
cooler and.
4. Connect oil cooler coolant hoses (3).
5. Install air cleaner housing assembly, connect throt-
tle body air inlet hose (Refer to 9 - ENGINE/AIR
INTAKE SYSTEM/AIR CLEANER HOUSING -
INSTALLATION).
6. Fill cooling system (Refer to 7 - COOLING/ENGINE
- STANDARD PROCEDURE).
7. Start the engine to circulate and fill the oil cooler.
Shut off the engine and check the oil level. Add oil
as needed.
8. Inspect the oil cooler connections for leaks.

BLOCK-ENGINE
DESCRIPTION
The cylinder block is made of a sand-cast aluminum alloy. The cylinder block has interference-fit cast iron cylinder
liners. The cylinder liners are thermally installed during block manufacturing; they are not serviceable items.
Six iron main bearing caps use four bolts per cap; two vertical and two horizontal. A crankshaft oil scraper is
attached to the main bearing caps via extended main bearing cap bolts and nuts.
STANDARD PROCEDURE - CYLINDER BORE HONING
Before honing, stuff plenty of clean shop towels under
the bores and over the crankshaft to keep abrasive
materials from entering the crankshaft area.
1. Used carefully, the Cylinder Bore Sizing Hone
C-823, equipped with 220 grit stones, is the best
tool for this job. In addition to deglazing, it will
reduce taper and out-of-round, as well as removing
light scuffing, scoring and scratches. Usually, a few
strokes will clean up a bore and maintain the
required limits.
CAUTION: DO NOT use rigid type hones to remove
cylinder wall glaze.
2. Deglazing of the cylinder walls may be done if the
cylinder bore is straight and round. Use a cylinder
surfacing hone, Honing Tool C-3501, equipped with
280 grit stones (C-3501-3810). about 20-60
strokes, depending on the bore condition, will be
sufficient to provide a satisfactory surface. Using
honing oil C-3501-3880, or a light honing oil, avail-
able from major oil distributors.
CAUTION: DO NOT use engine or transmission oil, mineral spirits, or kerosene.
3. Honing should be done by moving the hone up and down fast enough to get a crosshatch pattern. The hone
marks should INTERSECT at 50° to 60° for proper seating of rings.
4. A controlled hone motor speed between 200 and 300 RPM is necessary to obtain the proper crosshatch angle.
The number of up and down strokes per minute can be regulated to get the desired 50° to 60° angle. Faster up
and down strokes increase the crosshatch angle.
5. After honing, it is necessary that the block be cleaned to remove all traces of abrasive. Use a brush to wash
parts with a solution of hot water and detergent. Dry parts thoroughly. Usea clean, white, lint-free cloth to check
that the bore is clean. Oil the bores after cleaning to prevent rusting.
CLEANING
CAUTION: Remove all gasket material from cylinder block using a plastic gasket scraper and MoparBrake
Parts Cleaner or the equivalent, this will prevent damage to the cylinder block.
1. When cleaning the cylinder block, remove the oil gallery plugs at the front and rear of the block.
2. Spray compressed air into all oil gallery passages to ensure they are clear of blockage.
3. Use a wooden or plastic scraper and MOPAR
Brake Parts Cleaner or the equivalent to remove the old gasket.
4. Clean the oil passages in the crankshaft with a brush.

INSPECTION
The cylinder walls should be checked for out-of-round
and taper with Special Tool C-119 (1). If the cylinder
walls are badly scuffed or scored, the cylinder bore
can be machined oversize. Oversize piston and rings
are available.
Measure the cylinder bore at three levels in directions
A and B. Top measurement should be 12 mm (0.50
in.) down and bottom measurement should be 12 mm
(0.50 in.) up from bottom of bore. (Refer to 9 -
ENGINE - SPECIFICATIONS) for cylinder bore and
piston specifications.

MEASURING CONNECTING ROD SIDE CLEARANCE
1. Using a feeler gauge, check connecting rod side
clearance. (Refer to 9 - ENGINE - SPECIFICA-
TIONS) for connecting rod side clearance
specifications.
REMOVAL
NOTE: Pistons and connecting rods are to be
removed as an assembly from top of cylinder
block.
1. Remove engine (Refer to 9 - ENGINE - REMOVAL)
and place in a suitable engine stand.
2. Remove cylinder heads (Refer to 9 - ENGINE/CYL-
INDER HEAD - REMOVAL).
3. Remove oil pan (Refer to 9 - ENGINE/LUBRICA-
TION/OIL PAN - REMOVAL).
4. Remove the oil pump pick up tube (2)

5. Remove the crankshaft oil scraper nuts (1) and oil
scraper (2).
CAUTION: DO NOT use a number stamp or a
punch to mark connecting rods. Damage to con-
necting rod could occur.
6. Inspect connecting rods and connecting rod caps
for cylinder identification (1). Identify them if neces-
sary using a permanent ink or paint marker.
CAUTION: Care must be taken not to damage the
fractured rod and cap joint surfaces, as engine
damage may occur.
NOTE: Do not reuse connecting rod bolts.
7. Remove connecting rod bolts and cap. Push each
piston and rod assembly out the block.
NOTE: Be careful not to nick crankshaft journals.
8. After removal, install bearing cap on the mating
rod.
INSPECTION
CONNECTING ROD
1. Check the connecting rods for twist or bend.
2. Check the condition of the large end. Use an oil stone to remove any nicks and burrs.
3. Check the condition of the pin bore in the small end of the connecting rod.Useanoilstonetoremoveallnicks
and burrs.
PISTON PIN
1. Inspect for free rotation of the piston pin in the piston.

RINGS-PISTON
STANDARD PROCEDURE - MEASURING PISTON RING CLEARANCES
1. Wipe cylinder bore clean. Insert ring and push
down with piston to ensure it is square in bore. The
ring gap measurement must be made with the ring
positioning at least 12 mm (0.50 in.) from bottom of
cylinder bore. Check gap with feeler gauge (1).
(Refer to 9 - ENGINE - SPECIFICATIONS) for pis-
ton ring specifications.
2. Check piston ring side clearance. (Refer to 9 -
ENGINE - SPECIFICATIONS) for piston ring
specifications.
REMOVAL
1. Using a suitable ring expander, remove upper and
intermediate piston rings.
2. Remove the upper oil ring side rail, lower oil ring
side rail and then oil ring expander from piston.
3. Clean ring grooves of any carbon deposits.

BEARINGS-CONNECTING ROD
DESCRIPTION
The bearing caps are not interchangeable and should be paint marked or scribed at removal to insure correct
assembly.
The bearing shells must be installed so that the tangs are in the machined grooves in the rods and caps.
Limits of taper or out-of-round on any crankshaft journals should be held to 0.013 mm (0.0005 in.). Bearings are
available in 0.025 mm (0.001 in.), 0.051 mm (0.002 in.), 0.076 mm (0.003 in.), 0.254 mm (0.010 in.) and 0.305 mm
(0.012 in.) undersize.Install the bearings in pairs. Do not use a new bearing half with an old bearing half. Do
not file the rods or bearing caps.
STANDARD PROCEDURE
CONNECTING ROD BEARING - FITTING
Fit all rods on one bank until complete. Do not alternate from one bank to another, because when the rods are
assembled to pistons correctly, they are not interchangeable from one bank to another.
The bearing caps are not interchangeable and should be marked at removal toinsure correct assembly.
The bearing shells must be installed so that the tangs are in the machined grooves in the rods and caps.
Limits of taper or out-of-round on any crankshaft journals should be held to 0.013 mm (0.0005 in.). Bearings are
available in 0.025 mm (0.001 in.), 0.051 mm (0.002 in.), 0.076 mm (0.003 in.), 0.254 mm (0.010 in.) and 0.305 mm
(0.012 in.) undersize.Install the bearings in pairs. Do not use a new bearing half with an old bearing half. Do
not file the rods or bearing caps.
1. (Refer to 9 - ENGINE/ENGINE BLOCK/CONNECTING ROD BEARINGS - STANDARD PROCEDURE) - Mea-
suring Connecting Rod Bearing Clearance to determine bearing clearance.
2. Before installing the connecting rod cap bolts, the bolt threads shouldbe oiled with engine oil.
3. Install bolts finger tight, then alternately torque each bolt to assemble the cap properly.
4. Tighten the connecting rod bolts to 68 Nꞏm (50 ft. lbs.).
MEASURING CONNECTING ROD BEARING CLEARANCE
Engine crankshaft bearing clearances can be deter-
mined by use of Plastigage (1) or equivalent. The fol-
lowing is the recommended procedure for the use of
Plastigage:
1. Rotate the crankshaft until the connecting rod to be
checked is at the bottom of its stroke.
2. Remove oil film from surface to be checked. Plas-
tigage is soluble in oil.
3. Place a piece of Plastigage (1) across the entire
width of the bearing shell in the bearing cap
approximately 6.35 mm (1/4 inch.) off center and
away from the oil hole. In addition, suspect areas
can be checked by placing plastigage in the suspect area.
4. Before assembling the rod cap with Plastigage in place, the crankshaft must be rotated until the connecting rod
being checked starts moving toward the top of the engine. Only then should the cap be assembled and torqued
to specifications.Do not rotate the crankshaft while assembling the cap or the Plastigage maybe
smeared, giving inaccurate results.

5. Remove the bearing cap and compare the width of
the flattened Plastigage with the metric scale pro-
vided on the package. Locate the band closest to
the same width. This band shows the amount of
clearance in thousandths of a millimeter. Differ-
ences in readings between the ends indicate the
amount of taper present. Record all readings taken.
(Refer to 9 - ENGINE - SPECIFICATIONS).Plasti-
gage generally is accompanied by two scales.
One scale is in inches, the other is a metric
scale.
6. Plastigage is available in a variety of clearance ranges. The 0.025-0.076 mm (.001-.003 inch) is usually the most
appropriate for checking engine bearing proper specifications.

BEARINGS-CRANKSHAFT MAIN
DESCRIPTION
The main bearing caps are not interchangeable and
should be marked at removalto 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 themain bearingscan 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. Thiscanbeaccomplishedbyplacingaminimum of 0.254 mm (.010 inch) shim
(e. g. cardboard, matchbook cover, etc.) between the bearing shell and thebearing cap on the adjacent bearings
and tighten bolts to 14-20 Nꞏm (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.
NOTE: Remove all shims before reassembling engine

ALTERNATIVE METHOD
1. With the weight of the crankshaft being supported
by a jack under the counterweight adjacent to the
bearing being checked.
2. Place a piece of Plastigage across the entire width
of the bearing shell in the cap approximately 6.35
mm (1/4 inch) off center and away from the oil
holes. (In addition, suspect areas can be checked
by placing the Plastigage in the suspect area).
Torque the bearing cap bolts of the bearing being
checked to the proper specifications.
3. Remove the bearing cap and compare the width of
the flattened Plastigage with the metric scale pro-
vided on the package. Locate the band closest to the same width. This band shows the amount of clearance in
thousandths of a millimeter. Differences in readings between the ends indicate the amount of taper present.
Record all readings taken. Refer to Engine Specifications.Plastigage generally is accompanied by two
scales. One scale is in inches, the other is a metric scale.
4. Plastigage is available in a variety of clearance ranges. The 0.025-0.076 mm (.001-.003 inch) is usually the most
appropriate for checking engine bearing proper specifications.