2006 DODGE RAM SRT-10 service

13. Remove the head bolts from each cylinder head,
using the sequence provided, and remove cylin-
der heads. Discard the cylinder head gasket.
CLEANING
Clean all surfaces of cylinder block and cylinder heads.
Clean cylinder block front and rear gasket surfaces using a suitable solvent.
INSPECTION
1. Inspect the cylinder head for out-of-flatness, using a straightedge and a feeler gauge. If tolerances exceed
0.0508 mm (0.002 in.) replace the cylinder head.
2. Inspect the valve seats for damage. Service the valve seats as necessary.
3. Inspect the valve guides for wear, cracks or looseness. If either condition exist, replace the cylinder head.
4. Inspect pushrods. Replace worn or bent pushrods.

VALVES & SEATS - INTAKE/EXHAUST
DESCRIPTION
DESCRIPTION - VALVE GUIDES
The valve guides are made of powdered metal and are pressed into the cylinder head. The guides are not replace-
able or serviceable, and valve guide reaming is not recommended. If the guides are worn beyond acceptable limits,
replace the cylinder heads.
DESCRIPTION
Both the intake and exhaust valves are made of steel. The intake valve is 50.93 mm (2.00 inches) in diameter and
the exhaust valve is 39.53 mm (1.55 inches) in diameter. All valves use three bead lock keepers to retain the
springs and promote valve rotation.
STANDARD PROCEDURE - REFACING
NOTE: Valve seats that are worn or burned can be reworked, provided that correct angle and seat width are
maintained. Otherwise the cylinder head must be replaced.
NOTE: When refacing valves and valve seats, it is important that the correct size valve guide pilot be used
for reseating stones. A true and complete surface must be obtained.
1. Using a suitable dial indicator measure the center of the valve seat Total run out must not exceed 0.051 mm
(0.002 in).
2. Apply a small amount of Prussian blue to the valve seat, insert the valve into the cylinder head, while applying
light pressure on the valve rotate the valve. Remove the valve and examine the valve face. If the blue is trans-
ferred below the top edge of the valve face, lower the valve seat using a 15 degree stone. If the blue is trans-
ferred to the bottom edge of the valve face, raise the valve seat using a 65 degree stone.
3. When the seat is properly positioned the width of the intake seat must be 1.018 - 1.62 mm (0.0464 - 0.0637 in.)
and the exhaust seat must be 1.48 - 1.92 mm (0.058 - 0.075 in.).
4. Check the valve spring installed height after refacing the valve and seat.Theinstalledheightforbothintakeand
exhaust valve springs must not exceed 46.0 mm (1.81 in.).
VALVE FACE AND VALVE SEAT ANGLE CHART
DESCRIPTION SPECIFICATION
SEAT WIDTH
INTAKE 1.018 - 1.62 mm
(0.0464 - 0.0637 in.)
EXHAUST 1.48 - 1.92 mm
(0.058 - 0.075 in.)
FA C E A N G L E
(INT. AND EXT.) 45° - 45
1⁄2°
SEAT ANGLE
(INT. AND EXT.) 44
1⁄2° - 45°

7. Remove cylinder head cover (1) using the
sequence shown (Refer to 9 - ENGINE/CYLINDER
HEAD/CYLINDER HEAD COVER(S) - REMOVAL).
CAUTION: The piston must be at TDC, and both
valves closed on the cylinder to be serviced.
NOTE: If removing intake valve spring, install spe-
cial tool# 9070, pushrod retaining plate (1), to
retain the intake pushrods (2).

18. Install a long bolt into front of camshaft to aid in
removal of the camshaft. Remove camshaft, being
careful not to damage cam bearings with the cam
lobes.
INSPECTION
1. The cam bearings are not serviceable. Do not attempt to replace cam bearings for any reason.
INSTALLATION
INSTALLATION - CAMSHAFT CORE HOLE PLUG
1. Clean core hole in block.
NOTE: Do not apply adhesive to the new core hole plug. A new plug will have adhesive pre-applied.
2. Install a new core hole plug at the rear of camshaft, using suitable flat faced tool. The plug must be fully seated
on the cylinder block shoulder.

BEARINGS - CRANKSHAFT MAIN
STANDARD PROCEDURE - CRANKSHAFT MAIN BEARING - FITTING
MAIN BEARING JOURNAL DIAMETER (CRANKSHAFT REMOVED)
Crankshaft removed from the cylinder block.
Clean the oil off the main bearing journal.
Determine the maximum diameter of the journal with a micrometer. Measure at two locations 90° apart at each end
of the journal.
The maximum allowable taper is 0.008mm (0.0004 inch.) and maximum out of round is 0.005mm (0.0002 inch).
Compare the measured diameter with the journal diameter specification (Main Bearing Fitting Chart). Select inserts
required to obtain the specified bearing-to-journal clearance.
CRANKSHAFT MAIN BEARING SELECTION
The main bearings are “select fit” to achieve proper oil clearances. For main bearing selection, the crankshaft coun-
terweight has grade identification marks stamped into it. These marks areread from left to right, corresponding with
journalnumber1,2,3,4and5.
NOTE: Service main bearings are coded. These codes identify what size (grade) the bearing is.
MAIN BEARING SELECTION CHART - 5.7L
GRADE SIZE mm (in.) FOR USE WITH
MARKING JOURNAL SIZE
A0.008 mm U/S 64.988–64.995 mm
(0.0004 in.) U/S (2.5585– 2.5588in.)
BNOMINAL 64.996–65.004 mm
(2.5588–2.5592 in.)
C0.008 mm O/S 65.005–65.012 mm
(0.0004 in.) O/S (2.5592–2.5595 in.)
INSPECTION
Wipe the inserts clean and inspect for abnormal wear
patterns and for metal or other foreign material imbed-
ded in the lining. Normal main bearing insert wear pat-
terns are illustrated.
NOTE: If any of the crankshaft journals are scored,
the crankshaft must be repaired or replaced.
Inspect the back of the inserts for fractures, scrapings
or irregular wear patterns.
Inspect the upper insert locking tabs for damage.
Replace all damaged or worn bearing inserts.

PISTON & CONNECTING ROD
DESCRIPTION
CAUTION: Do not use a metal stamp to mark connecting rods as damage may result, instead use ink or a
scratch awl.
The pistons are made of a high strength aluminum alloy. Piston skirts are coated with a solid lubricant (Molykote) to
reduce friction and provide scuff resistance. The piston top ring groove and land is anodized. The connecting rods
are made of forged powdered metal, with a “fractured cap” design. A pressedfit piston pin is used to attach the
piston and connecting rod.
STANDARD PROCEDURE - PISTON FITTING
1. To correctly select the proper size piston, a cylinder bore gauge, capable of reading in 0.003 mm ( .0001 in.)
INCREMENTS is required. If a bore gauge is not available, do not use an insidemicrometer.
2. Measure the inside diameter of the cylinder bore at a point 38.0 mm (1.5 inches) below top of bore. Start per-
pendicular (across or at 90 degrees) to the axis of the crankshaft at point Aand then take an additional bore
reading 90 degrees to that at point B.
3. The coated pistons will be serviced with the piston pin and connecting rod pre-assembled. The piston-rod assem-
bly is specific for the left cylinder bank ( odd numbered) and the right cylinder bank ( even numbered) and must
not be interchanged.

LUBRICATION
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - CHECKING ENGINE OIL PRESSURE
1. Remove oil pressure sending unit and install gauge assembly C-3292.
2. Run engine until thermostat opens.
3. Oil Pressure:
Curb Idle–25 kPa (4 psi) minimum
3000 rpm–170 - 758 kPa (25 - 110 psi)
4. If oil pressure is 0 at idle, shut off engine. Check for a clogged oil pick-up screen or a pressure relief valve stuck
open.
DIAGNOSIS AND TESTING - ENGINE OIL LEAK
Begin with a thorough visual inspection of the engine, particularly at thearea of the suspected leak. If an oil leak
source is not readily identifiable, thefollowingstepsshouldbefollowed:
1. Do not clean or degrease the engine at this time because some solvents maycause rubber to swell, temporarily
stopping the leak.
2. Add an oil soluble dye (use as recommended by manufacturer). Start the engine and let idle for approximately 15
minutes. Check the oil dipstick to make sure the dye is thoroughly mixed as indicated with a bright yellow color
under a black light.
3. Using a black light, inspect the entire engine for fluorescent dye, particularly at the suspected area of oil leak. If
the oil leak is found and identified, repair per service manual instructions.
4. If dye is not observed, drive the vehicle at various speeds for approximately 24 km (15 miles), and repeat inspec-
tion.If the oil leak source is not positively identified at this time, proceed with the air leak detection test
method.
Air Leak Detection Test Method
1. Remove the PCV valve from the IAFM. Cap or plug the PCV valve grommet.
2. Attach an air hose with pressure gauge and regulator to the dipstick tube.
CAUTION: Do not subject the engine assembly to more than 20.6 kPa (3 PSI) of test pressure.
3. Gradually apply air pressure from 1 psi to 2.5 psi maximum while applyingsoapy water at the suspected source.
Adjust the regulator to the suitable test pressure that provide the best bubbles which will pinpoint the leak
source. If the oil leak is detected and identified, repair per service manual procedures.
4. If the leakage occurs at the rear oil seal area, refer to the section, Inspection for Rear Seal Area Leak.
5. If no leaks are detected, turn off the air supply and remove the air hose and all plugs and caps. Install the PCV
valve.
6. Clean the oil off the suspect oil leak area using a suitable solvent. Drive the vehicle at various speeds approx-
imately 24 km (15 miles). Inspect the engine for signs of an oil leak by usinga black light.
INSPECTION FOR REAR SEAL AREA LEAKS
Since it is sometimes difficult to determine the source of an oil leak in therear seal area of the engine, a more
involved inspection is necessary. The following steps should be followedto help pinpoint the source of the leak.
If the leakage occurs at the crankshaft rear oil seal area:
1. Disconnect the battery.
2. Raise the vehicle.
3. Remove torque converter or clutch housing cover and inspect rear of block for evidence of oil. Use a black light
to check for the oil leak:
a. Circular spray pattern generally indicates seal leakage or crankshaftdamage.

OIL
STANDARD PROCEDURE - ENGINE OIL SERVICE
The engine oil level indicator is located at the left hand of the engine on the 5.7L engines.
CRANKCASE OIL LEVEL INSPECTION
CAUTION: Do not overfill crankcase with engine oil, pressure loss or oil foaming can result.
Inspect engine oil level approximately every 800 kilometers (500 miles).Unless the engine has exhibited loss of oil
pressure, run the engine for about ten minutes before checking oil level. Checking engine oil level on a cold engine
is not accurate.
To ensure proper lubrication of an engine, the engine oil must be maintained at an acceptable level. The acceptable
levels are indicated between the ADD and SAFE marks on the engine oil dipstick.
1. Position vehicle on level surface.
2. With engine OFF, allow approximately five minutes for oil to settle to bottom of crankcase, remove engine oil
dipstick.
3. Wipe dipstick clean.
4. Install dipstick and verify it is seated in the tube.
5. Remove dipstick, with handle held above the tip, take oil level reading.
6. Add oil only if level is below the ADD mark on dipstick.
ENGINE OIL CHANGE
Change engine oil at mileage and time intervals described in Maintenance Schedules (Refer to LUBRICATION &
MAINTENANCE/MAINTENANCESCHEDULES - DESCRIPTION).
Run engine until achieving normal operating temperature.
1. Position the vehicle on a level surface and turn engine off.
2. Hoist and support vehicle on safety stands.
3. Remove oil fill cap.
4. Place a suitable drain pan under crankcase drain.
5. Remove drain plug from crankcase and allow oil to drain into pan. Inspectdrain plug threads for stretching or
other damage. Replace drain plug if damaged.
6. Install drain plug in crankcase. Torque to 34 Nꞏm ( 25 ft. lbs.).
7. Lower vehicle and fill crankcase with specified type and amount of engine oil described in this section.
8. Install oil fill cap.
9. Start engine and inspect for leaks.
10. Stop engine and inspect oil level.
USED ENGINE OIL DISPOSAL
Care should be exercised when disposing used engine oil after it has been drained from a vehicle engine. Refer to
the WARNING at beginning of this section.