2006 DODGE RAM SRT-10 oil pressure

MANIFOLD - INTAKE
DESCRIPTION
The intake manifold is made of a composite material and features long runners which maximizes low end torque.
The intake manifold uses single plane sealing which consist of eight individual press in place port gaskets to prevent
leaks. Eight studs and two bolts are used to fasten the intake to the head.
DIAGNOSIS AND TESTING - INTAKE MANIFOLD LEAKAGE
An intake manifold air leak is characterized by lower than normal manifoldvacuum. Also, one or more cylinders may
not be functioning.
WARNING: USE EXTREME CAUTION WHEN THE ENGINE IS OPERATING. DO NOT STAND IN ADIRECT LINE
WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR THE FAN. DO NOT WEAR
LOOSE CLOTHING.
1. Start the engine.
2. Spray a small stream of water at the suspected leak area.
3. If a change in RPM is observed the area of the suspected leak has been found.
4. Repair as required.
REMOVAL
1. Disconnect negative cable from battery.
2. Remove resonator assembly and air inlet hose.
3. Disconnect throttle and speed control cables.
4. Disconnect electrical connectors for the following components:
Manifold Absolute Pressure (MAP) Sensor
Intake Air Temperature (IAT) Sensor
Throttle Position (TPS) Sensor
Coolant Temperature (CTS) Sensor
Idle Air Control (IAC) Motor
5. Disconnect brake booster hose and positive crankcase ventilation (PCV)hose.
6. Disconnect generator electrical connections.
7. Disconnect air conditioning compressor electrical connections.
8. Disconnect left and right radio suppressor straps.
9. Disconnect and remove ignition coil towers (Refer to 8 - ELECTRICAL/IGNITION CONTROL/IGNITION COIL -
REMOVAL).
10. Remove top oil dipstick tube retaining bolt and ground strap.
11. Bleed fuel system (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY - STANDARD PROCEDURE).
12. Remove fuel rail (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL RAIL - REMOVAL).
13. Remove throttle body assembly and mounting bracket.
14. Drain cooling system below coolant temperature level (Refer to 7 - COOLING - STANDARD PROCEDURE).

INSTALLATION
1. Install intake manifold gaskets.
2. Position intake manifold.
3. Install intake manifold retaining bolts and tighten in
sequence shown in to 12 Nꞏm (105 in. lbs.).
4. Install left and right radio suppressor straps.
5. Install throttle body assembly.
6. Install throttle cable bracket.
7. Connect throttle cable and speed control cable to
throttle body.
8. Install fuel rail (Refer to 14 - FUEL SYSTEM/FUEL
DELIVERY/FUEL RAIL - INSTALLATION).
9. Install ignition coil towers (Refer to 8 - ELECTRI-
CAL/IGNITION CONTROL/IGNITION COIL -
INSTALLATION).
10. Position and install heater hoses and tubes onto intake manifold.
11. Install the heater hoses to the heater core and engine front cover.
12. Connect electrical connectors for the following components:
Manifold Absolute Pressure (MAP) Sensor
Intake Air Temperature (IAT) Sensor
Throttle Position (TPS) Sensor
Coolant Temperature (CTS) Sensor
Idle Air Control (IAC) Motor
Ignition coil towers
Fuel injectors
13. Install top oil dipstick tube retaining bolt and ground strap.
14. Connect generator electrical connections.
15. Connect Brake booster hose and Positive crankcase ventilation (PCV) hose.
16. Fill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
17. Install resonator assembly and air inlet hose.
18. Connect negative cable to battery.

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ENGINE - 5.7L - SERVICE INFORMATION
DESCRIPTION ............................. 2449
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - INTRODUCTION............. 2449
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - PERFORMANCE............. 2449
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - MECHANICAL............... 2451
DIAGNOSIS AND TESTING - CYLINDER
COMPRESSION PRESSURE............... 2451
DIAGNOSIS AND TESTING - CYLINDER
COMBUSTION PRESSURE LEAKAGE...... 2452
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - LUBRICATION............... 2453
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - MECHANICAL............... 2453
STANDARD PROCEDURE
STANDARD PROCEDURE - REPAIR
DAMAGED OR WORN THREADS.......... 2456
STANDARD PROCEDURE—HYDROSTATIC
LOCK.................................... 2456
REMOVAL ................................. 2457
INSTALLATION ............................. 2462
SPECIFICATIONS
5.7L ENGINE ............................. 2467
TORQUE ................................. 2472
SPECIAL TOOLS
5.7L ENGINE ............................. 2475
ELEMENT - AIR CLEANER
REMOVAL ................................. 2478
INSTALLATION ............................. 2479
CYLINDER HEAD
OPERATION—CYLINDER HEAD ............. 2481
DIAGNOSIS AND TESTING—CYLINDER HEAD
GASKET FAILURE........................ 2481
REMOVAL ................................. 2482
CLEANING ................................. 2484
INSPECTION ............................... 2484
INSTALLATION ............................. 2485
COVER - CYLINDER HEAD
REMOVAL ................................. 2490
INSTALLATION ............................. 2493
VALVES & SEATS - INTAKE/EXHAUST
DESCRIPTION
DESCRIPTION - VALVE GUIDES ........... 2496
DESCRIPTION ........................... 2496
STANDARD PROCEDURE - REFACING ....... 2496
REMOVAL ................................. 2497
INSTALLATION ............................. 2497ROCKER ARM
REMOVAL ................................. 2498
INSTALLATION ............................. 2500
SEALS - VALVE GUIDE
DESCRIPTION ............................. 2503
SPRINGS - VALVE
REMOVAL ................................. 2504
INSTALLATION ............................. 2510
ENGINE BLOCK
CLEANING ................................. 2515
INSPECTION............................... 2515
CAMSHAFT
REMOVAL
REMOVAL - CAMSHAFT CORE HOLE PLUG . 2516
REMOVAL - CAMSHAFT ................... 2516
INSPECTION............................... 2520
INSTALLATION
INSTALLATION - CAMSHAFT CORE HOLE
PLUG.................................... 2520
INSTALLATION - CAMSHAFT .............. 2521
CRANKSHAFT
REMOVAL ................................. 2527
INSTALLATION ............................. 2531
BEARINGS - CRANKSHAFT MAIN
STANDARD PROCEDURE - CRANKSHAFT
MAIN BEARING - FITTING ................. 2536
INSPECTION............................... 2536
SEAL - CRANKSHAFT OIL - FRONT
REMOVAL ................................. 2537
INSTALLATION ............................. 2538
SEAL - CRANKSHAFT OIL - REAR
DIAGNOSIS AND TESTING - REAR SEAL
AREA LEAKS . ............................ 2539
REMOVAL ................................. 2539
INSTALLATION ............................. 2540
RETAINER - CRANK REAR OIL - SEAL
REMOVAL ................................. 2541
INSTALLATION ............................. 2541
FLEX PLATE
REMOVAL ................................. 2542
INSTALLATION ............................. 2542
TAPPETS - HYDRAULIC ROLLER
DIAGNOSIS AND TESTING - HYDRAULIC
TAPPETS ................................ 2543
REMOVAL ................................. 2543
INSTALLATION ............................. 2544
PISTON & CONNECTING ROD
DESCRIPTION ............................. 2546
STANDARD PROCEDURE - PISTON FITTING . 2546
REMOVAL ................................. 2547
CLEANING ................................. 2548

INSPECTION ............................... 2548
INSTALLATION ............................. 2549
RINGS - PISTON
STANDARD PROCEDURE - PISTON RING
FITTING .................................. 2551
DAMPER - CRANKSHAFT
REMOVAL ................................. 2554
INSTALLATION ............................. 2554
COVER - STRUCTURAL
DESCRIPTION ............................. 2556
OPERATION ............................... 2556
REMOVAL ................................. 2556
INSTALLATION ............................. 2557
SOLENOID-MDS
DESCRIPTION ............................. 2559
OPERATION ............................... 2559
DIAGNOSIS AND TESTING .................. 2559
REMOVAL ................................. 2560
INSTALLATION ............................. 2560
MOUNT - FRONT
REMOVAL ................................. 2561
INSTALLATION ............................. 2563
MOUNT - REAR
REMOVAL ................................. 2565
INSTALLATION ............................. 2565
LUBRICATION
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - CHECKING
ENGINE OIL PRESSURE.................. 2566
DIAGNOSIS AND TESTING - ENGINE OIL
LEAK.................................... 2566
OIL
STANDARD PROCEDURE - ENGINE OIL
SERVICE ................................. 2568
FILTER - ENGINE OIL
REMOVAL ................................. 2569INSTALLATION ............................. 2569
PA N - E N G I N E O I L
REMOVAL ................................. 2570
INSTALLATION ............................. 2571
PUMP - ENGINE OIL
DESCRIPTION ............................. 2574
REMOVAL ................................. 2575
CLEANING ................................. 2575
INSPECTION............................... 2576
INSTALLATION ............................. 2577
MANIFOLD - INTAKE
DESCRIPTION ............................. 2578
DIAGNOSIS AND TESTING - INTAKE
MANIFOLD LEAKAGE ..................... 2578
REMOVAL ................................. 2578
CLEANING ................................. 2578
INSPECTION............................... 2579
INSTALLATION ............................. 2579
MANIFOLD - EXHAUST
DESCRIPTION ............................. 2580
OPERATION ............................... 2580
REMOVAL ................................. 2580
CLEANING ................................. 2581
INSPECTION............................... 2581
INSTALLATION ............................. 2581
COVER - TIMING
REMOVAL ................................. 2583
INSTALLATION ............................. 2585
TIMING CHAIN & SPROCKETS
REMOVAL ................................. 2587
INSTALLATION ............................. 2590
TENSIONER - TIMING CHAIN
DESCRIPTION ............................. 2593
OPERATION ............................... 2593

ENGINE - 5.7L - SERVICE INFORMATION
DESCRIPTION
The 5.7L engine (345 CID) eight-cylinder engine is a 90° V-Type lightweight, deep skirt cast iron block, aluminum
heads, single cam, overhead valve engine with hydraulic roller tappets. The heads incorporate splayed valves with
a hemispherical style combustion chamber and dual spark plugs. The cylinders are numbered from front to rear; 1,
3, 5, 7 on the left bank and 2, 4, 6, 8 on the right bank. The firing order is 1-8-4-3-6-5-7-2.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - INTRODUCTION
Engine diagnosis is helpful in determining the causes of malfunctions notdetected and remedied by routine main-
tenance.
These malfunctions may be classified as either performance (e.g., engineidles rough and stalls) or mechanical
(e.g., a strange noise).
(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) - PERFORMANCE and (Refer to 9 - ENGINE - DIAGNOSIS
AND TESTING)—MECHANICAL for possible causes and corrections of malfunctions. (Refer to 14 - FUEL SYSTEM/
FUEL DELIVERY - DIAGNOSIS AND TESTING) and (Refer to 14 - FUEL SYSTEM/FUEL INJECTION - DIAGNO-
SIS AND TESTING) for the fuel system diagnosis.
Additional tests and diagnostic procedures may be necessary for specificengine malfunctions that can not be iso-
lated with the Service Diagnosis charts. Information concerning additional tests and diagnosis is provided within the
following diagnosis:
Cylinder Compression Pressure Test (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
Cylinder Combustion Pressure LeakageTest (Refer to 9 - ENGINE - DIAGNOSISAND TESTING).
Engine Cylinder Head Gasket Failure Diagnosis (Refer to 9 - ENGINE/CYLINDER HEAD - DIAGNOSIS AND
TESTING).
Intake Manifold Leakage Diagnosis (Refer to 9 - ENGINE/MANIFOLDS/INTAKEMANIFOLD - DIAGNOSIS
AND TESTING).
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - PERFORMANCE
CONDITION POSSIBLE CAUSE CORRECTION
ENGINE WILL NOT START 1. Weak battery 1. Charge or replace as necessary.
2. Corroded or loose battery
connections.2. Clean and tighten battery
connections. Apply a coat of light
mineral grease to the terminals.
3. Faulty starter. 3. (Refer to 8 - ELECTRICAL/
STARTING - DIAGNOSIS AND
TESTING).
4. Faulty coil or control unit. 4. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/IGNITION
COIL - REMOVAL).
5. Incorrect spark plug gap. 5. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG
- CLEANING).
6. Dirt or water in fuel system. 6. Clean system and replace fuel
filter.
7. Faulty fuel pump, relay or wiring. 7. Repair or replace as necessary.

DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - MECHANICAL
CONDITION POSSIBLE CAUSES CORRECTIONS
NOISY VALVES 1. High or low oil level in
crankcase.1. (Refer to LUBRICATION &
MAINTENANCE -
SPECIFICATIONS)
2. Thin or diluted oil. 2. Change oil and filter.
3. Low oil pressure. 3. Check oil pump, if Ok, check rod
and main bearings for excessive
wear.
4. Dirt in lash adjusters. 4. Replace as necessary.
5. Worn rocker arms. 5. Replace as necessary.
6. Worn lash adjusters 6. Replace as necessary.
7. Worn valve guides. 7. (Refer to 9 - ENGINE/CYLINDER
HEAD/INTAKE/EXHAUST VALVES
& SEATS - STANDARD
PROCEDURE)
8. Excessive runout of valve seats
on valve faces.8. (Refer to 9 - ENGINE/CYLINDER
HEAD/INTAKE/EXHAUST VALVES
& SEATS - STANDARD
PROCEDURE)
CONNECTING ROD NOISE 1. Insufficient oil supply. 1. (Refer to LUBRICATION&
MAINTENANCE -
SPECIFICATIONS)
2. Low oil pressure. 2. Check oil pump, if Ok, check rod
and main bearings for excessive
wear.
3. Thin or diluted oil. 3. Change oil and filter.
4. Excessive bearing clearance. 4. Replace as necessary.
5. Connecting rod journal
out-of-round.5. Service or replace crankshaft.
6. Misaligned connecting rods. 6. Replace bent connecting rods.
MAIN BEARING NOISE 1. Insufficient oil supply. 1. (Refer to LUBRICATION &
MAINTENANCE -
SPECIFICATIONS)
2. Low oil pressure. 2. Check oil pump, if Ok, check rod
and main bearings for excessive
wear.
3. Thin or diluted oil. 3. Change oil and filter.
4. Excessive bearing clearance. 4. Replace as necessary.
5. Excessive end play. 5. Check thrust washers for wear.
6. Crankshaft journal out-of round. 6. Service or replace crankshaft.
7. Loose flywheel or torque
converter.7. Tighten to correct torque
DIAGNOSIS AND TESTING - CYLINDER COMPRESSION PRESSURE
The results of a cylinder compressionpressure test can be utilized to diagnose several engine malfunctions.

Ensurethebatteryiscompletelychargedandtheenginestartermotorisingood operating condition. Otherwise the
indicated compression pressures may not be valid for diagnosis purposes.
1. Clean the spark plug recesses with compressed air.
2. Remove the spark plugs.
3. Disable the fuel system (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY - DESCRIPTION).
4. Remove the ASD relay (Refer to 8 - ELECTRICAL/IGNITION CONTROL/AUTO SHUTDOWNRELAY-
REMOVAL).
5. Insert a compression pressure gauge and rotate the engine with the engine starter motor for three revolutions.
6. Record the compression pressure on the 3rd revolution. Continue the test for the remaining cylinders.
7. (Refer to 9 - ENGINE - SPECIFICATIONS) for the correct engine compression pressures.
DIAGNOSIS AND TESTING - CYLINDERCOMBUSTION PRESSURE LEAKAGE
The combustion pressure leakage test provides an accurate means for determining engine condition.
Combustion pressure leakage testing will detect:
Exhaust and intake valve leaks (improper seating).
Leaks between adjacent cylinders or into water jacket.
Any causes for combustion/compression pressure loss.
1. Check the coolant level and fill as required. DO NOT install the radiatorcap.
2. Start and operate the engine until it attains normal operating temperature, then turn the engine OFF.
3. Remove the spark plugs.
4. Remove the oil filler cap.
5. Remove the air cleaner hose.
6. Calibrate the tester according to the manufacturer’s instructions. The shop air source for testing should maintain
483 kPa (70 psi) minimum, 1,379 kPa (200 psi) maximum and 552 kPa (80 psi) recommended.
7. Perform the test procedures on each cylinder according to the tester manufacturer’s instructions. Set piston of
cylinder to be tested at TDC compression,While testing, listen for pressurized air escaping through the throttle
body, tailpipe and oil filler cap opening. Check for bubbles in the radiator coolant.
All gauge pressure indications should be equal, with no more than 25% leakage.
FOR EXAMPLE:At 552 kPa (80 psi) input pressure, a minimum of 414 kPa (60 psi) should be maintained in the
cylinder.
Refer to CYLINDER COMBUSTION PRESSURE LEAKAGE DIAGNOSIS CHART .
CYLINDER COMBUSTION PRESSURE LEAKAGE DIAGNOSIS CHART
CONDITION POSSIBLE CAUSE CORRECTION
AIR ESCAPES THROUGH
THROTTLE BODYIntake valve bent, burnt, or not
seated properlyInspect valve and valve seat.
Reface or replace, as necessary.
Inspect valve springs. Replace as
necessary.
AIR ESCAPES THROUGH
TAILPIPEExhaust valve bent, burnt, or not
seated properlyInspect valve and valve seat.
Reface or replace, as necessary.
Inspect valve springs. Replace as
necessary.
AIR ESCAPES THROUGH
RADIATORHead gasket leaking or cracked
cylinder head or blockRemove cylinder head and inspect.
Replace defective part
MORE THAN 50% LEAKAGE
FROM ADJACENT CYLINDERSHead gasket leaking or crack in
cylinder head or block between
adjacent cylindersRemove cylinder head and inspect.
Replace gasket, head, or block as
necessary

CONDITION POSSIBLE CAUSE CORRECTION
MORE THAN 25% LEAKAGE AND
AIR ESCAPES THROUGH OIL
FILLER CAP OPENING ONLYStuckorbrokenpistonrings;
cracked piston; worn rings and/or
cylinder wallInspect for broken rings or piston.
Measure ring gap and cylinder
diameter, taper and out-of-round.
Replace defective part as necessary
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - LUBRICATION
CONDITION POSSIBLE CAUSES CORRECTION
OIL LEAKS 1. Gaskets and O-Rings. 1. Replace as necessary.
(a) Misaligned or damaged. (a) Replace as necessary.
(b) Loose fasteners, broken or
porous metal parts.(b) Tighten fasteners, Repair or
replace metal parts.
2. Crankshaft rear seal 2. Replace as necessary.
3. Crankshaft seal flange.
Scratched, nicked or grooved.3. Polish or replace crankshaft.
4. Oil pan flange cracked. 4. Replace oil pan.
5.Front cover seal, damaged or
misaligned.5. Replace seal.
6. Scratched or damaged vibration
damper hub.6. Polish or replace damper.
7. Crankshaft Rear Flange
Microporosity7. Replace Crankshaft
OIL PRESSURE DROP 1. Low oil level. 1. Check and correct oil level.
2. Faulty oil pressure sending unit. 2. Replace sending unit.
3. Low oil pressure. 3. Check pump and bearing
clearance.
4. Clogged oil filter. 4. Replace oil filter.
5. Worn oil pump. 5. Replace as necessary.
6. Thin or diluted oil. 6. Change oil and filter.
7. Excessive bearing clearance. 7. Replace as necessary.
8. Oil pump relief valve stuck. 8. Replace oil pump.
9. Oil pickup tube loose or
damaged.9. Replace as necessary.
OIL PUMPING AT RINGS; SPARK
PLUGS FOULING1. Worn or damaged rings. 1. Hone cylinder bores and replace
rings.
2. Carbon in oil ring slots. 2. Replace rings.
3. Incorrect ring size installed. 3. Replace rings.
4. Worn valve guides. 4. Ream guides and replace valves.
5. Leaking intake gasket. 5. Replace intake gaskets.
6. Leaking valve guide seals. 6. Replace valve guide seals.
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - MECHANICAL
ENGINE MECHANICAL DIAGNOSIS CHART