CLEANING
Clean manifold in solvent and blow dry with compressed air.
Clean cylinder block gasket surfaces using a suitable solvent.
The plenum pan rail must be clean and dry (free of all foreign material).
INSPECTION
Inspect manifold for cracks.
Inspect mating surfaces of manifold for flatness with a straightedge.
INSTALLATION
1. Using a new gasket, install the intake manifold cover.
2. Install the cover-to-cylinder head bolts that do not hold down the fuel rail.Tightentheboltsto24Nꞏm(18ft.lbs.)
torque.
3. Install the high pressure rail and fuel lines (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL LINES -
INSTALLATION).
4. Using two (2) new gaskets, install the intake air grid heater and air inlet housing.
5. Connect the manifold air temperature/pressure sensor connector.
6. Install and tighten the air intake heater power supply nut to 14 Nꞏm (120 in. lbs.) torque.
7. Install oil dipstick tube support at fuel filter housing.
8. Install the engine oil dipstick tube and mounting bolt.
9. Position the charge air cooler outlet tube onto the air inlet housing. Tightentheclampsto11Nꞏm(100in.lbs.)
torque.
10. Attach the engine wire harness to the air inlet housing.
11. Prime the fuel system. Refer to the fuel priming procedure in Group 14, Fuel System.
12. Connect the battery negative cables.
INSPECTION ............................... 2789
ASSEMBLY . ............................... 2791
INSTALLATION ............................. 2792
SENSOR-OIL PRESSURE
REMOVAL ................................. 2793
INSTALLATION ............................. 2793
SENSOR-OIL TEMPERATURE
REMOVAL ................................. 2794
INSTALLATION ............................. 2794
BLOCK-ENGINE
DESCRIPTION ............................. 2795
STANDARD PROCEDURE - CYLINDER BORE
HONING ................................. 2795
CLEANING ................................. 2795
INSPECTION ............................... 2796
HYDRAULIC TAPPETS
DESCRIPTION ............................. 2797
REMOVAL ................................. 2797
INSTALLATION ............................. 2798
CAMSHAFT
REMOVAL ................................. 2799
INSTALLATION ............................. 2800
ROD-PISTON & CONNECTING
DESCRIPTION ............................. 2802
STANDARD PROCEDURE
PISTON FITTING ......................... 2802
MEASURING CONNECTING ROD SIDE
CLEARANCE............................. 2803
REMOVAL ................................. 2803
INSPECTION ............................... 2804
INSTALLATION ............................. 2805
RINGS-PISTON
STANDARD PROCEDURE - MEASURING
PISTON RING CLEARANCES .............. 2807REMOVAL ................................. 2807
INSTALLATION ............................. 2808
BEARINGS-CONNECTING ROD
DESCRIPTION ............................. 2810
STANDARD PROCEDURE
CONNECTING ROD BEARING - FITTING . . . 2810
MEASURING CONNECTING ROD BEARING
CLEARANCE............................. 2810
DAMPER-CRANKSHAFT
REMOVAL ................................. 2812
INSTALLATION ............................. 2813
SEAL-CRANKSHAFT OIL- FRONT
REMOVAL ................................. 2814
INSTALLATION ............................. 2814
SEAL-OIL-REAR-CRANK AND RETAINER
REMOVAL ................................. 2815
INSTALLATION ............................. 2815
BEARINGS-CRANKSHAFT MAIN
DESCRIPTION ............................. 2817
STANDARD PROCEDURE
MEASURING CRANKSHAFT MAIN BEARING
CLEARANCE IN-CAR...................... 2817
CRANKSHAFT
STANDARD PROCEDURE
MEASURING CRANKSHAFT END PLAY .... 2819
CRANKSHAFT JOURNAL MEASUREMENT . 2819
REMOVAL ................................. 2820
INSPECTION............................... 2822
INSTALLATION ............................. 2822
BEARING-CRANKSHAFT PILOT
REMOVAL ................................. 2825
INSTALLATION ............................. 2825
CONDITION POSSIBLE CAUSES CORRECTION
EXCESSIVE OIL
CONSUMPTION OR
SPARK PLUGS OIL
FOULED1. PCV system malfunction. 1. Check and repair PCV system as
necessary.
2. Defective valve stem seal(s). 2. Repair or replace seal(s).
3. Worn or broken piston rings. 3. Hone cylinder bores. Install new rings.
4. Scuffed pistons/cylinder walls. 4. Hone cylinder bores and replace pistons
as necessary.
5. Carbon in oil control ring groove. 5. Remove rings and de-carbon piston.
6. Worn valve guides. 6. Ream and install new valves with
oversize stems.
7. Piston rings fitted too tightly in
grooves.7. Remove piston rings. Check ring end
gap and side clearance. Replace as
necessary.
CYLINDER COMPRESSION PRESSURE TEST
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. Check engine oil level and add oil if necessary.
2. Drive the vehicle until engine reaches normal operating temperature. Select a route free from traffic and other
forms of congestion, observe all traffic laws, and accelerate through thegears several times briskly.
3. Remove the Auto Shut Down (ASD) relay from the Power Distribution Center(PDC).
4. Disconnect ignition cables from spark plugs.
5. Remove all spark plugs from engine. As spark plugs are being removed, check electrodes for abnormal firing
indicators fouled, hot, oily, etc. Record cylinder number of spark plug for future reference.
6. Be sure throttle blade is fully open during the compression check.
7. Insert compression gauge adaptor Special Tool 8116 or the equivalent, into the No. 1 spark plug hole in cylinder
head. Connect the 0-500 psi (Blue) pressure transducer (Special Tool CH7059) with cable adaptors to the scan
tool. For Special Tool identification, (Refer to 9 - ENGINE - SPECIAL TOOLS).
8. Crank engine until maximum pressure is reached on gauge. Record this pressure as No. 1 cylinder pressure.
9. Repeat the previous step for all remaining cylinders.
10. Compression should not be less than 689 kPa (100 psi) and not vary more than 25 percent from cylinder to
cylinder.
11. If one or more cylinders have abnormally low compression pressures, repeat the compression test.
12. If the same cylinder or cylinders repeat an abnormally low reading on the second compression test, it could
indicate the existence of a problem in the cylinder in question.The recommended compression pressures
are to be used only as a guide to diagnosing engine problems. An engine should not be disassembled
to determine the cause of low compression unless some malfunction is present.
CYLINDER COMBUSTIONPRESSURE LEAKAGE TEST
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.
WARNING: Do not remove the cooling system pressure cap with the system hot and under pressure
because serious burns from coolant can occur.
1. Check the coolant level and fill as required. DO NOT install the pressurecap.
2. Start and operate the engine until it attains normal operating temperature, then turn the engine OFF.
CHEMICAL TEST METHOD
Combustion leaks into the cooling system can also be checked by using Bloc-Chek Kit C-3685-A or equivalent.
Perform test following the procedures supplied with the tool kit.
HYDRAULIC TAPPET NOISE DIAGNOSIS
PRELIMINARY STEP TO CHECKING THE HYDRAULIC TAPPETS
Before disassembling any part of the engine to correct tappet noise, checkengine oil level and oil pressure.
1. Check the engine oil level.
Oil Level Check: stop engine after reaching normal operating temperature
The oil level should never be above the FULL mark on dipstick, or below the ADD mark. Either of
these two conditions could be responsible for noisy tappets. Allow 5 minutes to stabilize oil level,
check dipstick.
2. Remove oil pressure sensor.
3. Install a reliable oil pressure gauge at oil pressure sensor location.
The oil pressure should be 206.8 - 551.6 kPa (30 - 80 psi) at 2000 rpm.
OIL LEVEL TOO HIGH
If oil level is above the FULL mark on dipstick, it is possible for the connecting rods to dip into the oil while engine
is running and create foam. Foam in oil pan would be fed to the hydraulic tappets by the oil pump causing them to
become soft and allow valves to seat noisily.
OIL LEVEL TOO LOW
Low oil level may allow pump to take in air which when fed to the tappets, causes them to become soft and allows
valves to seat noisily. Any leaks on intake side of pump through which air canbedrawnwillcreatethesametappet
action. Check the lubrication system from the intake strainer to the pump cover, including the relief valve retainer
cap. When tappet noise is due to aeration, it may be intermittent or constant, and usually more than one tappet will
be noisy. When oil level and leaks have been corrected, engine should be operated at fast idle to allow all of the air
inside of the tappets to be bled out.
VALVE TRAIN NOISE DIAGNOSIS
To determine source of valve train noise, operate engine at idle with cylinder head covers removed and listen for
source of the noise.
NOTE: Worn valve guides or cocked springs are sometimes mistaken for noisytappets. If such is the case,
noise may be dampened by applying side thrust on the valve spring. If noise is not appreciably reduced, it
can be assumed the noise is in the tappet. Inspect the rocker arm push rod sockets and push rod ends for
wear.
Valve tappet noise ranges from light noise to a heavy click. A light noise isusually caused by excessive leak-down
around the unit plunger which will necessitate replacing the tappet, or bythe plunger partially sticking in the tappet
body cylinder. A heavy click is caused either by a tappet check valve not seating, or by foreign particles becoming
wedged between the plunger and the tappet body causing the plunger to stickin the down position. This heavy click
will be accompanied by excessive clearance between the valve stem and rocker arm as valve closes. In either case,
tappet assembly should be removed and replaced.
ENGINE OIL LEAK INSPECTION
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.
STANDARD PROCEDURE
ENGINE CORE AND OIL GALLERY PLUGS
Using a blunt tool such as a drift (4) and a hammer,
strike the bottom edge of the cup plug. With the cup
plug rotated, grasp firmly with pliers (2) or other suit-
able tool and remove plug (5).
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 cylinder
block or head. Be sure to remove old sealer. Lightly
coat inside of cup plug hole with Mopar
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.
FORM-IN-PLACE GASKETS AND SEALERS
There are numerous places where form-in-place gaskets are used on the engine. Care must be taken when apply-
ing form-in-place gaskets to assure obtaining the desired results.Do not use form-in-place gasket material
unless specified.Bead size, continuity, and location are of great importance. Too thin a bead can result in leakage
while too much can result in spill-overwhich can break off and obstruct fluid feed lines. A continuous bead of the
proper width is essential to obtain a leak-free gasket.
There are numerous types of form-in-place gasket materials that are used in the engine area. Mopar
Engine RTV
GEN II, Mopar
ATF-RTV, and MoparGasket Maker gasket materials, each have different properties and can not
be used in place of the other.
MOPAR
ENGINE RTV GEN II
Mopar
Engine RTV GEN II is used to seal components exposed to engine oil. This material is a specially designed
black silicone rubber RTV that retains adhesion and sealing properties when exposed to engine oil. Moisture in the
air causes the material to cure. This material is available in three ounce tubes and has a shelf life of one year. After
one year this material will not properly cure. Always inspect the package for the expiration date before use.
MOPAR
AT F R T V
Mopar
ATF RTV is a specifically designed black silicone rubber RTV that retains adhesion and sealing properties
to seal components exposed to automatic transmission fluid, engine coolants, and moisture. This material is avail-
able in three ounce tubes and has a shelf life of one year. After one year thismaterial will not properly cure. Always
inspect the package for the expiration date before use.
MOPAR
GASKET MAKER
Mopar
Gasket Maker is an anaerobic type gasket material. The material cures in the absence of air when
squeezed between two metallic surfaces. It will not cure if left in the uncovered tube. The anaerobic material is for
use between two machined surfaces. Do not use on flexible metal flanges.
MOPAR
BED PLATE SEALANT
Mopar
Bed Plate Sealant is a unique (green-in-color) anaerobic type gasket material that is specially made to seal
the area between the bedplate and cylinder block without disturbing the bearing clearance or alignment of these
components. The material cures slowly in the absence of air when torqued between two metallic surfaces, and will
rapidly cure when heat is applied.
MOPAR
GASKET SEALANT
Mopar
Gasket Sealant is a slow drying, permanently soft sealer. This material isrecommended for sealing
threaded fittings and gaskets against leakage of oil and coolant. Can be used on threaded and machined parts
under all temperatures. This material is used on engines with multi-layersteel (MLS) cylinder head gaskets. This
30. Connect oil cooler lines (4) and connect the oil
pressure sensor (1) and oil temperature sensor
(5).
31. Install the power steering line support bracket at
the radiator.
32. Install lower radiator hose.
33. Connect the cooling fan hydraulic lines (Refer to 7
- COOLING/ENGINE/RADIATOR FAN - INSTAL-
LATION).
34. Connect the A/C line to the fan shroud.
35. Install under body shield.
36. Lower vehicle.
37. Fill engine crankcase with the proper oil to the
correct level (Refer to LUBRICATION & MAINTE-
NANCE/FLUID TYPES - SPECIFICATIONS).
38. Evacuate and recharge the air conditioning (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMB-
ING - STANDARD PROCEDURE).
39. Fill the cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
40. Fill power steering to proper leveland purge the system (Refer to 19 - STEERING/PUMP - STANDARD PRO-
CEDURE).
41. Connect the negative battery cable.
42. Start the engine and run until operating temperature is obtained.
43. Turn engine off and inspect for leaks.
44. Recheck all fluid levels, fill as required.
SPECIFICATIONS
ENGINE
GENERAL SPECIFICATIONS
DESCRIPTION SPECIFICATION
Ty pe 9 0° V-1 0
Number of Cylinders 10
Firing Order 1-10-9-4-3-6-5-8-7-2
Compression Ratio 9.6:1
Brake Horsepower 501@5600 RPM
Torque 525 ft. lbs. @4100 RPM
Crankshaft Forged Steel
Cylinder Block Aluminum Alloy with Interference Fit Cast Iron Liners
Connecting Rods Cracked Cap Powdered Metal
Pistons Cast Aluminum Alloy
Metric Standard
Displacement 8.3L 505 cu. in.
Bore 102.4 mm 4.03 in.
Stroke 100.6 mm 3.96 in.
Compression Pressure 1069-1172 kPa 155-170 psi
Engine Weight (Approx.) 284 Kilograms 625 Lbs.
DESCRIPTIONSPECIFICATION
Metric Standard
Face Angle 45-45.5°
Back Cut Angle 25°-29°
Stem Diameter-Intake and Exhaust 7.90-7.92 mm 0.331-0.312 in.
Head Diameter-Intake 50.67-50.93 mm 1.995-2.005 in.
Head Diameter-Exhaust 40.01-40.26 mm 1.575-1.585 in.
Length-Intake (Over All) 145.69-146.33 mm 5.736-5.761 in.
Length-Exhaust (Over All) 146.23-146.86 mm 5.757-5.782 in.
Valve Margin-Intake 1.30 mm 0.051 in.
Valve Margin-Exhaust 2.03 mm 0.080 in.
Lift-Intake (Zero Lash 14.06 mm 0.554 in.
Lift-Exhaust (Zero Lash) 14.06 mm 0.554 in.
Valve Stem Tip Height 52.96 mm 2.085 in.
Stem-to-Guide Clearance-Intake
and Exhaust0.025-0.076 mm 0.001-0.003 in.
Max. Allowable-Intake (Rocking
Method)0.50 mm 0.020 in.
Max. Allowable-Exhaust (Rocking
Method)0.70 mm 0.027 in.
VALVE SPRING
DESCRIPTIONSPECIFICATION
Metric Standard
Free Length - Spring 55.0 mm 2.165 in.
Free Length - Spring Damper 47 mm 1.850 in.
Spring Tension (Valve Closed) 534 ± 20 N @ 44.5 mm 120 ± 4.5 lbs. @ 1.750 in.
Spring Tension (Valve Open) 1245 ± 40 N @ 30.6 mm 280 ± 9.0 lbs. @ 1.207 in.
Number of Coils - Spring 7.25 Right Hand Twist
Number of Coils - Spring Damper 3.6 to 4.0 Left Hand Twist
Wire Diameter (Ovate) 4.2 x 5.3 mm 0.166 x 0.208 in.
Installed Height (Spring Seat to
Bottom of Retainer)44.5 mm 1.750 in.
LUBRICATION
DESCRIPTIONSPECIFICATION
Metric Standard
At Curb Idle Speed* (Minimum with
engine at operating temperature)68.9 kPa 10 psi
At 3000 RPM 310-517 kPa 45-75 psi
CAUTION:
*If pressure is ZERO at curb idle, DO NOT run engine at 3000 rpm.
OIL PUMP
DESCRIPTION Nꞏm Ft. Lbs. In. Lbs.
Oil Filter18 - 160
Oil Pressure Sensor 8.5 - 75
Oil Temperature Sensor 8.5 - 75
Bolts-Power Steering Pump Mounting 23 - 200
Bolts-Rear Crankshaft Seal Retainer 11 - 95
Bolts-Rocker Arm 35 26 -
Spark Plugs27 20 -
Bolts-Starter Mounting 41 30 -
Bolts-Throttle Body 11 - 95
Bolts-Timing Chain Cover 23 - 200
Bolts-Water Pump Mounting 11 - 95