Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1592
DAMPER-CRANKSHAFT
REMOVAL
1. Disconnect negative cable from battery.
2. Remove accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
3. Drain cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
4. Remove radiator upper hose.
5. Remove fan shroud (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - REMOVAL).
6. Remove crankshaft damper bolt.
7. Remove damper using Special Tools 8513A Insert
and 1023 Three Jaw Puller.
INSTALLATION
CAUTION: To prevent severe damage to the Crank-
shaft, Damper or Special Tool 8512–A, thoroughly
clean the damper bore and the crankshaft nose
before installing Damper.
1. Slide damper onto crankshaft slightly.
CAUTION: Special Tool 8512–A, is assembled in a
specific sequence. Failure to assemble this tool in
this sequence can result in tool failure and severe
damage to either the tool or the crankshaft.
2. Assemble Special Tool 8512–A as follows, The nut
is threaded onto the shaft first (2). Then the roller
bearing (1) is placed onto the threaded rod (3) The
hardened bearing surface of the bearing (1) MUST
face the nut (2). Then the hardened washer (5)
slides onto the threaded rod (3). Once assembled coat the threaded rod’s threads with Mopar
T
Nickel Anti-Seize
or (Loctite No. 771).
3. Using Special Tool 8512–A, press damper onto crankshaft.
4. Install then tighten crankshaft damper bolt to 176 N·m (129 ft. lbs.).
5. Install radiator upper hose.
9 - 2392
ENGINE - 5.7L SERVICE INFORMATION
LX
6. Install accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION).
7. Refill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
8. Connect negative cable to battery.
LX
ENGINE - 5.7L SERVICE INFORMATION
9 - 2393
COVER-STRUCTURAL
DESCRIPTION
The structural dust cover is made of die cast aluminum and joins the lower half of the transmission bell housing to
the engine. The LX uses an integral one piece aluminum oil pan/structural cover.
OPERATION
The structural cover provides additional powertrain stiffness and reduces noise and vibration. The LX uses an inte-
gral structural cover/oil pan.
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ENGINE - 5.7L SERVICE INFORMATION
LX
SOLENOID-MDS
DESCRIPTION
The Multi Displacement System selectively deactivates cylinders 1,4,6, and 7, to improve fuel economy. It has two
modes of operation :
•
8 cylinders for acceleraton and heavy loads.
•
4 cylinders for cruising and city traffic.
The main components of the Multi Displacement System are :
•
Unique MDS camshaft.
•
Deactivating roller tappets.
•
4 control valves/solenoids.
•
control valve/solenoid wiring harness.
•
oil temp sensor.
OPERATION
Cylinder Deactivation
•
Trap an exhaust charge from a normal combustion event
•
Normal combustion event
•
Don’t open the exhaust valve
•
Don’t open the intake valve
•
Piston is an air spring
•
Cylinders deactivated in firing sequence
Cylinder Reactivation
•
Open the exhaust valve
•
Empty the cylinder
•
Open the intake valve
•
Normal combustion event
•
Cylinders reactivated in firing sequence
DIAGNOSIS AND TESTING
The Multi Displacement System has the following detectible issues:
•
Solenoid circuit
•
Fail to deactivate a cylinder(s)
•
Fail to reactivate a cylinder(s)
•
Low oil pressure
CONDITION
POSSIBLE CAUSES
CORRECTION
MDS does not activate
1. Low oil pressure
1. Check for proper oil pressure
2. Bad oil temp sensor
2. Replace oil temp sensor
3. Malfunctioning MDS Solenoid
3. Replace Solenoid
4. Malfunctioning MDS Tappet
4. Replace Tappet
MDS Does Not Deactivate
1. Low oil pressure
1. Check for proper oil pressure
2. Bad oil temp sensor
2. Replace oil temp sensor
3. Malfunctioning MDS Solenoid
3. Replace Solenoid
4. Malfunctioning MDS Tappet
4. Replace Tappet
LX
ENGINE - 5.7L SERVICE INFORMATION
9 - 2395
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