2WD 1. Disconnect negative battery cable. 2. Raise vehicle. 3. Remove engine mount through bolts. 4. Raise engine using engine support fixture special tool # 8534. 5. Remove engine mount to insulator bolts (1). 6. Remove insulator (2) from engine. 1. Disconnect the negative cable from the battery. 2. Raise the vehicle. 3. Remove the… Read More »
1. Verify that MDS bores are free of debris, before solenoid installation. 2. Install MDS solenoid{s) (3) fully into block. 3. Install hold down bolt (2) and tighten to 11 N·m (97 in. Ibs.). 4. Reconnect the MDS wiring harness to the solenoid(s) (3). 5. Install foam insulator pad (1) if removed. 6. Install the… Read More »
1. Disconnect the negative battery cable. 2. Remove the intake manifold (Refer to 9 – ENGINE/MANIFOLDS/INTAKE MANIFOLD – REMOVAL). 3. Remove foam insulator pad (1) if necessary. 4. Remove wiring harness connectors from the MDS solenoid(s} (3) that require removal. 5. Remove hold down bolt (2) from MDS solenoid(s} (3). 6. Remove MDS solenoid(s} (3).… Read More »
MDS SOLENOID The Multi Displacement System has the following detectable issues: • Solenoid circuit • Fail to deactivate a cylinder(s) • Fail to reactivate a cylinder(s) • Low oil pressure
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… Read More »
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 acceleration 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… Read More »
AUTOMATIC TRANSMISSION CAUTION: The structural cover must be installed as described in the following steps. Failure to do so will cause severe damage to the cover. 1. Position the structural cover in the vehicle. 2. Install all four bolts retaining the cover-to-engine. DO NOT tighten the bolts at this time. 3. Install the four cover-to-transmission… Read More »
CAUTION: On manual transmission vehicles t the 7/16 inch engine block to clutch housing bolts must be loosened before removal of the structural dust cover (1). Clutch housing distortion will occur if this procedure is not followed. 1. If equipped With a manual transmission, loosen the 7/16 inch engine block to clutch housing bolts. 2.… Read More »
CAUTION: To prevent severe damage to the Crankshaft, Damper or Damper Installer 8S12-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… Read More »
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… Read More »