Rocker Arms/Shafts

REMOVAL & INSTALLATION

2.5L Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Relieve the fuel system pressure.
3. Drain the engine oil.
4. Remove or disconnect the following:
   • Negative battery cable
   • Intake manifold
   • Accessory drive belt
   • Power steering pump
   • Intake Manifold Runner Control (IMRC) actuator
   • Spark plug wires
   • Ignition coil
   • Water pump drive belt and pulley
   • Camshaft seal housing
   • Wiring harness connector bracket
   • Valve covers
   • Oil pan
   • Front cover
   • Timing chains
   • Camshafts
   • Rocker arms

   NOTE: Keep all valvetrain components in order for assembly.

   To install:

5. Install or connect the following:
   • Rocker arms
   • Camshafts
   • Timing chains
   • Front cover
   • Oil pan
   • Valve covers
   • Wiring harness connector bracket
   • Camshaft seal housing
   • Water pump drive belt and pulley
   • Ignition coil
   • Spark plug wires
   • Intake Manifold Runner Control (IMRC) actuator
   • Power steering pump
   • Accessory drive belt
   • Intake manifold
   • Negative battery cable
6. Fill the crankcase to the correct level.
7. Start the engine and check for leaks.

3.0L Engine

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Air intake assembly
   • Distributor
   • Upper intake manifold
   • Valve covers

   NOTE: Keep all valvetrain components in order for assembly.

   • Rocker arm and shaft assembly. Loosen the bolts in sequence and in several passes.
   • Rocker arms and springs

     Fig. 1: Rocker arm shaft bolt removal sequence — 3.0L engine

   To install:

3. Install the rocker arms and springs in their original positions on the rocker arm shafts.
4. Install or connect the following:
   • Rocker arm and shaft assembly. Tighten the bolts in sequence and in several passes to 14–19 ft. lbs. (19–26 Nm).
   • Valve covers
   • Upper intake manifold
   • Distributor
   • Air intake assembly
   • Negative battery cable
5. Start the engine and check for leaks.

   Fig. 2: Rocker arm/shaft retaining bolt tightening sequence — 3.0L engine