Disassembly Procedure

1. Disconnect negative battery cable.

2. Disconnect intake air temperature (IAT) sensor harness connector.

3. Remove air intake duct and air cleaner assembly.

4. Drain coolant from engine as follows:

A. Remove pressure cap from radiator surge tank when engine is cool by:

(1) Slowly rotating cap counterclockwise to detent (do not press down while rotating).

(2) Wait until any residual pressure (indicated by a hissing sound) is relieved.

(3) After all hissing stops, press down on cap while continuing to rotate counterclockwise.

B. Open radiator drain valve located at bottom of right-hand radiator end tank.





C. Open air bleed valves on thermostat housing and throttle body unit (refer to Figure 1).


D. Remove engine knock sensors from lower right-hand and lefthand sides of block.

NOTICE:
A large amount of coolant is still left in system after radiator petcock has been opened and coolant has been allowed to drain out. This fluid will drain out of the engine block when the knock sensors are removed during coolant drain, flush and refill procedures. Take proper precautions to avoid contact with excessive amounts of coolant during coolant drain, flush and refill procedures

E. Allow system to drain completely.

5. Disconnect upper and lower radiator hoses and heater hoses from coolant pump.

6. Relieve serpentine belt tension using long 5/8 inch box wrench to rotate tensioner. Belt need only be removed from alternator pulley.

7. Disconnect ECM coolant sensor connector and harness retainer on front of pump.

8. Remove drive belt tensioner bolt and tensioner.

9. Remove coolant pump by removing six bolts securing coolant pump to engine block.





10. Remove three crankshaft torsional damper bolts and damper (refer to Figure 2).

11. Disconnect spark plug (secondary) cables from distributor. Twist each boot 1/2 turn before removing, and pull only on boot to remove wire from distributor.

12. Disconnect four-terminal connector from distributor.





13. Remove three distributor mounting bolts. Pull distributor forward until drive shaft disengages from engine. Mark top surface of shaft to denote location during re-assembly (refer to Figure 3).