Installation

CAUTION: When servicing the coolant system, it is essential that coolant does not drip onto the accessory drive belt and/or pulleys. Protect the belt with clean, dry shop towels before servicing the cooling system. If coolant contact belt or pulleys, flush them with clean water.

Fig. 1 Water Pump - Early:

NOTE: If the water pump pulley is also being replaced (or reused), remove the pulley with the old water pump mounted to the engine and install the pulley with the replacement water pump mounted to the engine. Install the lower mounting bolt before installing the replacement pulley. The lower bolt cannot be installed with the pulley pressed onto the water pump shaft.

Fig. 2 Spark Plug Wire Retainer And Engine Front Damper Bracket - Early:

Fig. 3 Radiator Hoses And Coolant Temperature Sensor - Early:

Fig. 4 Cylinder Head And Y-tube Hoses:

Fig. 5 Heater Tube Locking Sleeve:

INSTALLATION
1. Tilt top of water pump back and start pump to cylinder head hoses over hose necks on cylinder heads. Line up heater hose and Y-tube connecting hose with nipples at rear of water pump.
2. Align heater tube and lock ring with elbow connector.
3. Push water pump down and back. Ensure that all hoses are correctly installed and not curled under.
4. The heater tube elbow connector has O-rings inside that seal the heater tube. The tube must be pushed into the elbow until it stops to ensure complete engagement of the tube and O-rings. With the tube completely installed into the elbow, push the lock ring up into the elbow as far as it will travel. The heater tube to elbow connection will leak if not properly connected.

Fig. 6 Water Pump Lower Mounting Bolt Removal/Installation:

5. Tighten water pump mounting bolts to 17.5 Nm 13 ft.lbs. torque.
6. Tighten all hose clamps.

CAUTION: When installing the accessory drive belt,the belt MUST be routed correctly. Incorrect belt routing can cause the water pump to rotate In the opposite direction resulting in engine overheating.

7. Install the accessory drive belt.

Fig. 4 Alternator Pivot Bolt, Lock Bolt And Adjusting Bolt 3.0L Engine:

Fig. 5 Engine Damper Mounting Bracket 3.0L Engine:

NOTE: Correct accessory drive belt tension is required to ensure optimum performance of the belt driven engine accessories. There are different gauges for checking serpentine and V type belts. use belt tension gauge, number 7198, or an equivalent gauge, when checking belt tension. Place gauge in the middle of the section of belt being used to check tension. For correct gauge measurement, the gauge must not contact any component other than the drive belt. With the gauge fully seated on the belt, release the gauge handle as rapidly as possible to ensure a correct tension reading.

Fig. 2 Engine Without A/C:

Fig. 3 3.0L Engine With A/C:

CAUTION: When installing the serpentine accessory drive belt, the belt must be routed correctly. It is possible to route the belt incorrectly and rotate the water pump in the opposite direction causing the engine to overheat. Refer to Engine/Drive Belts, Mounts, Brackets and Accessories/Drive Belt/Service and Repair section for procedures. Service and Repair


Proper belt tension for a new serpentine accessory drive belt is 800-900 Nm (180-200 lbs. ft.). For a used serpentine belt accessory drive belt, proper belt tension is 623-712 Nm (140-160 lbs.ft.).

8. Close radiator drain. Remove drain hose.
9. Fill and bleed cooling system. Refer to Cooling System Filling and Bleeding outlined in this section.