How to Install a Water Pump in a Toyota Tundra

Toyota's heavy duty trucks need special attention when they begin to leak coolant or overheat. This guide focuses on installing a water pump on the most basic Toyota Tundra engine, the 2GR-FE. The other Toyota engines have more parts to remove, but you can still follow the same general directions.

Things You'll Need

• Screwdriver
• Large container
• Jack
• Jack stands
• Engine support device
• Adjustable wrench
• Water pump
• Gasket
• Water pump bolts
• Torque wrench
• O-ring
• Coolant

Instructions

Removing the Old Pump

1. Unscrew the negative battery cable with a screwdriver. Lift the car using an automotive jack, and then place it on jack stands and support the engine with a lift or similar device.

2. Position a large container under the drain hole to catch the discharged coolant. Open the cap on top of the radiator and unplug the drain plug underneath the radiator.

3. Use an adjustable wrench to remove the radiator and support to the frame seal on the left side. Then, remove the V-bank cover, fan shroud, air cleaner assembly, two oil cooler hoses, inlet hose, radiator hoses and five water bypass hoses.

4. Unbolt the five bolts retaining the water inlet pipe and o-ring inside the pipe. Remove the gasket from the water pump.

5. Check the engine support and then use the adjustable wrench to remove the two bolts on the number two idler pulley sub assembly and a/c compressor connector.

6. Undo four more bolts that will allow you to separate the compressor from the belt tensioner assembly. Remove them.

7. Record the configuration of the retaining bolts, marked A and B. Remove the water pump retaining bolts and the pump. Clean the mount and discard the pump, o-ring and gasket.

Installing the New Pump

1. Place the new water pump on the mount. You won't need sealant for the gasket on a Tundra. Hold the water pump and gasket in place as you secure it with the new bolts.

2. Put the new bolts into the water pump. The bolts are marked on the head with two numbers: A or B. Torque the A bolts to 80 inch pounds and the B bolts to 17 foot pounds of torque.

3. Install the belt tensioner assembly and the rest of the parts in the order you removed them. Use a new o-ring in the water inlet pipe.

4. Replace the drain plug on the bottom of the radiator. Remove the jack stands and engine support. Lower the Toyota Tundra to the ground.

5. Attach the negative battery cable to the post and tighten the screw on the clamp. Refill the radiator with the amount and type of coolant specified in your owner's manual.

6. Start the engine and check for leaks. Clean up any spilled coolant, which is toxic to people and animals.