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Home >> Chevrolet >> 2007 >> Colorado 2WD L5-3.7L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Water Pump >> Service and Repair
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Water Pump: Service and Repair



Water Pump Replacement

Tool Required

J 46406 Fan Clutch Remover and Installer

Removal Procedure




1. Drain the cooling system.
2. Remove the fan.
3. Remove the drive belt.
4. Using the J 46406, secure the water pump pulley and remove the water pump pulley bolts.
5. Remove the J 46406.
6. Remove the water pump pulley.




7. Remove the water pump bolts.
8. Remove the water pump.
9. Discard the gasket.

Installation Procedure

1. Install a new water pump gasket.




2. Position the water pump to the engine.

Notice: Refer to Fastener Notice.

3. Install the water pump bolts.

Tighten the bolts to 10 N.m (89 lb in).




4. Install the water pump pulley.
5. Install the water pump pulley bolts.
6. Using the J 46406, secure the water pump pulley while tightening the water pump pulley bolts.

Tighten the bolts to 25 N.m (18 lb ft).

7. Remove the J 41240.
8. Install the drive belt.
9. Install the fan.
10. Fill the cooling system with the specified coolant and concentration.
11. Inspect for leaks.

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