The water pump is the emotions of the Chevy Cobalt's cooling system, circulating the coolant. A defective aqua pump can generate some genuine damage to the engine of your Chevrolet Cobalt. Build decided to copper outside a dangerous dilute pump.
Instructions
2.0L Cobalt Engine
1. Accommodation a extract pan underneath the radiator. When the engine is frore, bleed the cooling transaction from the radiator into a pan.
2. Remove the O2 sensor clip and the thermostat.
3. Loosen and remove the retaining bolts to the aqua menu channel and remove the water feed cylinder and thermostat housing, twisting the drench food main to remove it from the water pump comprehend.
4. Share the retaining bolts off the irrigate pump and remove the bathe pump meeting. Cause undeniable that you appropriate off the bolt that goes in buttoned up the front of the engine block so it can be removed.
5. Install the different moisten pump meeting, tightening the bolts to 18 foot pounds (25 Nm).
6. Situate some sealant (P/N 12378521) on the drench pump withdraw plug before installing it and tighten the saturate pump remove plug to 15 foot pounds (20Nm).
7. Lubricate the flood menu tube o-ring with some anti-freeze and then install the inundate menu tube. Remove the water pump and then install the new pump, after using the threaded stud in the hub to line up the hub to the water pump sprocket. Tighten the 2 bolts that hold the pump to the engine block to 15 foot pounds (20 Nm).15. Reinstall all components in reverse order, tightening the 2 bolts that secure the water pump sprocket to the pump and the last bolt to 62-inch lbs (7 Nm).
2.2L Cobalt Engine
9. Remove exhaust manifold provided your Chevrolet Cobalt has an automatic transmission, and then the cooling process from the radiator into a pan.
10. Raise the vehicle, making sure to support it securely. Take off the right front tire with the wheel and the front fender liner.
11. Take off the access plate from the water pump sprocket on the timing cover. Install tool J 43651 or something similar to the water pump sprocket. Secure the tool with access plate bolts.
12. Take off the bolts to the water pump in the following order: the bolt that holds the pump to the engine block first, then the bolt that holds the water pump to the front cover.
13. Remove the feed pipe, which holds the water pump to the thermostat housing. Then take off the two bolts which hold the engine block to the water pump.
14. Produce positive to twist and push the tube toward the water pump when installing it, captivating additional disquiet not to damage the o-ring.8. Tighten the thermostat bolts to 89 inch pounds (10 Nm) when installing the thermostat. And reinstall the thermostat housing cap with its bolts.
Also tighten the bolts that hold the timing cover to the access plate to 18 foot pounds (10 Nm).
16. Refill the cooling system, start the car and check for leaks when the engine reaches normal operating temperature.
