Saturday, May 10, 2014
How do I Replace the Petcock on an 07 Jeep Liberty Radiator
A faulty drain cock or petcock on a 2007 Jeep Liberty could result in a radiator leak, an overheated engine and costly repairs. The petcock is a small valve located on the lower left side of the radiator. The petcock threads into the face of the radiator tank and replacing it is a fairly simple task that requires few tools. Make sure to drain the radiator before you remove the petcock to avoid spilling coolant.
Instructions
- 1
Open the hood of your Jeep and remove the radiator cap from the radiator. Set the cap aside then slide a jack under the front axle and raise the Jeep off the ground. Place a set of jack stands under the Jeep to support it.
2Slide a section of rubber tubing onto the drain cock and place a drain pan below it. Open the drain cock with a wrench and allow the coolant to drain from the system. Spin the drain cock out of the radiator with a wrench and thread the new on in place, tightening it with the wrench. Make sure the drain is closed.
3Raise the front of the Jeep off the jack stands then remove the stands from under the truck. Remove the drain pan from under the truck and lower the truck to the ground.
4Fill the radiator with coolant then place the cap on the radiator. Open the pressure bottle and fill it with coolant until it reaches the full line on the bottle. Start the engine and turn the heat selector to on. Allow the Jeep to run until it reaches normal operating temperature, about five to 10 minutes.
5Recheck the coolant level in the pressure bottle and add coolant until it reaches the full mark again. Continue checking and filling the bottle until the level no longer falls with the engine running.
6Recheck the coolant level after several days of normal driving. Add additional coolant as needed at that time.
