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| Bleeding the coolant system http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=4879 |
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| Author: | Myke [ Thu Jan 12, 2006 3:34 pm ] |
| Post subject: | Bleeding the coolant system |
I have read on several sites that when bleeding the coolant system the car should remain on an incline (front end up). Is this required or does it help with the KJ? I have an 02 I had a tiny leak in my radiator and sealed that up, but now there is air in the system. Does anyone have tips for doing this? Here is my understanding of how to do it. (Engine must be cold) Loosen the air bleeder valve. Add Coolant until it starts to seep out around the threads of the plug. Once this happens tighten the plug and continue to add coolant until it reaches the max fill line. Or Leave off the radiator cap, start the KJ and let it idle while continuing to add coolant. Do this until it is at the max fill level and can maintain that much coolant. Then turn off the KJ and let it cool. Next replace the radiator cap. Does anyone see any problems with this? |
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| Author: | ManicMechanicJoe [ Thu Jan 12, 2006 5:06 pm ] |
| Post subject: | |
My KJ doesn't have a radiator cap... |
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| Author: | Myke [ Fri Jan 13, 2006 12:59 am ] |
| Post subject: | |
Over flow cap* or whatever you may want to call it. |
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| Author: | DaveKJ02 [ Fri Jan 13, 2006 2:38 am ] |
| Post subject: | |
(1) Tighten the radiator draincock and the cylinder block drain plug(s) (if removed). (2) Fill system using a 50/50 mixture of ethyleneglycol antifreeze and low mineral content water.Fill pressure bottle to service line.and install cap. NOTE: The engine cooling system will push any remaining air into the coolant bottle within about an hour of normal driving. As a result, a drop in coolant level in the pressure bottle may occur. If the engine cooling system overheats and pushes coolant into the overflow side of the coolant bottle, this coolant will be sucked back into the cooling system ONLY IF THE PRESSURE CAP IS LEFT ON THE BOTTLE. Removing the pressure cap breaks the vacuum path between the two bottle sections and the coolant will not return to cooling system. (3) With heater control unit in the HEAT position, operate engine with pressure bottle cap in place. (4) Add coolant to pressure bottle as necessary. Only add coolant to the pressure bottle when the engine is cold. Coolant level in a warm engine will be higher due to thermal expansion. NOTE: The coolant bottle has two chambers. Coolant will normally only be in the outboard (larger) of the two. The inboard chamber is only to recover coolant in the event of an overheat or after a recent service fill. The inboard chamber should normally be empty. If there is coolant in the overflow side of the coolant bottle (after several warm/cold cycles of the engine) and coolant level is above cold full when cold, disconnect the end of the overflow hose at the fill neck and lower it into a clean container. Allow coolant to drain into the container until emptied. Reconnect overflow hose to fill neck. |
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| Author: | sleeve84028 [ Fri Jan 13, 2006 7:30 am ] |
| Post subject: | |
Your Liberty doesn't have to be on an incline. Fill the reservoir bottle to the "max fill" and start the engine. Turn the heat on and add coolant as needed. Leave the motor running until the thermostat opens and verify the reservoir is still full. Since the reservoir is the highest part of the cooling system, all of the air should be pushed up and out of the bottle with the cap off. |
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