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Cat c15 coolant diverter valve

Cat c15 coolant diverter valve

Cat c15 coolant diverter valve installation

This is a discussion on Cat c15 coolant diverter valve installation within the General Mntenance, Troubleshooting &, Accidents forums, part of the General Mntenance category, Hey all,

After changing the water pump and having it re-plumbed to the tank, I am still experiencing...

Cat c15 coolant diverter valve installation

Hey all,

After changing the water pump and having it re-plumbed to the tank, I am still experiencing the same issue. My thermostat is set to 100 deg F and I was hoping this might fix it but it hasn't. It is also a very low volume water pump, so it is not as efficient as a higher volume pump.

I believe the issue is the coolant diverter valve. When I disconnected the coolant diverter valve, the engine overheated very quickly. As soon as the water in the coolant reached the valve, the temp spiked to over 250 degrees. I had a coolant temp guage at that point and it was over 270 degrees.

The coolant temp gauge on the water pump is also not very accurate so I can't tell how much hotter it was. I have been reading through the different posts on this issue and I have the same issues with them. The diverter valve is not closed when it should be. My guess is it is because of the low volume pump and the large capacity coolant pump, but I can't tell for sure.

Is there a way to install a second valve or a different type of diverter valve that will allow the engine to cool as normal?

I can provide pictures if needed but I can't do that with this computer.

Re: Cat c15 coolant diverter valve installation

I have the same issue with my cat c15. My diverter is working, but not correctly. I have a thermostat that is set to 100F.

I took the diverter valve out (because it was not working correctly) to see if there was any leakage. It was dripping a lot of fluid out of the top of the tank. I also noticed that the diverter valve spring was broken. I fixed the spring and reassembled the diverter, and everything has been running fine since.

I just had an issue with my diverter not closing, but it may have been because the system had been sitting for some time. I had changed the water pump and was bleeding the system off for about 20 min. When I replaced the pump, the diverter worked correctly. I think it just needed time to settle in.

I haven't had any problem with it. The only thing is, when it first started I thought I had a leak in the system. That was when I took the diverter out and noticed the amount of liquid leaking out. I replaced the diverter valve spring, and I think it might have been some residual coolant in the diverter.

Now I don't have to worry about it.

I do see a difference in the way the water comes out of the tank. It seems less. I think the diverter valve is still leaking a little bit, but that is OK.

Also, I have had the same problem, I believe it is because of the large water pump, and the small thermostat that runs off it.

Re: Cat c15 coolant diverter valve installation

I was told I have to bleed the system for 20 minutes to remove the system, and to replace the diverter valve. After replacing the diverter valve, the temp gauge was stable for over 40 min.

I am going to try replacing the diverter valve spring agn with a new one this time and see what happens. It may be some residual coolant.

I can definitely see a difference in the way the water comes out of the tank. It seems more forceful, or more liquid.

Re: Cat c15 coolant diverter valve installation

If you are running water pump #3 I have noticed that there will be a difference in the amount of water in the reservoir depending on how much the engine has been run and how long the engine has been run. It's not a big difference but I would have thought it would still fill up as much or more than when the engine has not been running.

I would think that the thermostat that you have in place will be limiting the amount of water flow to the engine. If it is a large water pump then there may be more than enough water flow for cooling the engine.

You may also want to look into a bigger thermostat and then see if that improves the way the engine runs. There is no sense in wasting your money on a large thermostat if you have a small water pump to work with.

I don't have a way of verifying the temperature of your engine to see if there is any more cooling avlable.

There will be a difference in the amount of water in the reservoir but I don't think it is too bad as long as you are using the correct gauge.

I don't really understand the way your system is running, so I have a few questions:

1. What gauge are you using?

2. Are you running the engine for 20 minutes or more before bleeding the system?

3. When the engine is not running, do you feel that the water level in the reservoir is low or high? If it is low, does it increase after running the engine?

Re: Cat c15 coolant diverter valve installation

I have a cat c15 and I'm using gauge #7. It is a low volume water pump.

I do bleed the system for about 20 minutes. The water level in the reservoir stays at about half the volume before the engine is started.

I do see a difference in the amount of water in the reservoir when the engine is running. There is no real change after running the engine for 20 minutes. The amount of water in the reservoir is about half when the engine is running. When the engine is not running, I do not see the water level


Watch the video: How To Remove and Install An IVA or VVA Solenoid. Cat C11, C13, and C15. (January 2022).