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Old 09-16-2022, 11:55 PM   #1
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Surge tank leaking,how far can I drive it?

As the title says our surge tank started leaking to day,We are 500 miles from home. ( Sounds like a song )I stopped and opened the cap to the first setting and drove it 100 miles to this camp ground,It did not loose any more coolant and it did not over heat.
Do you all think we can make it home like this?
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Old 09-17-2022, 12:45 AM   #2
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I would think you could make it however, if the crack is visible You could possibly seal it up with some JB Weld Water Weld.
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Old 09-17-2022, 07:30 AM   #3
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Is the tank cracked and leaking? Or is it spitting out the overflow hose?
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Old 09-17-2022, 08:02 AM   #4
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With the cap loose it shouldn't build pressure i would think you can make it 500 miles but that's your call.


When I first bought my rig back in 2008 there were a couple weeping cracks. I decided to try and patch, I took some duct tape and made a ~form allowing for ~1/2 gap along the crack which was horizontal. I then poured polyethylene glue into the void and let it set up. This made a very hard seal. It did not leak for ~5 years at which point I decided to replace the tank.

A previous posted suggest JB Weld which would probably do the same thing.



But either way I'd suggest stopping on frequent basis to check.
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Old 09-17-2022, 01:40 PM   #5
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You should be fine to make it home, loosening the cap is the best thing you can do. Just keep an eye on the temp gauge and low coolant light. [Moderator Edit]
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Old 09-17-2022, 03:19 PM   #6
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Originally Posted by C-Lowfab View Post
You should be fine to make it home, loosening the cap is the best thing you can do. Just keep an eye on the temp gauge and low coolant light. [Moderator Edit]
Nice!
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Old 09-17-2022, 11:50 PM   #7
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Quote:
Originally Posted by Cuda67bnl View Post
Is the tank cracked and leaking? Or is it spitting out the overflow hose?
=============================================
It is cracked at the right lower corner.
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Old 09-18-2022, 08:39 AM   #8
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How bad is it leaking as you drive when it is hot with the pressure cap loose?
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Old 09-18-2022, 10:01 AM   #9
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Originally Posted by jacwjames View Post
How bad is it leaking as you drive when it is hot with the pressure cap loose?
============================================
It does not leak now with he cap loose.
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Old 09-18-2022, 04:11 PM   #10
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Thinking out loud.

With the cooling system pressure cap released and If you keep the coach under the boiling point @ 212f and also keep an eye on the fluid level and the temp gage you should be fine I would think.


If that failed to work? I would remove the T- stat and try the same set-up again continue on.

( Fire suits on have at it boys...but it's only 500 miles and a possible temporary solution to get him home)


Happy Trails
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Old 09-19-2022, 10:55 PM   #11
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Thinking out loud.

With the cooling system pressure cap released and If you keep the coach under the boiling point @ 212f and also keep an eye on the fluid level and the temp gage you should be fine I would think.


If that failed to work? I would remove the T- stat and try the same set-up again continue on.

( Fire suits on have at it boys...but it's only 500 miles and a possible temporary solution to get him home)


Happy Trails
===============================================
Well we went another 150 miles and no problems.
I am a bit surprised the low coolant light has not come on.The leak is about 2 inches from the bottom so that is the level of the coolant.I guess the sensor must be below that?
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Old 09-20-2022, 08:04 AM   #12
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If your tank is like mine was it has a long probe that goes down from the top. There are small coolant lines at the top of the tank, one coming from the engine and the other going to the top of the radiator. There is also a large line at the bottom that sends coolant back to radiator. The small line coming from the top of the engine actually pushes quite a bit of coolant back to tank, it may be enough to keep the alarm from going off.



On mine the coolant is used to close a ground on the probe, when the coolant was low enough it would loose ground and the alarm would come on. In my case it uses a Kysor module to make the alarm work.
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Old 09-20-2022, 12:33 PM   #13
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Someone had a picture with all the measurement , but now I can not find it?
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Old 09-20-2022, 01:36 PM   #14
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Someone had a picture with all the measurement , but now I can not find it?
===========================================
I just spent two hours on the phone calling truck wrecking yards,with no help.
Does anyone have the web site or phone number of one that has the peterbilt 320 one?
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