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Old 11-29-2021, 11:26 AM   #1
Mini-Skoolie
 
Join Date: Apr 2020
Location: Southern Indiana
Posts: 35
Year: 2001
Chassis: Blue Bird TC2000
Engine: Cummins 24V 5.9/ Allison 2500
What is this?

Hey all,

We seem to have developed a small coolant leak. It doesn’t leak any visible fluid while running, but we’ve noticed a small puddle forms about 4 hours after shutting the engine down.

The leak seems to be centered around a coupling you can see in these pictures. The coupling has a part on it that looks like a screw mechanism of some sort. Anyone know what it is or what function it serves?

Thanks for any input!
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Old 11-29-2021, 11:59 AM   #2
Bus Geek
 
Join Date: May 2009
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Year: 1991
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looks like an air bleeder placed at the Bottom of the system!!.. likely used as a drain valve because thats not where youd place a air bleeder.. perhaps they just needed a coupling.. if it were mine id replace the whole line with a continuous piece unless it is crazy long on each side..



the clamps likely just need a few clicks tighter. . those dont look like constant tension clamps ..
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Old 11-29-2021, 12:11 PM   #3
Mini-Skoolie
 
Join Date: Apr 2020
Location: Southern Indiana
Posts: 35
Year: 2001
Chassis: Blue Bird TC2000
Engine: Cummins 24V 5.9/ Allison 2500
Thanks for the input. I thought about just replacing that section with one piece of hose all together as well, just wasn't sure if the screw was necessary for something that I wasn't aware of.

For now though I think I'll see what a little tightening of the clamps does...
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Old 11-29-2021, 12:58 PM   #4
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Location: Long Beach, CA
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Year: 1998
Coachwork: Blue Bird
Chassis: TC1000, 40' MPV
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Quote:
Originally Posted by Ourversionoflife3 View Post
Thanks for the input. I thought about just replacing that section with one piece of hose all together as well, just wasn't sure if the screw was necessary for something that I wasn't aware of.

For now though I think I'll see what a little tightening of the clamps does...
I think a decent brass coupling and some good hose clamps would put that to rest but replacing that section seems like the right thing to do.
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Old 11-29-2021, 08:15 PM   #5
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As long as I was futzing with the clamps, I would go ahead and disconnect the joint and see if it's anything other than just a splice nipple.
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