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Old 01-27-2019, 08:22 PM   #1
Mini-Skoolie
 
Join Date: Apr 2018
Posts: 11
Need some help please

We are new and slowly trying to figure things out. We have a 1991 international 3700 and itís been sitting for 6 months... with small around the block trips, while we finished our conversion. Yesterday we took it farther and it overheated. We discovered that the coolant reservoir tank was missing some sort of threaded plug? Not exactly sure what itís called or how to find a replacement. We are somewhat stranded and not sure where to start. We limped the bus along to a nearby rv park and theyíve been kind enough to let us park here but donít want it to be more than a couple days. Iíve taken pictures to the local auto part stores and they all looked at me like I was crazy. Can I get some advice from yíall? What is this part called? Where do I go and find it? Are there places online to find this part? The guys at the store said itíd be really hard to find the right size and thread size, etc.
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Old 01-27-2019, 08:50 PM   #2
Bus Geek
 
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Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 8,522
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
Looks like it might be a 3/4" pan pug.
https://www.ebay.com/itm/New-SMART-O...qEe5:rk:3:pf:0
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Old 01-27-2019, 09:02 PM   #3
Mini-Skoolie
 
Join Date: Dec 2017
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If you aren't able to find the plug, and have to move the bus, I used a 3 liter soda bottle for a while as my coolant overflow tank in my first bus, and it seemed to work fine.
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Old 01-27-2019, 09:25 PM   #4
Bus Crazy
 
Join Date: May 2016
Location: Georgia
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Year: 2001
Coachwork: Blue Bird
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Engine: T444E
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As memory serves me on the older models, they had a sight glass on the reservoir. Probably made of plastic.


Might be something similar to this: https://www.ebay.com/i/282751058858?chn=ps
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Old 01-27-2019, 09:27 PM   #5
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 12,228
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
thats normally where the Site glass screws into the tank.


https://www.ebay.com/itm/Internation...-/273088074103


-Christopher
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Old 01-27-2019, 09:34 PM   #6
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
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Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by DeanyOscar View Post
If you aren't able to find the plug, and have to move the bus, I used a 3 liter soda bottle for a while as my coolant overflow tank in my first bus, and it seemed to work fine.

the overflow tank on these are pressurized.. not like on a gasoline motor.. ive done the soda bottle thing on old gas cars before.. but with that plug out, the syste, is running non-pressuerized and the coolant level is low because it needs to be abpove that size glass which is missing so it runs out..
-Christopher
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Old 01-27-2019, 09:40 PM   #7
Mini-Skoolie
 
Join Date: Dec 2017
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Oh good to know!! My first bus was a gas, I didn't realize coolant overflow was pressurized on diesel. Thanks Christopher!
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