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Old 07-02-2016, 05:51 PM   #1
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 7,950
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
IHC DT refilling the coolant??

I tore my bus apart to install the new defroster, Dash A/C and heat.. and electronic heater vslves under the hood...

in an attempt to curb the amount of coolant that would land inside the bus when i pulled the nasty bergstrom box out I use the heater booster pump and pump out the coolant into a bucket until it wouldbt pump any more..

I got a 5 gallon bucket FULL of nice bright green coolant...

inside when I pulled the heater apart, I soaked up probablt another 1/2 gallon as I pulled the heater lines apart...

im installing 2 brand new heaters and reconnecting my rear heater and then i have 2 new electrically actuated heater vales under the hood so I can turn on and off my heating with a switch at will..


what is the best procedure for re-filling my cooling system and working the air out? I figured id first open up al;l the heating valves and then turn on the booster pump and then start pouring coolant into the bottle at the top of the radiator... then im thinking I start the engine and keep pouring it in till i cant anymore and then put the cap on and run it till it starts to warm up??

I want to make sure I dont end up with air bubbles caught in the system.. I know if there are air bubbles the temperature gauge will lie to me..

are there certasin procedures for refilling a DT360/466 other than what i described?

I have 6 bottles of new SCA pre-mixed pre-treated coolant so i dont have to add the additives..

-Christopher
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Old 07-03-2016, 10:46 AM   #2
Skoolie
 
Join Date: Mar 2011
Location: Port angeles, Wa
Posts: 186
Year: 90
Coachwork: bluebird conventional
Chassis: international
Engine: dt466
Rated Cap: 72
There is no real procedure for refilling. Fill the tank with antifreeze and water, open all heater valves , (not drains), run engine and top off as you go. Run the engine at a high idle ever once in a while to burp the system.
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Old 07-03-2016, 11:31 AM   #3
Bus Nut
 
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Join Date: Oct 2015
Location: Spring Valley AZ
Posts: 784
Year: 2000
Coachwork: Bluebird
Engine: 5.9 Cummins
Rated Cap: 2 elderly children, 1 cat
For my Blue Bird, maybe similar.



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