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Old 09-01-2016, 12:05 PM   #1
karrlot's Avatar
Join Date: Jul 2015
Location: Manitou Springs, CO
Posts: 136
Year: 1991
Coachwork: Ward
Chassis: International
Engine: DT466
Rated Cap: 65 passenger
Removing the rear heater

When I remove (or temporarily disable) the rear heater, can I just cap the coolant lines so no coolant is flowing to the back of the bus?

Or do I need to hook them back together so the coolant can flow from the engine out one pipe and back into the engine through the other pipe?
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Old 09-01-2016, 12:46 PM   #2
Bus Crazy
somewhereinusa's Avatar
Join Date: Nov 2010
Location: Andrews,Indiana
Posts: 1,388
Year: 1991
Coachwork: Bluebird
Chassis: AARE
Engine: 3116 Cat 250hp
Rated Cap: Her, me and Molly
If you are removing all of the heaters you can block them off, if keeping front heat/defrost you need a loop.
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Old 09-01-2016, 08:18 PM   #3
Almost There
New2Skool's Avatar
Join Date: Feb 2016
Location: Bemidji MN
Posts: 98
Year: 1998
Coachwork: Carpenter Body
Chassis: International 3800
Engine: DT466
Rated Cap: 65 to Zero. Folding Chair
The heaters run on a loop.
If you remove the rear heater, just bypass it at the mid heater and close the loop.
As far as avoiding a mess, I parked at an angle and cut the lines preventing leakages or spills.
I helped a friend remove the rear heater and he just temp clamped the hoses and reattached to complete the loop at the mid ship heater.
D.L. Jones III
"The Independence"
98 International
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