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11-29-2017, 10:37 AM
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#1
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Almost There
Join Date: Sep 2017
Posts: 91
Year: 1989
Coachwork: Chevy
Chassis: C60
Engine: 8.2 diesel "Fuel Pincher"
Rated Cap: GVWR 27000
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Help me with my unidentified coolant parts?
This is the post about another unidentified object I found underneath my skoolie. Any help is appreciated, near the front, next to the fuel tank. It’s metal and feels like it cracked/broken at one end.
Thanks for any help you can offer.
1989 GMC Thomas 60 military bus.
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11-29-2017, 10:48 AM
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#2
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Mini-Skoolie
Join Date: Sep 2017
Posts: 35
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Does the engine oil, coolant or exhaust go thru it? Looks like something used to heat or cool another liquid.
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11-29-2017, 10:55 AM
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#3
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Almost There
Join Date: Sep 2017
Posts: 91
Year: 1989
Coachwork: Chevy
Chassis: C60
Engine: 8.2 diesel "Fuel Pincher"
Rated Cap: GVWR 27000
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I was thinking the same thing. I thought somebody with a little more experience might Be able to identify this. Maybe it’s standard?
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11-29-2017, 11:13 AM
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#4
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Almost There
Join Date: Sep 2017
Posts: 91
Year: 1989
Coachwork: Chevy
Chassis: C60
Engine: 8.2 diesel "Fuel Pincher"
Rated Cap: GVWR 27000
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I’m gonna go take some more pictures. I have a feeling this is connected to my other on identified listing, hmmm.
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11-29-2017, 02:52 PM
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#5
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Almost There
Join Date: Sep 2017
Posts: 91
Year: 1989
Coachwork: Chevy
Chassis: C60
Engine: 8.2 diesel "Fuel Pincher"
Rated Cap: GVWR 27000
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More ics
Well, I decided to keep looking at this item until I had some insight. I found out that those wires running to each and run to a 110 V outlet on the outside of the bus.
From the same box that came from there is another electric line running to the front of the bus. I haven’t followed up with that when yet.
I believe you are right that this is a heating unit or some type of valve. The 110 V jumps from the front to the back.
Another interesting thing is if I squeeze the anti-freeze hose I hear something that sounds like a valve flipping around.
The anti-freeze from this unit runs into a cylinder that looks like it heats up the diesel fuel. It says not to run it in the summertime, but to have a valve on it? It’s the last picture.
Anybody else has any idea what this might be for sure, I hope they will chime in.
-Lewis
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11-29-2017, 03:04 PM
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#6
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Bus Crazy
Join Date: Jun 2013
Location: Picton,Ont, Can.
Posts: 1,956
Year: 1997
Coachwork: Bluebird
Chassis: GMC
Engine: Cat 3116
Rated Cap: 72
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Is that some type of heat exchanger to keep the fuel from gelling in really cold weather? Might be if a military built bus. Definitely worth more inspection and if good I would leave it.
I talked to a trucker once who wanted diesel for a fillup but it was so cold the fuel wouldn't pump. With windchill it was said to be -68f in northern Quebec. My very last trip into that country forever.
Your pics don't give much clue so just follow the lines I guess. Someone here has seen that setup before likely.
My 2 cents,
John
__________________
Question everything!
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11-29-2017, 03:06 PM
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#7
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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Cowlitzcoach isn't on as much anymore, but he'd know what it is.
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11-29-2017, 03:18 PM
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#8
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Bus Geek
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 6,409
Coachwork: 97 Bluebird TC1000 5.9
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That pretty much sounds like a block heater. It dose look like a heat exchanger of some type.
If your hoses are quite soft you should probably look at replacing them before you attempt any deserts.
You know the old saying, "If it ain't broke, don't fix it." Plug that baby in for a minute or so to see if it heats up, or sparks fly or whatever. I'd bet it still works.
__________________
Robin
Nobody's Business
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11-29-2017, 03:43 PM
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#9
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Almost There
Join Date: Sep 2017
Posts: 91
Year: 1989
Coachwork: Chevy
Chassis: C60
Engine: 8.2 diesel "Fuel Pincher"
Rated Cap: GVWR 27000
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Hello Robin,
I think it for heating. There is another 120v headed to the front. I’ll look at it tomorrow, but likely for the block. I was able to squeeze the hoses so easily, since they are made of silicone?! They are braided and all, just easy to squeeze.
I may need to do the plug and see method.
Thanks for your input!
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11-29-2017, 03:46 PM
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#10
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Almost There
Join Date: Sep 2017
Posts: 91
Year: 1989
Coachwork: Chevy
Chassis: C60
Engine: 8.2 diesel "Fuel Pincher"
Rated Cap: GVWR 27000
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The picture that looks like A can, yes that’s what that is. It’s the black thing that has 120 V running to it. I’m guessing it’s a heater of some kind as well. We’re planning on moving to Kansas, further weather doesn’t get too extreme.
Unit has a crack at one end as well. Thinking of cutting it off and just joining the two ends for circulation. Just leave everything else in place.
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11-29-2017, 04:03 PM
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#11
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Bus Geek
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 6,409
Coachwork: 97 Bluebird TC1000 5.9
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There's been mention of pumps in the coolant lines on the long buses to better provide heat to the rear heaters. I don't know what they look like though. Is that unit on the line that goes to the rear heaters?
__________________
Robin
Nobody's Business
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11-30-2017, 07:21 PM
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#12
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Bus Nut
Join Date: Feb 2016
Location: in the bus on the road
Posts: 529
Year: 1998
Coachwork: myself
Chassis: amtran
Engine: international dt466e allison md 3060
Rated Cap: 13 ton or so says the tit
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Quote:
Originally Posted by meyermobile
This is the post about another unidentified object I found underneath my skoolie. Any help is appreciated, near the front, next to the fuel tank. It’s metal and feels like it cracked/broken at one end.
Thanks for any help you can offer.
1989 GMC Thomas 60 military bus.
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It's a secondary pump. Sometimes called a heater booster. Water lines go to the heaters ( heart exchangers) in the bus. This is a secondary pump to get warmer water inside the bus.
Sent from my LG-LS777 using Tapatalk
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11-30-2017, 07:39 PM
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#13
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Bus Geek
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 6,409
Coachwork: 97 Bluebird TC1000 5.9
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If you're removing your rear heater, like most of us, you won't need that pump anymore.
__________________
Robin
Nobody's Business
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11-30-2017, 08:03 PM
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#14
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Traveling
Join Date: Nov 2015
Location: Midwest
Posts: 2,573
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
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Quote:
Originally Posted by Robin97396
If you're removing your rear heater, like most of us, you won't need that pump anymore.
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I'd leave it. It'd make a cool fountain--- or just plumb it right into the bath tub for mobile Jacuzzi.
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11-30-2017, 08:05 PM
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#15
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Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 18,753
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
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that little pump saved me a TOW BILL! a couple months ago... blew an idler pulley bearing.. water pump belt gone.. heater pump on, heater fans on.. start the bus ran it up to 40 MPH, killed the engine.. coasted.. that little pump keeping coolant in my engine flowing.. heaters taking off the heat... made it to a service center without a tow... and engine temp never over 207
-Christopher
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11-30-2017, 08:06 PM
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#16
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Bus Nut
Join Date: Feb 2016
Location: in the bus on the road
Posts: 529
Year: 1998
Coachwork: myself
Chassis: amtran
Engine: international dt466e allison md 3060
Rated Cap: 13 ton or so says the tit
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Quote:
Originally Posted by cadillackid
that little pump saved me a TOW BILL! a couple months ago... blew an idler pulley bearing.. water pump belt gone.. heater pump on, heater fans on.. start the bus ran it up to 40 MPH, killed the engine.. coasted.. that little pump keeping coolant in my engine flowing.. heaters taking off the heat... made it to a service center without a tow... and engine temp never over 207
-Christopher
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That's smart thinking
Sent from my LG-LS777 using Tapatalk
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11-30-2017, 09:25 PM
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#17
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Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 18,753
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
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Quote:
Originally Posted by Dead pirate
That's smart thinking
Sent from my LG-LS777 using Tapatalk
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you know how it is if you break down on the road.. you try and think of EVERY WAY to avoid that big-boy-tow-hook... LOL
-Christopher
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