Page 1 2
Go to... | Start A New Topic | Search | Notify | Tools | Reply To This Topic | |
| heater hose nightmare | Login now/Join our community |
 6/12Formally known as "Humbojb"  |
| ||||||||||||
|
 03/22 |
As the coolant thru these lines is only for cabin heat and preheating the domestic water heater tank, flow rates would not be important. A long length of copper pipe if exposed to ambient would be a really good heat sink and reduce the temperature as it flows to and from the front. The old rubber hose was a bit expanded from age, the new hose was same internal dimension and fit all the connections necessary including the bypass system I made. I made a tee fitting with a restricter that reduced the flow to the domestic water heater as I certainly agree with Steve that with 180 degree coolant thru the preheater, domestic water was way to hot after a long run. I didn't want to eliminate this feature as it is nice to have hot water on arrival. I was going to put a thermostat in line but was way more work than a simple restricter. IIRC it is about a 0.030 hole thru the restricter in the input line to the domestic heater. Ed 94 30' Breakaway #3864 30-BS-6B side entry New Cummins 5.9L, 375+ HP Allison 6 speed Spartan chassis K9DVC Tankless water heater | |||
|
Official Barth Junkie |
Drained the 8.3 and refilled with fresh 50/50 antifreeze. Around 7 gallons in the system and a half in the expansion tank. New coolant filter and we're good to go for now, sans engine coach heat. If I used copper I would use foam pipe insulation around it, at least on the supply line side. (like domestic water heater lines often do) Good hoses, backed up with bypass valves installed will likely be the plan.  9708-M0037-37MM-01 "98" Monarch 37 Spartan MM, 6 spd Allison Cummins 8.3 325+ hp | |||
|
3/23 |
I was thinking of the problem of "too hot" and thinking this isn't a new problem, there must be some solution. This from Watts may help, didn't read thoroughly, wife called to dinner. http://www.watts.com/pages/lea...ingValves.asp?catId= | |||
|
6/17 |
How can you tell if the hose is healthy? R.P.Muise 1994 Breakaway/Cummins 5.9/Allison transmission/Spartan Chassis | |||
|
| 03/22 |
Like any rubber or plastic part, age is an important consideration. Our coaches are 23 years old. Hoses can last a very long time if they are not exposed to UV, chaffing or chemicals. I replaced all of my hoses right after I got it. I did not see any real issues but there were some areas that had signs of chaffing. When I replaced the hoses, I made sure the ares of chaffing were addressed. I found issues with the radiator hoses that did require immediate attention. The lower steel crossover pipe was making contact with the stainless steel air pressure hose and was almost worn thru. Ed 94 30' Breakaway #3864 30-BS-6B side entry New Cummins 5.9L, 375+ HP Allison 6 speed Spartan chassis K9DVC Tankless water heater | |||
|
Just completed engine swap in my 85 Regal, out with the smog choked old 454, in with the 518 (tweaked 502). I am not positive I got all the heater core cooling lines back correctly. Is there a schematic anywhere showing what connects to what and direction of flow. I know it should be pretty obvious but every time I look at all those hoses I get a headache! Would appreciate any help. | ||||
|
| Official Barth Junkie |
I was not able to find a diagram for the heater hose layout on the 454. On mine the hose to the heater was attached to the intake manifold next to the thermostat.  The return line was attached to the radiator right side tank. (the tee is for the return line from my aux heater) Both lines run just in front of the orange wire, up to the heater core.  I finally did replace the heater lines in the Monarch. I was dreading having to snake the hoses along the frame rails above the cargo bays and I stalled the project for quite a while. As luck would have it, I have a full length heater air duct that runs under the floor of the coach. I was able to open up the front and rear of the duct and it was easy to pull the heater hoses through the floor duct. I connected them to the engine in the rear and the heater up front. I would have done it sooner if I knew the floor duct was easy to access.  Have Barth, will travel  9708-M0037-37MM-01 "98" Monarch 37 Spartan MM, 6 spd Allison Cummins 8.3 325+ hp | |||
|
| Powered by Social Strata | Page 1 2 |
 | Please Wait. Your request is being processed... |
|
This website is dedicated to the Barth Custom Coach, their owners and those who admire this American made, quality crafted, motor coach.
We are committed to the history, preservation and restoration of the Barth Custom Coach.
We are committed to the history, preservation and restoration of the Barth Custom Coach.
