Coolant boost pump

[nwarner2010]

I'm trying to find a replacement coolant boost pump for my bus, the unit in there right now appears to be a bergstorm 86304, I can't really find any info about it such as GPM or any direct replacements online. A new pump (different model) seems to be around $200+

Does anyone know of a cheaper alternative? Or where I could get a used one?

Thanks

[Robin97396]

I searched, and you're right they're expensive. $275 on the first one I found. They are out there. It looks like they're sold to the government frequently, thus the high price?


https://www.wbparts.com/rfq/2930-01-181-1940.html

[cadillackid]

there may even be a forum member who has removed one.. the only time you need it is if you have Lots of heaters /and or a Webasto.. and want the coolant to flow faster.. or if you want to run the heat for a few minutes after your bus is off.. potherwise many skoolies dont need them as they remove the rear heating systems from their busses.
-Christopher

[Robin97396]

That's a lot of money for a pump. Doesn't the Webasto come with a circulation pump?

[nwarner2010]

I've got a RE bus and trying to get the heater in the front to work. When I drove it from NY to AL in winter it was freezing! Checked the coolant boost pump today and it doesn't work, I'm guessing this probably didn't help with the little to no heat situation. My heaters were also clogged with dirt so cleaned those this weekend too. I don't have the Websto unit. Just not really wanting to spend that much on a pump. I was thinking more around the $50 mark.

[Robin97396]

Depending on where you live, having good heat in your bus can make a big difference. The water pump on the engine usually provides some heat. During the summers everyone wants to turn off the flow of hot water and sometimes there's valves hidden. Someone recently had three valves of varying types that turn off the heat. Sometimes it's hard to figure out how to get them all turned on.
My bus is only 26' and the rear heater scarcely put out warm air. I removed it, but kept it in case I'd like to install it somewhere else later, like the passenger area.

Those circulation pumps are probably so expensive because they last 20 years.

[Njsurf73]

Originally Posted by nwarner2010

I've got a RE bus and trying to get the heater in the front to work. When I drove it from NY to AL in winter it was freezing! Checked the coolant boost pump today and it doesn't work, I'm guessing this probably didn't help with the little to no heat situation. My heaters were also clogged with dirt so cleaned those this weekend too. I don't have the Websto unit. Just not really wanting to spend that much on a pump. I was thinking more around the $50 mark.

Just for information, where is the pump located? I have a re bluebird and a switch for the heater pump, but I haven't seen it yet lol.

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[nwarner2010]

Originally Posted by Njsurf73

Just for information, where is the pump located? I have a re bluebird and a switch for the heater pump, but I haven't seen it yet lol.

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Looking at the back of the bus, mine is on the left hand side, behind the air filter housing, just before the heater hoses go into the bus interior. looks about the size of a starter off a car. If you follow the coolant lines it shouldn't be too hard to find. My the switch for mine is to the left of the drivers seat with all the other switches.

[Njsurf73]

Originally Posted by nwarner2010

Looking at the back of the bus, mine is on the left hand side, behind the air filter housing, just before the heater hoses go into the bus interior. looks about the size of a starter off a car. If you follow the coolant lines it shouldn't be too hard to find. My the switch for mine is to the left of the drivers seat with all the other switches.

For some reason I wasn't thinking lol
I will follow the coolant lines.

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[Roadrunner]

I would try aaa bus in AZ. I'm sure they have a used one.

[cowlitzcoach]

I would try here:

• Heater Booster Pumps
• http://busparts.com/assets/pdf-files...r-fans-pdf.pdf
• Unity School Bus Parts - Search Results for "heater booster pump"
• https://www.directbus.com/category_s/60.htm

[nwarner2010]

Originally Posted by cowlitzcoach

I would try here:

• Heater Booster Pumps
• http://busparts.com/assets/pdf-files...r-fans-pdf.pdf
• Unity School Bus Parts - Search Results for "heater booster pump"
• https://www.directbus.com/category_s/60.htm

Thanks for the links. Looks like the place in the second link has the same pump as what I'm looking for under a different part number lk6606.

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[nwarner2010]

Originally Posted by Roadrunner

I would try aaa bus in AZ. I'm sure they have a used one.

Just sent them an email. Will see what they say. Didn't even know that place existed​. Might come in handy in the future

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[cadillackid]

definitely if you can find a bone yard.. these pumps usually last a long time... many drivers never turn them on...

I have also found them hooked up backwards plumbing-wise.. so make sure that yours is actually failed befiore getting a new one... on my carpenter bus they had the hoses reversed under the hood.. im sure at some point they replaced the heater hoses and never paid attention... every time i turned on the pump my heaters got cold, as it iwas pumping against the flow..
-Christopher

[nwarner2010]

It's definitely failed. I hoked it directly up to a 12V power source to test it, didn't get anything from it. I'll make sure to hook it up correctly when I get a replacement, I can see how that could easily be done.

[Robin97396]

Due to searching for the coolant pump yesterday, today I've been receiving adds for coolant pumps at about $60. They are obviously smaller than the originals.

[Njsurf73]

Originally Posted by Robin97396

Due to searching for the coolant pump yesterday, today I've been receiving adds for coolant pumps at about $60. They are obviously smaller than the originals.

If you aren't running it everyday for 9 months, would you really need the original? If it were used occasionally?


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[Robin97396]

I took out my rear heater because it was ineffective, probably for the same reason this coolant pump is made for. If I use my heater again it will be relocated forward in the passenger area behind the driver. I decided not to buy 50' of hose for a heater that was ineffective, and plugged up the holes. The rear of my bus is a garage anyway.

[Njsurf73]

Originally Posted by Robin97396

I took out my rear heater because it was ineffective, probably for the same reason this coolant pump is made for. If I use my heater again it will be relocated forward in the passenger area behind the driver. I decided not to buy 50' of hose for a heater that was ineffective, and plugged up the holes. The rear of my bus is a garage anyway.

Right now none of my heaters work. They are still connected, but they aren't grounded.

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[Marceps]

Is this the kind of part we're talking about?