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Circulation pumps

Yahoo Message Number: 80217
I've read posts about pulling the fuse that controls the over-the-road water heat circulators but have these issue with my 2000 Magna

1. Can't find the pump in the rear
2. Can't find the fuse, even tried to tone it out at the front pump.

I suppose I could short it to ground and look for the one that's bad but that's a bad way to do it. Any help would be appreciated.

Thanks,

Jon Baum

Magna 2K 5923

Re: Circulation pumps

Reply #1 –
Yahoo Message Number: 80264
The pump on our coach is mounted forward of the interior engine hatch and only accessible from inside the bedroom.
The fuse for the coolant pump above the engine on our 2000 Affinity was located in the steering bay on the Front Run Board. It was metal encased fuse about 3/4" high by 3/4" wide and 1/4" thick. The pump was VERY expensive. You might want to check prices and optional parts.

Don Gilbert

2000 42' Affinity B&B #5681

Re: Circulation pumps

Reply #3 –
Yahoo Message Number: 80289
On my old rig, the rear pump was attached to a coolant line and mounted just back of the engine on the driver side. I accessed it from below on the first two failures. Four years ago I removed the pump.

The forward pump is just behind the passenger side front bumper. It still reside there.
My dash heater seems to work fine, and I no longer have to repair the coolant pump.

Dean

95 Magna 5280

Re: Circulation pumps

Reply #4 –
Yahoo Message Number: 80298
My 1997 Intrigue is in the shop right now because of a leak in the seal of the pump in the rear. It looks to me like the purpose of the pump is to pump coolant to the front of the coach to provide heat for the over-the-road heater. The mechanic asked me if I wished to bypass the pump or to repair/replace it. Is that what you are talking about, Dean? Do any others have experience with removing the pump? Comments?

Jerry

1997 Intrigue

Re: Circulation pumps

Reply #5 –
Yahoo Message Number: 80299
That pump comes into play when one runs the Wabasco heater system to circulate the water through the heat exchanger inside. Without it, I think the effectiveness of the hot water heat system would suffer. if you are thinking of replacement, check this pump out. No shaft seals to ware and leak.

http://www.go2marine.com/item/198233/mag-drive-circulating-pumps-12volt-5-0-26-5-gpm-cm-10-30-10-24502-03.html?WT.mc_id=b1
Leonard

97' Magna 5418

Re: Circulation pumps

Reply #6 –
Yahoo Message Number: 80304
I have replaced that same pump in my coach a few months ago. It does provide hot coolant to the dash heater on my coach.

Larry, 03 Allure, 30856

Re: Circulation pumps

Reply #7 –
Yahoo Message Number: 80316
Mine started leaking in the rear engine compartment on the road so had it bypassed. Talked to Chris

Snyder and Bob at OMC and they said with the pump up front the rear one wasn't necessary in my case

and would just fail again because of the heat and plastic parts. Been driving three years without it and everything is OK as the front pump is working fine.
TWI 2004 Intrigue 11731

Original Message:
-----------------

From: Leonard Kerns leonardk12@... Date: Tue, 19 Jun 2012 10:47:40 -0700 To: Country-Coach-Owners@yahoogroups.com Subject: Re: [Country-Coach-Owners] Re: Circulation pumps

That pump comes into play when one runs the Wabasco heater system to circulate the water through

the heat exchanger inside. Without it, I think the effectiveness of the hot water heat system would

suffer. if you are thinking of replacement, check this pump out. No shaft seals to ware and leak.

http://www.go2marine.com/item/198233/mag-drive-circulating-pumps-12volt-5-0- 26-5-gpm-cm-

10-30-10-24502-03.html?WT.mc_id=b1

Leonard

97' Magna 5418

Re: Circulation pumps

Reply #8 –
Yahoo Message Number: 80327
Jerry,

I bypassed the first of these pumps by the side of the road in a gravel stockpile in Nevada two years ago. This is the pump which circulates engine coolant forward to the dash heater. I had it replaced with routine service in Oregon. That one lasted almost two years, until I bypassed that one somewhere in Arizona this past winter. I looked into replacing it again now here in Florida.
CC wanted $400 plus for the part, ridiculous. The company whose pump just failed wants just less than $200 for it. I talked with a company rep who told me in essence, too bad that pump is for school buses. We don't know anything about RV applications. And they are coming out with a "new improved pump" with a synthetic body which will last better in the fall.
I am leaving it bypassed. I think if I was doing much winter travel in the cold northlands it might be an issue. However, I am currently not planning on that.

For what its worth.. IMHO....

Terry

97 Intrigue 10392

Re: Circulation pumps

Reply #9 –
Yahoo Message Number: 80336
Jerry, yes that is the school bus pump that pushes hot coolant to the dash heater. I removed it, still get dash heat and still get hot water at campsite upon arrival. I do not have a diesel water heating system.

Dean

95 Magna 5280

Re: Circulation pumps

Reply #10 –
Yahoo Message Number: 80345
Terry and Dean,

Thanks for the info. My mechanic says he has located parts to repair the pump for about $200 parts and labor. He has done good economical work for me in the past, so I told him to go ahead and do it. It's good to have confirmation of the purpose of the pump and to know others' experience.
I have been very grateful to all the members of this group who so freely share their knowledge.

Thanks again.

Jerry

97 Intrigue