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Author Topic: Motor-Aid  (Read 654 times)

RedT

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Motor-Aid
« on: February 27, 2018, 08:57:14 AM »
Though I haven't been able to find a schematic of the Winnebago Motor-Aid system, my understanding is that, when the engine is operating, coolant flows through a heat exchanger in the water heater. The result is that hot water is available without the water heater being switched "ON".

Is there a shut-off valve in the system? The reason I ask is because we normally experienced hot water after parking, but now do not. Any advice?
RedT, US Air Force Retired
2004 Itasca Meridian 36G
2003 Jeep Liberty
M&G Brake System, VMSpc
Pressure Pro TPMS

afchap

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    • The Empty Nest
Re: Motor-Aid
« Reply #1 on: February 27, 2018, 09:15:56 AM »
No shut-off valve on mine that I am aware of. When we replaced the water heater we had the clamp the hose to keep the coolant from escaping.
Paul ... (KE5LXU), was fulltimin', now parttimin'...
'03 Winnebago Ultimate Advantage 40e
'05 Honda Odyssey toad
Escapees, FMCA, SMART, WIT
http://www.pjrider.com

Mile High

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  • Lone Tree, CO
Re: Motor-Aid
« Reply #2 on: February 27, 2018, 09:42:59 AM »
I can't go back to 2004 on the Winnebagoind page, but here is what my 2013 Motoraid looks like - it just taps right into the heater hoses that run to the cab - no valve.  If you have cab heat, you should have hot water.

Brad and Dory
2013 Winnebago Itasca Meridian 42E (new to us 2016)
2013 Jeep Wrangler Unlimited Sahara
FMCA 457993 / WIT W170238

cbeierl

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Re: Motor-Aid
« Reply #3 on: February 27, 2018, 10:21:43 AM »
My Vectra has two yellow 1/4 turn shutoff valves for the coach heater (& motoraid) back by the engine on the drivers side underneath the coach.
Chris Beierl
2005 Winnebago Vectra 36RD

John Canfield

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Re: Motor-Aid
« Reply #4 on: February 27, 2018, 11:40:58 AM »
Chris - do you have the Cat or Cummins engine?
--John
2005 Horizon 40AD, 2006 Jeep Rubicon Unlimited
Our Horizon projects
Our weather

cbeierl

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Re: Motor-Aid
« Reply #5 on: February 27, 2018, 12:17:01 PM »
Chris - do you have the Cat or Cummins engine?

CAT C7 350HP
Chris Beierl
2005 Winnebago Vectra 36RD

John Canfield

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Re: Motor-Aid
« Reply #6 on: February 27, 2018, 02:18:09 PM »
I wonder if my Cummins has the same layout as far as that hose routing, I'll have to take a look.
--John
2005 Horizon 40AD, 2006 Jeep Rubicon Unlimited
Our Horizon projects
Our weather

cbeierl

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Re: Motor-Aid
« Reply #7 on: February 27, 2018, 02:38:13 PM »
This is what my shutoff valves look like:
Chris Beierl
2005 Winnebago Vectra 36RD

RedT

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Re: Motor-Aid
« Reply #8 on: February 27, 2018, 06:54:58 PM »
Thanks, Chris. I'll have to crawl under there tomorrow and see what I can find. I'm thinking the water lines run on the passenger side frame rail, since the cab heater and water heater are on the passenger side of the coach. I've checked the vacuum valves, the water shut-off on the cab heater does open and close. No vacuum leaks.
RedT, US Air Force Retired
2004 Itasca Meridian 36G
2003 Jeep Liberty
M&G Brake System, VMSpc
Pressure Pro TPMS

RedT

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Re: Motor-Aid
« Reply #9 on: February 28, 2018, 04:04:13 PM »
Crawled under the old Meridian today and there it was! In the off position. Flipped the handle and will see the results next week. Thanks again, Chris and all who responded. Just goes to show ya you ain't too old to learn! And this is the place to learn!
RedT, US Air Force Retired
2004 Itasca Meridian 36G
2003 Jeep Liberty
M&G Brake System, VMSpc
Pressure Pro TPMS

cbeierl

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Re: Motor-Aid
« Reply #10 on: February 28, 2018, 04:38:38 PM »
Crawled under the old Meridian today and there it was! In the off position. Flipped the handle and will see the results next week. Thanks again, Chris and all who responded. Just goes to show ya you ain't too old to learn! And this is the place to learn!

Did you check both (feed & return) valves?  Perhaps they were off because of a leak in the heater core up front?  You should check for leakage up there now that you've turned them on.
Chris Beierl
2005 Winnebago Vectra 36RD

RedT

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Re: Motor-Aid
« Reply #11 on: March 01, 2018, 06:07:33 AM »
Quote
Did you check both (feed & return) valves?  Perhaps they were off because of a leak in the heater core up front?  You should check for leakage up there now that you've turned them on.

Yes, that's the plan.
RedT, US Air Force Retired
2004 Itasca Meridian 36G
2003 Jeep Liberty
M&G Brake System, VMSpc
Pressure Pro TPMS