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07-08-2007, 03:07 PM
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#1
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Senior Member
Newmar Owners Club
Join Date: Sep 2005
Location: Orange Park, FL
Posts: 813
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I have noticed that the water pump produces pulses of water at lower demand levels. When the shower is running the flow rate is steady, but when the toilet is filling, or a sink is being filled, the flow rate cycles up & down.
Is this normal for Newmar water pumps? And if so what is a possible fix?
__________________
Mark & Sheila Heilman & The 3 Fur-Ball Princesses - Nikko, Mai-Thai & Andy
'07 MADP 4523, 2012 GMC Terrain SLT 2 wd
Blue Ox Alladin Tow Bar, M&G Engineering Dinghy Braking System
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07-08-2007, 03:07 PM
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#2
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Senior Member
Newmar Owners Club
Join Date: Sep 2005
Location: Orange Park, FL
Posts: 813
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I have noticed that the water pump produces pulses of water at lower demand levels. When the shower is running the flow rate is steady, but when the toilet is filling, or a sink is being filled, the flow rate cycles up & down.
Is this normal for Newmar water pumps? And if so what is a possible fix?
__________________
Mark & Sheila Heilman & The 3 Fur-Ball Princesses - Nikko, Mai-Thai & Andy
'07 MADP 4523, 2012 GMC Terrain SLT 2 wd
Blue Ox Alladin Tow Bar, M&G Engineering Dinghy Braking System
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07-08-2007, 03:27 PM
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#3
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Administrator in Memoriam
Newmar Owners Club Retired Fire Service RVer's Spartan Chassis
Join Date: May 2000
Location: Newark, DE
Posts: 25,898
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All water pumps in all RVs do this.....well there may be a few exceptions.
The fix is the addition of an expansion tank.
With an expansion tank the pump runs to fill the tank, then shuts off.
CLICK HERE to see one.
__________________
Adios, Dirk - '84 Real Lite Truck Camper, '86 Wilderness Cimarron TT, previously 4 years as a fulltimer in a '07 DSDP
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07-08-2007, 11:46 PM
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#4
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Senior Member
Newmar Owners Club
Join Date: Sep 2005
Location: Orange Park, FL
Posts: 813
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Thanks Dirk - sounds like an addition to the to-do list. 
Mark
__________________
Mark & Sheila Heilman & The 3 Fur-Ball Princesses - Nikko, Mai-Thai & Andy
'07 MADP 4523, 2012 GMC Terrain SLT 2 wd
Blue Ox Alladin Tow Bar, M&G Engineering Dinghy Braking System
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07-09-2007, 04:11 AM
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#5
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Senior Member
Winnebago Owners Club Pond Piggies Club Appalachian Campers Mid Atlantic Campers
Join Date: Dec 2002
Location: Sarver, PA/Crystal River, FL/Shelocta, PA
Posts: 4,671
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You may want to consider replacing your current pump with a Shurflo Smart Sensor 5.7 GPM.
This pump requires no expansion tank or pressure switch.
-Tom
__________________
Sarver, PA/Crystal River, FL/Shelocta, PA · FMCA 335149 · W3TLN 2005 Suncruiser 38R · W24, no chassis mods needed · 2013 Honda Accord EX-L · 2008 Honda Odyssey EX-L
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07-09-2007, 07:35 AM
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#6
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Administrator in Memoriam
Newmar Owners Club Retired Fire Service RVer's Spartan Chassis
Join Date: May 2000
Location: Newark, DE
Posts: 25,898
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Shurflo Smart Sensor 5.7 GPM
This pump may be another good solution, and the literature indicates it is.
I wonder if anyone has tried it?
__________________
Adios, Dirk - '84 Real Lite Truck Camper, '86 Wilderness Cimarron TT, previously 4 years as a fulltimer in a '07 DSDP
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07-09-2007, 11:20 AM
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#7
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Senior Member
Join Date: Feb 2005
Location: Lake Oklawaha RV Resort(\
Posts: 1,374
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With our 5.7(ordered with the coach from Newmar) still needed a small accumulator. It pumps a lot of water, so if you are dry camping keep an eye out for heavy water users.
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07-09-2007, 11:52 AM
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#8
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Senior Member
Winnebago Owners Club Pond Piggies Club Appalachian Campers Mid Atlantic Campers
Join Date: Dec 2002
Location: Sarver, PA/Crystal River, FL/Shelocta, PA
Posts: 4,671
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Route 66:
Shurflo Smart Sensor 5.7 GPM
This pump may be another good solution, and the literature indicates it is.
I wonder if anyone has tried it? </div></BLOCKQUOTE>
My Suncruiser came standard with a Shurflo 5.7. Have plenty of pressure with no pulsing. I have no expansion tank but it did come with the optional Shurflo strainer filter.
-Tom
__________________
Sarver, PA/Crystal River, FL/Shelocta, PA · FMCA 335149 · W3TLN 2005 Suncruiser 38R · W24, no chassis mods needed · 2013 Honda Accord EX-L · 2008 Honda Odyssey EX-L
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07-09-2007, 04:57 PM
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#9
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Senior Member
Join Date: Jul 2006
Location: Pelican Lake Motor Coach Resort, Naples, Florida
Posts: 1,549
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">still needed a small accumulator </div></BLOCKQUOTE>
Hi Dave! What's that??  Thanks, Paul
__________________
2018 King Aire 4553
2018 Cadillac Escalade
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07-09-2007, 06:22 PM
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#10
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Here ya go Paul, Accumulator 
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07-09-2007, 07:35 PM
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#11
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Senior Member
Join Date: Feb 2005
Location: Lake Oklawaha RV Resort(\
Posts: 1,374
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Paul, Accumulator
[IMG]
Elminates water surging.
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07-10-2007, 06:29 AM
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#12
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Senior Member
Join Date: Jul 2006
Location: Pelican Lake Motor Coach Resort, Naples, Florida
Posts: 1,549
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Hi! Thanks guys!  I think I like the idea of upgrading the pump. Dave, I hope to meet you some day on the road. It seems you have added more great stuff to your coach then anyone I have ever heard of. I would love to see some of it. You should write a book! Paul
__________________
2018 King Aire 4553
2018 Cadillac Escalade
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07-10-2007, 07:56 AM
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#13
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Senior Member
Join Date: Feb 2005
Location: Lake Oklawaha RV Resort(\
Posts: 1,374
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Paul, Thanks , have not had time to do much since traveling here in Alaska(only washed the coach once), hope to get busy when we return to lower 48 in September.
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07-10-2007, 04:12 PM
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#14
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Senior Member
Newmar Owners Club
Join Date: Sep 2005
Location: Orange Park, FL
Posts: 813
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Don't know if this is like comparing apples & oranges, but I installed the Surflo 5.7 in the old 03 KSDP and it helped, but still noisy (to my ears) and still pulses, although not as bad. It too had the strainer.
Think I'll try the accumulator first and see if that helps.
__________________
Mark & Sheila Heilman & The 3 Fur-Ball Princesses - Nikko, Mai-Thai & Andy
'07 MADP 4523, 2012 GMC Terrain SLT 2 wd
Blue Ox Alladin Tow Bar, M&G Engineering Dinghy Braking System
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