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Which Fuel Pump Does My Onan Take?
10-28-2011, 02:56 PM
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#1
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Junior Member
Join Date: Sep 2011
Posts: 10
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I'm trying to figure out the correct part number for the fuel pump on my Onan generator, 4.0BGE-1R/26101C, ser# A870861035. I keep getting different part numbers fromoutside sources. Does anyone know the correct part #? Its the pump that looks like a cylinder, its not square. Or will any of the cylinder shape type's work just the same? thank for any info.
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10-28-2011, 03:18 PM
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#2
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Senior Member
Join Date: Jun 2009
Posts: 1,075
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Parts book says use 149-2110 starting with generator S/N F860825893
onan 149-2110 | eBay
Units before S/N F860825893 use 149-1994
onan 149-1994 | eBay
You might try searching Onan Generators - SmokStak to see if there is a cheaper alternative.
Dave
__________________
Dave in Virginia
1978 Winnebago Chieftain
Dodge M400 - 440-3
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10-28-2011, 07:22 PM
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#3
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Senior Member
Workhorse Chassis Owner
Join Date: Aug 2010
Posts: 130
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the part number should be on the fuel pump itself, at least it was on mine-I was able to x-ref to the updated number then bought it off of ebay when I changed it out..
__________________
2005 Itasca Sunrise 38J W24 Workhorse
2011 Chevy Silverado 1500 Crew Cab LT
2009 Jeep Wrangler Sahara/U.S. Navy 1978-1986
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10-28-2011, 08:05 PM
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#4
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Senior Member
Join Date: Jun 2009
Posts: 1,075
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For reference:
Cutoff S/N F860825893 translates to:
F86 = Manufactured in June of 1986
0 = Minneapolis plant
825893 = Actual S/N
OP's S/N A870861035 translates to:
A87 = Manufactured in January of 1987
0 = Minneapolis plant
861035 = Actual S/N
So, it is later and would use 149-2110
Dave
__________________
Dave in Virginia
1978 Winnebago Chieftain
Dodge M400 - 440-3
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10-29-2011, 10:04 AM
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#5
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Senior Member
Fleetwood Owners Club
Join Date: Mar 2011
Posts: 1,393
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If in doubt, call Onan with the model number.
__________________
2009 Amer Coach Allegiance 40X With Spartan Chassis
400 HP Cummins ISL
Pulling a Honda CRV
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10-30-2011, 06:42 AM
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#6
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Senior Member
Workhorse Chassis Owner
Join Date: May 2009
Location: Kansas City, MO./ Livingston, TX
Posts: 137
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What makes you think you need a new fuel pump? If your having a fuel problem with your gen. Try this first. Get a gas can and stick a fuel line into it and attach it to the fuel pump, try running your gen with this fuel source.
There are many threads on this site about MH gen fuel lines that dry rot and crack and let air into the fuel line. Some gens will run for a while then quit, some will not depending on the size of the fuel line leak.
__________________
06 Hurricane 34FT WH W20 Chassis 8.1L 78K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, Red Max Pro 3 Wax, KVH R5 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee
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10-30-2011, 07:44 AM
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#7
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Senior Member
Workhorse Chassis Owner
Join Date: May 2009
Location: Kansas City, MO./ Livingston, TX
Posts: 137
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__________________
06 Hurricane 34FT WH W20 Chassis 8.1L 78K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, Red Max Pro 3 Wax, KVH R5 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee
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10-30-2011, 07:58 AM
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#8
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 1,398
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One word of caution. Do not just match up the pump with another one. The Onan pump only puts out about 2 psi. Other pumps made by the same manuf. put out twice that much. We had many customers just match up the pump and had problems.
__________________
15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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10-30-2011, 08:59 AM
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#9
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Senior Member
Join Date: Jun 2009
Posts: 1,075
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For your Spec C unit, fuel pump pressure values for the 2 pumps are located on pdf pages 49/50 of http://www.cumminsonan.com/www/pdf/manuals/965-0530.pdf .
Dave
__________________
Dave in Virginia
1978 Winnebago Chieftain
Dodge M400 - 440-3
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