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Onan fuel pump [message #321618]

Fri, 04 August 2017 10:46

Bill Shourt

Messages: 33
Registered: January 2005
Location: Sherman Oaks ,Ca

Karma: 0

Member

I think that my fuel pump may be done for, it just keeps ticking away with the engine not running and board jumpered.
If I need a new one should I buy an Onan replacement or is there another reliable pump that people are happy with ?

Bill and Michele Shourt
78 Kingsley, origional

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Re: [GMCnet] Onan fuel pump [message #321619 is a reply to message #321618]

Fri, 04 August 2017 10:55

jimk

Messages: 6734
Registered: July 2006
Location: Belmont, CA

Karma: 9

Senior Member

Bill go to our sight under ONAN and get the origional one.
Maybe it is not your pump, could be your carb.
Call me so we can discuss.

On Fri, Aug 4, 2017 at 8:46 AM, Bill Shourt wrote:

> I think that my fuel pump may be done for, it just keeps ticking away with
> the engine not running and board jumpered.
> If I need a new one should I buy an Onan replacement or is there another
> reliable pump that people are happy with ?
>
>
> --
> Bill and Michele Shourt
> 78 Kingsley, origional
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502

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Re: [GMCnet] Onan fuel pump [message #321620 is a reply to message #321619]

Fri, 04 August 2017 11:20

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

If the fuel pump keeps ticking there is a good chance it is a lack of fuel problem. That can be caused by no enough fuel inthe tank or a cracked hose onthe feed side of the pump to the tank.

The second thing that could be wrong is the little check valve ball inside the pump is gummed up. Take the bottom off of the pump, then the filter, and then a little wire spring clip. You will have access to the ball and a spring. Clean it all up and put it back together again.

If you need a new filter and bottom gasket, Go go NAPA. They have them under their own part number because NAPA sells that pump or a similar under their own brand name.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: [GMCnet] Onan fuel pump [message #321622 is a reply to message #321620]

Fri, 04 August 2017 13:02

Justin Brady

Messages: 769
Registered: April 2015
Location: Bell Buckle, TN

Karma: 11

Senior Member

Pull the line to the carb and then jumper the pump and see if it's pumping anything.
If not then disconnect the inlet line from the pump and hook a few feet of fuel line to it and put that fuel line in a gas can.
Repeat step one.
If that fixes your problem then you've got either a broken hose or a blockage somewhere (or the coach tank is too low to feed the genset)

If not, do as Ken suggested and clean out the pump.
If that doesn't work, THEN get a new one Very Happy

Justin Brady http://www.thegmcrv.com/ 1976 Palm Beach 455

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Re: [GMCnet] Onan fuel pump [message #321623 is a reply to message #321619]

Fri, 04 August 2017 13:20

Bill Shourt

Messages: 33
Registered: January 2005
Location: Sherman Oaks ,Ca

Karma: 0

Member

Thanks Jim, I will give you a call

Bill and Michele Shourt
78 Kingsley, origional

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Re: [GMCnet] Onan fuel pump [message #321631 is a reply to message #321622]

Fri, 04 August 2017 16:19

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

SONICJK wrote on Fri, 04 August 2017 13:02

Pull the line to the carb and then jumper the pump and see if it's pumping anything.
If not then disconnect the inlet line from the pump and hook a few feet of fuel line to it and put that fuel line in a gas can.
Repeat step one.
If that fixes your problem then you've got either a broken hose or a blockage somewhere (or the coach tank is too low to feed the genset)

If not, do as Ken suggested and clean out the pump.
If that doesn't work, THEN get a new one

If you do replace the pump, throw the old one away in my direction. We use the same pump as a boost pump on low wing aircraft. We clean them and replace the filters all the time.

We have always get by cleaning them and replacing the gasket and filter. For that reason I do not have any spares around because we never buy new ones. I had two GMCers tell me that they would give me their old ones. When they found out how easy it is to refurbish the old removed ones they kept the removed pumps for themselves.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: [GMCnet] Onan fuel pump [message #321635 is a reply to message #321618]

Fri, 04 August 2017 17:06

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Bill,

See MM X-7525 / Section 24C - Onan Motor Generator / Page 22 - 24 - Fuel System for detailed information on the fuel pump, carb, and
solenoid.

Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Bill Shourt
Sent: Saturday, August 5, 2017 1:46 AM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Onan fuel pump

I think that my fuel pump may be done for, it just keeps ticking away with the engine not running and board jumpered.
If I need a new one should I buy an Onan replacement or is there another reliable pump that people are happy with ?

Bill and Michele Shourt
78 Kingsley, origional

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] Onan fuel pump [message #321644 is a reply to message #321635]

Sat, 05 August 2017 08:09

William Shourt

Messages: 35
Registered: August 2015

Karma: 0

Member

Thanks Ken, Justin and Rob. As you suggest a little cleaning and it's back in business. Does anyone know the pump number or where I can source replacement rubber parts?

Sent from my iPad

> On Aug 4, 2017, at 3:06 PM, Rob Mueller wrote:
>
> Bill,
>
> See MM X-7525 / Section 24C - Onan Motor Generator / Page 22 - 24 - Fuel System for detailed information on the fuel pump, carb, and
> solenoid.
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Bill Shourt
> Sent: Saturday, August 5, 2017 1:46 AM
> To: gmclist@list.gmcnet.org
> Subject: [GMCnet] Onan fuel pump
>
> I think that my fuel pump may be done for, it just keeps ticking away with the engine not running and board jumpered.
> If I need a new one should I buy an Onan replacement or is there another reliable pump that people are happy with ?
>
> Bill and Michele Shourt
> 78 Kingsley, origional
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Re: [GMCnet] Onan fuel pump [message #321652 is a reply to message #321644]

Sat, 05 August 2017 10:44

Carl S.

Messages: 4186
Registered: January 2009
Location: Tucson, AZ.

Karma: 13

Senior Member

"Thanks Ken, Justin and Rob. As you suggest a little cleaning and it's back in business."

If that doesn't work for the long run (it didn't for me, only temporarily), don't go cheap. By the "direct fit" ump from Jim and don't mess with cheap ones. I learned that the hard way.

Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member

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Re: [GMCnet] Onan fuel pump [message #321675 is a reply to message #321635]

Sat, 05 August 2017 21:09

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

The only rubber part I have ever re-placed is the bottom gasket. Some were cork. They will dry rot over the years so we buy the kit form NAPA with the lower gasket and filter together. They use to be around $10.00 as few years back. I do not have the part number. I do have one hanging on a peg of my tool board in my hangar. Unfortunately I'm 12 miles from there right now.

The Purolator number is PRO 42370

I tried to find it online but was unsuccessful. In my local NAPA they are hanging on a peg on display.

Hey, Hey. I found it NAPA BK 6101086

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: [GMCnet] Onan fuel pump [message #321678 is a reply to message #321675]

Sat, 05 August 2017 21:44

Carl S.

Messages: 4186
Registered: January 2009
Location: Tucson, AZ.

Karma: 13

Senior Member

Ken,

I have the old pump I took off my old Onan a few years ago. It's a "Jidosha Kiki" pump that looks physically like the OE pump.

If you are coming to the GMCI in Tucson next April, I'll try to remember to give it to you if you want it.

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Re: [GMCnet] Onan fuel pump [message #321681 is a reply to message #321678]

Sun, 06 August 2017 04:20

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

Jidoska? That is a new one on me. If you are going to throw it away, then bring it to Tuscon.

One other thing I forgot to mention is on the original Facet pumps is is not uncommon to find rust in the bottom cap on low use airplanes. That is a low place where water can settle. Normally we drain the sumps in all tanks before every flight so you would not expect to see water in the bottom of the pump, but we have seen it. Also airplane NEVER use ethanol diluted fuel, so there is no ethanol to mix with the water and carry it away.

Any way on rusted ones we simply bead blast the cap until it is clean and give it a coat of Rustoleum Gray.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: [GMCnet] Onan fuel pump [message #321685 is a reply to message #321681]

Sun, 06 August 2017 07:54

William Shourt

Messages: 35
Registered: August 2015

Karma: 0

Member

Thanks Ken, the rubber gasket in the bottom is hard but not leaking and filter has seen better days.

Sent from my iPad

> On Aug 6, 2017, at 2:20 AM, Ken Burton wrote:
>
> Jidoska? That is a new one on me. If you are going to throw it away, then bring it to Tuscon.
>
> One other thing I forgot to mention is on the original Facet pumps is is not uncommon to find rust in the bottom cap on low use airplanes. That is a
> low place where water can settle. Normally we drain the sumps in all tanks before every flight so you would not expect to see water in the bottom of
> the pump, but we have seen it. Also airplane NEVER use ethanol diluted fuel, so there is no ethanol to mix with the water and carry it away.
>
> Any way on rusted ones we simply bead blast the cap until it is clean and give it a coat of Rustoleum Gray.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Re: [GMCnet] Onan fuel pump [message #321689 is a reply to message #321681]

Sun, 06 August 2017 09:26

Carl S.

Messages: 4186
Registered: January 2009
Location: Tucson, AZ.

Karma: 13

Senior Member

Ken Burton wrote on Sun, 06 August 2017 02:20

Jidoska? That is a new one on me. If you are going to throw it away, then bring it to Tuscon.

One other thing I forgot to mention is on the original Facet pumps is is not uncommon to find rust in the bottom cap on low use airplanes. That is a low place where water can settle. Normally we drain the sumps in all tanks before every flight so you would not expect to see water in the bottom of the pump, but we have seen it. Also airplane NEVER use ethanol diluted fuel, so there is no ethanol to mix with the water and carry it away.

Any way on rusted ones we simply bead blast the cap until it is clean and give it a coat of Rustoleum Gray.

Okay, I'll save it for you.

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Re: [GMCnet] Onan fuel pump [message #321690 is a reply to message #321675]

Sun, 06 August 2017 09:37

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

I found this on line. It might help someone.

http://www.pbase.com/mainecruising/facet_fuel_pump_filter&page=1

Also besides the previously posted NAPA source, Aircraft Spruce also has it.

http://www.aircraftspruce.com/catalog/eppages/facetpumps4.php

Do NOT forget Applied GMC. He stocks just about everything GMC and is an Onan distributor. I'm sure he has it.

These Faceet Gold-Flo "interrupter" pumps were used on everything like generators, welders, aircraft, and Marine applications.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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