Home » Public Forums » GMCnet » Floor Cutout location for fuel sender removal
| Floor Cutout location for fuel sender removal [message #252780] |
Fri, 20 June 2014 16:56  |
lotsofspareparts
Messages: 726
Registered: May 2014
Location: Arlington, WA
Karma: -9
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I stumbled on the location online shortly after getting the coach home.
I will be danged cause I didn't bookmark the page, and can no longer find it.
Does anyone have the link or the dimensions handy?
Jared
Jared & Tina Lazaron + 14yr old Daughter.....
77 Eleganza II "Recherché".....
73 Canyon Lands 230 "Elephant"
[Updated on: Fri, 20 June 2014 18:07] Report message to a moderator |
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| Re: Floor Cutout location for fuel sender removal [message #252800 is a reply to message #252780] |
Fri, 20 June 2014 19:55  |
lotsofspareparts
Messages: 726
Registered: May 2014
Location: Arlington, WA
Karma: -9
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Great!! Thanks a lot.
Both of my senders need to be reworked as they both read way above full. I have checked all of the wiring forward of the senders and the gauge works as it should when the tan wires are grounded.
Not really in the mood to drop the tanks, but will if I feel it is necessary after getting the senders up through the floor.
Thanks again!!
Jared
Jared & Tina Lazaron + 14yr old Daughter.....
77 Eleganza II "Recherché".....
73 Canyon Lands 230 "Elephant"
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| Re: [GMCnet] Floor Cutout location for fuel sender removal [message #252801 is a reply to message #252800] |
Fri, 20 June 2014 20:24 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Jared,
You can have the tanks out and installed in a couple of days. Removing them allows you to inspect the hoses on top of the tanks.
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Jun 20, 2014, at 8:55 PM, Jared wrote:
> Great!! Thanks a lot.
>
> Both of my senders need to be reworked as they both read way above full. I have checked all of the wiring forward of the senders and the gauge works
> as it should when the tan wires are grounded.
>
> Not really in the mood to drop the tanks, but will if I feel it is necessary after getting the senders up through the floor.
>
> Thanks again!!
>
> Jared
> --
> Jared & Tina Lazaron
>
> Daughter: Alina Lazaron 7yrs old
>
> 77 Eleganza II "Recherché"
>
> GO SEAHAWKS!!
>
> Arlington, WA 98223
> _______________________________________________
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Floor Cutout location for fuel sender removal [message #252818 is a reply to message #252810] |
Sat, 21 June 2014 02:07 |
glenn2726
Messages: 234
Registered: June 2014
Location: Topeka, Kansas
Karma: 2
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Hey Jared, let me know how this goes as i am going to probably be doing the same and let me know how deep to cut and how big a hole you cut. I guess you can just screw a metal plate over the hole when done for access again as needed. Pictures would be good also...Glenn
Glenn W
Topeka, KS
1974 GMC 26 ft. Color:Camel Interior:Canyon Land
Side Bath, Rear Sitting Area
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| Re: [GMCnet] Floor Cutout location for fuel sender removal [message #252823 is a reply to message #252818] |
Sat, 21 June 2014 06:29 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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I really hope you guys are not thinking you can avoid dropping your tanks
by cutting hole in your floors -- hopefully over the senders. From all
I've read, each of your coaches needs the rubber supply and vent hoses (3
on each tank plus one more on the rear one for the Onan) replaced with
modern ethanol resistant hoses (at least 30R9, preferably 30R14). And
replacing most, if not all of those with steel lines is preferable.
Because the hoses are usually pressed tightly between the floor and the
top of the tank, it's unlikely you'll be able to replace them with the
tanks in place. You certainly will not be able to install steel lines
without dropping the tanks. IMHO, replacing those hoses is far more
important than getting senders working, or even cleaning debris from the
tanks (which will require removal anyway).
Remove the tanks now, clean them if necessary, repair or replace the
senders, and install good lines. While you've got the tanks down, you can
easily tell where and how big to cut holes in the floor (which I personally
would not do unless using in-tank pumps -- another whole story).
Sooner or later, those tanks will have to come down; best sooner.
JMHO,
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc.
www.gmcwipersetc.com
On Sat, Jun 21, 2014 at 3:07 AM, Glenn Whitt wrote:
> Hey Jared, let me know how this goes as i am going to probably be doing
> the same and let me know how deep to cut and how big a hole you cut. I
> guess
> you can just screw a metal plate over the hole when done for access again
> as needed. Pictures would be good also...Glenn
> --
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Floor Cutout location for fuel sender removal [message #252831 is a reply to message #252828] |
Sat, 21 June 2014 08:00 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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yessss to what they said
and here is some more poop
http://gmcmotorhome.info/Fuel.html
just be aware, "no one drops their tanks ,one, time:>)
erf
On Sat, Jun 21, 2014 at 5:47 AM, Jim Wagner wrote:
> Jared,
> Here are some photos of my floor cutouts for the gas tanks. As you can see
> I installed steel lines. This I did with the tanks dropped. Cutting the
> holes will allow you to take a look at the hoses and pickup. The hoses are
> a snug fit on the top of the tank so to replace them you would need the
> tanks lowered or removed.
> Good luck
>
> http://www.gmcmhphotos.com/photos/g5702-gas-tank-location-for-26-gmc.html
>
> Jim Wagner
> 76 GMC500
> 71 Vega355
> 69 Vette383
> Brook Park, oh
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--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
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Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Floor Cutout location for fuel sender removal [message #252833 is a reply to message #252802] |
Sat, 21 June 2014 08:39 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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lotsofspareparts wrote on Fri, 20 June 2014 21:38Couple of days 
I am willing to drop them but wanted the holes anyways. I will pull the senders and repair them or send them out for repair if it is beyond my scope. It will give me a chance to check out the fuel lines and inspect the interior of the tanks.
I have a clear fuel filter installed before my electric fuel pump and it shows no contamination so am remaining optimistic for now.
This coach was gone through in 91, parked in 2002, and then I bought it this last May.
Jared
Jared,
Last time I had my tanks down to repair the senders (again) the total time for tank removal and reinstallation was less than a day. I had too much fuel onboard to use the drains last time, so I had to pump both tanks out into a waiting drum. At 10GPM, that still did not add much to the working time.
If you take down the fill pipe first, things get much easier to do.
Then, get the 10$(perpetually on sale) set of HF cargo straps and use them to let the tanks down. Start with the front tank because it is easier to get at the fasteners. Use the straps to let the tanks down as practice for putting them back up. Straps work better than jacks because you will have to be under the tank to work and that is where the jack(s) would have to be.
When you are under there, don't forget to replace the fill vent line that runs in the frame rail. It is Teed right above the auxiliary (front) tank fill neck. I kept the two vent separate to under the cab floor. This made fueling go much better.
If you want to confer, my cell is 734-55two-35two3. Tell me who are at the start of the call because that number is reserved for clients and friends and others callers are not given much respect.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Floor Cutout location for fuel sender removal [message #252840 is a reply to message #252780] |
Sat, 21 June 2014 10:09 |
glenn2726
Messages: 234
Registered: June 2014
Location: Topeka, Kansas
Karma: 2
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Senior Member |
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Great info on the tanks and fuel lines. The PO had dropped and cleaned my tanks previously, but with the fuel line problem I will definitely need to drop the tanks in order to make repairs and replace lines. The PO said that he couldn't get an elbow for the rear (main tank) and had to use some type of hose that he could bend but that one end of the original hose is smaller than the other...any ideas on where to get a replacement? What did you do to get the fill tube hoses to seal up tight? I noticed when I poured 6 gallons in the filler I had leaks at all the hose fittings at the tanks..I tightened the hose clamps but don't know yet if that sealed them. Thanks, Glenn
Glenn W
Topeka, KS
1974 GMC 26 ft. Color:Camel Interior:Canyon Land
Side Bath, Rear Sitting Area
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| Re: Floor Cutout location for fuel sender removal [message #252865 is a reply to message #252780] |
Sat, 21 June 2014 17:00 |
lotsofspareparts
Messages: 726
Registered: May 2014
Location: Arlington, WA
Karma: -9
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Senior Member |
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First off, I want to thank everyone for the great responses, seems as it may be better to drop the tanks and change the lines now rather than later, I am trying to build a safe reliable coach for my me and my family.
I will go ahead with the drop, but will still be putting holes in the floor to be able to get to the senders again if need be.
Thanks again!!
Jared
Jared & Tina Lazaron + 14yr old Daughter.....
77 Eleganza II "Recherché".....
73 Canyon Lands 230 "Elephant"
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| Re: Floor Cutout location for fuel sender removal [message #252869 is a reply to message #252840] |
Sat, 21 June 2014 17:43 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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glenn2726 wrote on Sat, 21 June 2014 08:09Great info on the tanks and fuel lines. The PO had dropped and cleaned my tanks previously, but with the fuel line problem I will definitely need to drop the tanks in order to make repairs and replace lines. The PO said that he couldn't get an elbow for the rear (main tank) and had to use some type of hose that he could bend but that one end of the original hose is smaller than the other...any ideas on where to get a replacement? What did you do to get the fill tube hoses to seal up tight? I noticed when I poured 6 gallons in the filler I had leaks at all the hose fittings at the tanks..I tightened the hose clamps but don't know yet if that sealed them. Thanks, Glenn
You'll find ANYTHING you need for your GMC at Applied GMC: http://appliedgmc.com/
Again, ANYTHING you need to repair update, or upgrade your GMC Motorhome.
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: Floor Cutout location for fuel sender removal [message #252872 is a reply to message #252869] |
Sat, 21 June 2014 18:34 |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Carl S. wrote on Sat, 21 June 2014 17:43glenn2726 wrote on Sat, 21 June 2014 08:09Great info on the tanks and fuel lines. The PO had dropped and cleaned my tanks previously, but with the fuel line problem I will definitely need to drop the tanks in order to make repairs and replace lines. The PO said that he couldn't get an elbow for the rear (main tank) and had to use some type of hose that he could bend but that one end of the original hose is smaller than the other...any ideas on where to get a replacement? What did you do to get the fill tube hoses to seal up tight? I noticed when I poured 6 gallons in the filler I had leaks at all the hose fittings at the tanks..I tightened the hose clamps but don't know yet if that sealed them. Thanks, Glenn
You'll find ANYTHING you need for your GMC at Applied GMC: http://appliedgmc.com/
Again, ANYTHING you need to repair update, or upgrade your GMC Motorhome.
What Carl said.
It is a good idea to put holes in your floor when you have the tanks down. Look at Jim Waggoner and Wally Anderson photos, among others, before doing it. I dropped my tanks in 09. Put steel lines on top. In 2010 I decided to put in tank fuel pumps in for my fuel injection. Bought all the parts but have not done the job yet. I need one other educated person to help when I do it. Just have not got around to it. No other owners live around me anywhere. Make sure that you make the holes in the floor large enough. If you put in tank pumps in, the holes will need to be much larger than if you just put new or rebuilt senders in. Jim K has pumps for carbs or fuel injection. I always spend lots of time on the photo site before doing any major job. It really helps to follow others who have walked the trail ahead of us.
Good luck,
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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| Re: Floor Cutout location for fuel sender removal [message #252909 is a reply to message #252780] |
Sun, 22 June 2014 09:59 |
glenn2726
Messages: 234
Registered: June 2014
Location: Topeka, Kansas
Karma: 2
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Senior Member |
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I'm definitely going to drop the tanks in order to install new fuel lines and I think the steel lines are in order due to the clearance issue. Since my coach still has original fuel pump on the engine and original ignition if I go steel now then should be ready for future improvements. My fuel gauge shows full even though the tank is not full so will have to take a look at the senders while dropped and the wiring. Thanks for all the great info and links...I'm sure will have more questions when I finally get motivated (or run out of other items to fix)...lol...Glenn
Glenn W
Topeka, KS
1974 GMC 26 ft. Color:Camel Interior:Canyon Land
Side Bath, Rear Sitting Area
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