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Old 02-01-2017, 01:50 AM   #21
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Join Date: Nov 2015
Location: Midwest
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Year: 2003
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Engine: 5.9L Cummins
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Fuel issues- Tubing info

So, I pressurized the fuel tank - first I blast it good to get mud daubers out of vent lines, then plugged vent line with a bolt and shot 5 psi in tank.

Was like a fountain...anywhere there was a radius, she sprayed- about 4-5 spots. Close inspection under the corrugated wire hose cover revealed cracks. If fuel is coming out.... air is getting sucked in.All the new additives/alcohol/methanol/bio gunk they add to fuels now to increase their profits just eat our hoses and seals.

It's already got 1/2 line all the way to lift pump, 3/8 return and 5/16 for genset. Nothing kills like overkill, I always say.

1) Did some research, the best stuff out there is the hard lines- steel or stainless, but Swagelok fittings are pricey and brass won't compress stainless....No copper or aluminum- vibrations work harden and crack.
1/2''Dia X .035 X 100ft Type 316L coiled Stainless Steel Tubing .65/foot on ebay.

2) PTFE (Teflon) lined braided hose- good for ridiculous pressures and impervious to chemicals, good to 500 degrees. Needs special aluminum fittings=no barb fitting recycle. Lifetime stuff, used in racecars- even brake lines. Fittings killed the deal, pricey. Pandababy2007 has kits on ebay

3) Trident Rubber makes USCG marine hose that is lined to protect the rubber called TYPE A1 BARRIER LINED - can use existing fittings and is about $2/ foot an Amazon.

I don't want to repeat this job every 13 years, don't want air in the lines and don't want degraded rubber in my fuel.

May have to drop the 175 lb tank to see what is going on up there, will stick borescope camera in there before committing to that.
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Old 02-15-2017, 10:23 PM   #22
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Interior

Almost done with the interior- came out nice. Found a couple couches at Goodwill and some cabinets at Lowes.


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Old 02-16-2017, 01:53 AM   #23
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Paging George Pullman. George Pullman to a gilded courtesy telephone please.
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Millicent The Bus - roof raised two feet, toy-hauler tailgate.
http://www.skoolie.net/forums/f11/th...gate-1564.html
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Old 02-16-2017, 12:11 PM   #24
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Quote:
Originally Posted by Elliot Naess View Post
Paging George Pullman. George Pullman to a gilded courtesy telephone please.
Where's the "like" button?
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Old 02-16-2017, 03:41 PM   #25
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Wow, what great work! That was really Quick!



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Old 02-16-2017, 05:54 PM   #26
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Wow, what great work! That was really Quick!



Yeah, turned-out ok. The granite inlay was tough, but it works. Bus looks a lot bigger with that lens, too.
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Old 05-31-2017, 01:28 PM   #27
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Thumbs up Update on fuel system- Great News !

Been awhile since I updated my page and much has happened. I need to get my photos off old phone to add later.

I drained the fuel tank- thought it was empty, was 60 gallons full of clean fuel, so I put that in my other truck. Fuel gauge sender was busted, so a million bolts later, I dropped the fuel tank in the driveway. I got it out and cleaned, sanded, primed, painted outside of fuel tank. Inside was spotless- $25 USB borescope cameras are great! Cleaned bad sender with brake cleaner, now tested fine, reinstalled- I have no floor access hole like most.

They had funky designed shared fuel delivery system for engine and 10K Genset, so I started all over from the diptube and added separate drawtube for genset to isolate fuel lines as they were shared/spliced previously.

I relocated the fuel pump to the rear of the bus and installed a AirDog Raptor and reused the large separator/filter before the pump. Raptor has adjustable pressure and moving pump off hot engine will help it's life, not to mention better at pushing vs pulling fuel. Fuel gauge for dash on order w/ alarm.

New Lift Pump and lines/fittings was ~$500, peace of mind: priceless



All new fuel lines are 2 wire hydraulic line, which is 3000PSI for backhoes and such and all connections are JIC AN fittings. I didn't use any push-lock or hose clamps as those eventually fail/suck air. Needed to get a few specialty fittings from a auto race shop - metric straight 12x1.5 MM thread to -6 AN. Removed old line and slid new line into the many clamps and zip ties. Extended the electrical connection for fuel pump from engine to rear of bus and secured.



bumped the starter, waited 15 sec.....bump again, wait.... giver her a shot- boom ! she fired up ! Tighten injectors and Woot ! I have a bus now and not a giant immobile POS in the driveway. Aired-up, all systems-Go ! Engine sounds super strong (only 26k miles) and turbo whistles a nice song.

She purrs like a kitten- slipped the MD3060 in drive and took it for my first drive ! I never drove a bus this size before- is long. Drives real smooth, super quiet inside considering with a busted exhaust clamp it is running open-headers outside. Plenty peppy for me, but I only drove around the neighborhood. Got some looks- we don't see Bookmobiles out here much. I had my toolboxes inside and boy did they clatter on her maiden voyage.

I have more mechanicals to tend to before I buy my solar panels, OSB and rockwool Finish new genset fuel line, fluids/filters for that. Fix exhaust. Repair automatic step- as it is stuck in out position.

All-in-all, good a good day. Am more than tired of laying under that bus.
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Old 05-31-2017, 02:35 PM   #28
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super cool!!! peace of mind fixes are good!! something you kniw is now done right so you can just go!..

now you will want to just cruise it all over town!
-Christopher
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Old 06-09-2017, 12:12 AM   #29
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Here are some of the pics of the fuel tank rejuvenation project. It was the rustiest part of the whole bus and critical to be functioning properly.

Dirty rusty fuel tank, leaking, cracked lines- yuck.




Supposedly old fuel was oddly clear- had 60 gallons, pumped into other truck, burns fine. Interior of tank very clean, but bus has only had 50 tankfuls of fuel over it's boring life.




Primed and sender fixed. Ready for skoolie's best friend- Rust-Oleum.

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Old 06-09-2017, 09:05 AM   #30
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An access hole for the sender sure would be handy. Nice job and glad to hear it's purring.
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