General Discussion     Tech Questions     Parts & Services     Suggestions/Ideas     Help & Website Instructions     Blogs    

Truck & Transportation History

Home Search Tags


Fuel pickup

Posted By MIKE WALLACE Thursday, February 17, 2011 2:37 AM
Add to Favorites2
Author Message
MIKE WALLACE
 Posted Thursday, February 17, 2011 2:37 AM
ATHS Member

ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)ATHS Member - (22,784 reputation)

Group: Forum User
Last Active: Wednesday, March 23, 2016 10:54 AM
Posts: 414, Visits: 1,475
Hookingup my tanks on the '75-KW W9: When I bought the truck it had been drawing from the bottom. There was a dip tube capped and return on the top. Why would he have hooked up the draw on the bottom?

The truck has a SC350, single fuel filter.

One tank will be draw /return and the other connected by the bottom fittings Any thoughts or tips?

Mike


 Mack? I ain't no Mack! I'm a Peterbilt for dang sake! Turn on your lights, ya moron! ...
peterj
 Posted Thursday, February 17, 2011 2:50 AM
ATHS Member

ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)ATHS Member - (213,161 reputation)

Group: ATHS Members
Last Active: Saturday, October 08, 2011 9:22 AM
Posts: 1,981, Visits: 11,109
Could be something wrong with the pickup tube.  sucking air, not going all the way to the bottom, etc.
Bottom draw was the way most trucks were back then. My 92  pete 379, had bottom draw tanks, like the older 359.  
Geoff Weeks
 Posted Thursday, February 17, 2011 4:05 AM
ATHS Member

ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)

Group: Forum User
Last Active: Saturday, November 27, 2021 2:54 AM
Posts: 3,750, Visits: 16,966
Cummins draw and return a lot more fuel then Cat, possably the pick-up tube is too small? My Cummins are hooked up to bottom draw, but the tank doesn't have a draw-pipe on the top.
Dieseldoug
 Posted Thursday, February 17, 2011 1:49 PM
ATHS Member

ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)ATHS Member - (44,623 reputation)

Group: Forum User
Last Active: Friday, September 04, 2015 12:09 PM
Posts: 433, Visits: 4,367
Mike , this was pretty much a normal practice in that era. My Acar and millions of others pulled from one tank and returned to the other, and used a crossover line. Most suction lines would be 10 or 12 Aeroquip with an 8 crossover, with or witout shutoff valves at the tank face.

This flow pattern was used to circulate the fuel through both tanks to accomplish two things. First was to either warm or cool the fuel evenly in both extremes of weather. The second was to balance the fuel weight and also prevent starvation if you were low on fuel and at an extreme operating angle.

Enviromental concerns brought this set up to an end. The crossover line was the Achilles heel of the system. Many were ripped off by road alligators and other road debris, with the resulting fuel spill.  In most cases at the time, the drawtube system wasn't too robust and I was one of many sitting on the side of the highway because of a broke off tube due to liguid surge in the tanks. They were for the most part entirely different than what we use today. 

One mans' opinion, hope this adds to your knowledge base. 


Doug "dieseldoug" Rodgers

"You'll go far with Autocar"
Eddy Lucast
 Posted Friday, February 18, 2011 12:54 AM
.

. - (427,704 reputation). - (427,704 reputation). - (427,704 reputation). - (427,704 reputation). - (427,704 reputation). - (427,704 reputation). - (427,704 reputation). - (427,704 reputation). - (427,704 reputation)

Group: Forum User
Last Active: Wednesday, July 27, 2016 6:19 AM
Posts: 11,860, Visits: 14,141
In 1979 my White Road Commander had the fuel supply and return line plumbed into the same tank. The advantage was that when you started to worry about fuel gelling you could shut the cross over adding the fuel warmed by the return line to the tank you were drawing fuel from. 



Eddy Lucast

http://kbs.justoldtrucks.com


man with wooden truck should be wary of "truck whisperer" with torch
wayne graham
 Posted Friday, February 18, 2011 6:56 AM
ATHS Member

ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)

Group: Forum User
Last Active: Monday, September 28, 2015 3:43 PM
Posts: 2,467, Visits: 3,827
Mike, I have owned a bunch of KW-s from the 70s and still have an A model. personally I would let it draw from the bottom. the pick-up tube assy for them is not very good and coupled with the extremely rough ride of 8-bag they dont have much of a chance. had 2 with reyco and they seemed to be fine. If you draw from bottom it is nice and simple which works well around here. hope this helps Wayne
Geoff Weeks
 Posted Friday, February 18, 2011 7:14 AM
ATHS Member

ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)ATHS Member - (513,906 reputation)

Group: Forum User
Last Active: Saturday, November 27, 2021 2:54 AM
Posts: 3,750, Visits: 16,966
I have to say I've never seen a factory set-up that would draw off one tank and return to another. I did it once on a truck that had one fuel tank removed for repair, when it was put back on, the return was left on the passenger side tank. The Cummins engine returned so much fuel, under pressure that when the tanks were at or near full, it would "overfill" the passenger tank and leak out the vent. Gravity just couldn't keep up with the Cummins pump.
wayne graham
 Posted Friday, February 18, 2011 8:12 AM
ATHS Member

ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)ATHS Member - (280,484 reputation)

Group: Forum User
Last Active: Monday, September 28, 2015 3:43 PM
Posts: 2,467, Visits: 3,827
Geoff, In 81 we bought 2 new 9670 IH and they of course had draw and return on same tank. I let driver convince me we could keep both tanks warm if we drew from one and returned to other. I had same experience you did but I thought it was just me. Wayne
chocko
 Posted Friday, February 18, 2011 11:28 AM
ATHS Member

ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)ATHS Member - (108,418 reputation)

Group: Forum User
Last Active: Thursday, June 06, 2019 3:08 PM
Posts: 1,133, Visits: 2,853
i have a 1985 Freightliner COE with 2 tanks. It draws from bottom and returns to same tank. It is a 6V-92. I only use truck to play with. Joe D.

"Spoke wheels rule."
glenn akers
 Posted Friday, February 18, 2011 1:04 PM
.

. - (380,339 reputation). - (380,339 reputation). - (380,339 reputation). - (380,339 reputation). - (380,339 reputation). - (380,339 reputation). - (380,339 reputation). - (380,339 reputation). - (380,339 reputation)

Group: Forum User
Last Active: Thursday, December 02, 2021 6:35 AM
Posts: 3,682, Visits: 14,546
Geoff Weeks (2/18/2011)
I have to say I've never seen a factory set-up that would draw off one tank and return to another. I did it once on a truck that had one fuel tank removed for repair, when it was put back on, the return was left on the passenger side tank. The Cummins engine returned so much fuel, under pressure that when the tanks were at or near full, it would "overfill" the passenger tank and leak out the vent. Gravity just couldn't keep up with the Cummins pump.
        It needed a tee in the cross over for the pick up to the pump.Freightliner did this for years with the return to the right side tank.


glenn akers

Similar Topics

Expand / Collapse

Reading This Topic

Expand / Collapse

Back To Top