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Before doing all that, just replace the gasket. That was my problem
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Sorry did not fully understand what you are saying, if it only happens when it is full them TOBASH is probably right, I just don't fill the Detroit all the way up cuz I am lazy, I think that is supposed to be standard procedure anyway.Sorry to dredge this up.
I have a leak, might be the gasket might be the fill tube. It definitely happens when the tank is more full than less full. My truck is very old, has to be 80's because it has the old mirror mounts. I have the old parking brake (disc on drive shaft).
What's the latest on replacement fuel tanks for the older trucks? Can they be had? Do the new tanks fit if you retrofit with the parking brake upgrade?
Thanks.
On that note, I do not have the fuel tank access mod. I have seen it posted somewhere. Is it in the TM section?Before doing all that, just replace the gasket. That was my problem
.On that note, I do not have the fuel tank access mod. I have seen it posted somewhere. Is it in the TM section?
Would I be able to fit a wet towel on top of the fuel tank while I cut out the access panel with a angle grinder/cutter as an ignition safety measure?
Oh, the access panel doesn't give enough access to replace that top panel on the tank itself? That's a bummer. I guess it's just for replacing the fuel sending unit. Well, before I cut or drop anything, I want to crawl in there and find the definitive source of the leak. I may be just over filling the tank.The access panel will not give you enough "access" to repair the leak unless by a very remote chance it is the fuel sending unit so you may as well drop the tank.
I bet you know what a "fuel polisher" is!When we need more access to a diesel fuel tank for cleaning, we use a 4" hole saw and install a 6" access plate made by Seabuilt. We have installed them on both water and diesel fuel tanks. You notice I didn't saw gasoline......
I may have 80-100k invested in such.I bet you know what a "fuel polisher" is!
Well, the drive shaft has to come out to remove the fuel tank, make sure to remove all inboard straps, especially the short one bolted onto the cross beam, drop the rear of the tank down and slide it backwards, you may need to rotate the yoke on the differential.Ok, I have the TM and I've disconnected everything the manual calls for but this tank won't quite come out.
We're talking the old style fuel tank. I've removed the driveshaft to make life easier even though the TM didn't say to do it.
Which end typically releases first, the front or the rear?
I've removed the short rubber section that connects the fuel fill pipe to the tank. I've disconnected the breather hoses. It's very, very close but I'm not maneuvering it quite right. What's the trick?
Also, I've confirmed that my fuel leak is from chafed fuel lines that run from the top of the tank to the metal lines that run to the engine. It's an easy fix if I can just get at least one end of the tank to drop.
Advice appreciated!
Ok, so the rear of the fuel tank should drop down. It's hung up on something or I'm just being too gentle with it. It was hung up on the short rubber hose that the fuel fill pipe connected to but I removed that and it's noticeably more free but still won't quite drop down. I know the tank will slip out if I can just get the rear end of the tank down.Well, the drive shaft has to come out to remove the fuel tank, make sure to remove all inboard straps, especially the short one bolted onto the cross beam, drop the rear of the tank down and slide it backwards, you may need to rotate the yoke on the differential.
The fuel tank vent is connected at the top of the tan, as well as the sender harness, so it’s a must to have the fuel sender access panal installed so these can be disconnected prior to removal
HeatOk, I got the fuel tank free. The fuel fill stub was just hung up on the frame. A gentle twist and it dropped down.
I was right- Somehow the metal fuel line sections got pinched between the front fuel tank strap and the transfer case. Years of jostling and chafing ate a 2-3mm hole in the metal fuel line. It is stunning that the engine ran, rarely stumbled and has only stalled on me once. The truck never stranded me.
In the photo above in my previous post, what is the plastic line attached to the white nipple, running to the front of the truck? How can I disconnect it?
Thanks.