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Old 11-05-2010, 06:20 PM
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How do I remove in-cab Gas Tank 69 C10?

I have some wrenching experience when it comes to older chevy's, but I have never removed an in-cab gas tank before.. I have all of the bolts out, and the passenger side of the tank is loose, but I dont know how to disconnect the filler hose on the driver's side Can anyone tell me how to go about this?

I am suppose to be leaving to go on tour tomorrow! Ive gone through everything else, except a carb rebuild, so I ran some seafoam through her and it must have freed up a leak--cab reeks of gas, and I found that it is coming out of the tank on the driver's side--some moisture/gas near the mounting bolt at the bottom grrrrr.

Also, on another note, i noticed a very small leak/seepage bubbling out right under where the distributor is mounted (6 cylinder 250c.i.)--is there a gasket there? Or could it be a crack ???

Please let me know if you have any answers on this, Id REALLY appreciate it. I need this good ol Chev to hold up on the road.. Ive replace the voltage regulator, battery, alternator, thermostat, belt, oil pan gasket, tires are good, new shocks, new filters, plugs, oil, etc, etc.. And these seem to be the only issues remaining..

Thanks in advance! Also, to listen to our music (good straight rock stuff go to (cant help myself, gotta promote

thanks again.


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Old 11-05-2010, 06:29 PM
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There is a good chance that you may have to lift the cab off the frame, but then again i have no experience doing this. Just a guess
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Old 11-05-2010, 07:08 PM
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gas tank removal

Im pretty sure I wont have to raise the cab.. the only issue I am having is disconnecting the filler hose, which is in plain sight.. ive just never done it before, but im sure a lot of guys on here have, so i want to find out the correct way so i dont damage anything.. thanks anyway tho.

has anyone ever done this before that can tell me the right way to disconnect the hose???

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Old 11-05-2010, 07:12 PM
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I used a '60's vintage behind the seat GM tank as an aux tank for another truck - my recollection is that the rubber connecting hose needed to be cut as it was just too dang tight to come off plus it was hidden. Once I cut the hose, the tank came right out. Replacement gas tank hose can be sourced from any GOOD auto parts supply house - and is quite pricey for the min. foot length you will need to buy.

What's the seepage? Oil? Water? There is a seal on the distributor housing that in 40 years may have given its' all. If it's only a little bit of oil, do a repair when you have the time.

Dave W
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Old 11-05-2010, 07:41 PM
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Unbolt every mount, disconnect every hose, (I removed the sending unit when empty) make sure the tank is on E after you drain it from the main line at the fuel pump, (I assume the seat has been removed), lift the tank up on the passenger side up and work it out of the gromment (you don't really need to cut it unless you plan to replace) then work it out at an angle. It's a tilt pull out the passenger side door kind of move. Four hands are better than two.
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