Question: Fuel tank removal in 70 GMC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

'70GMCStep · 07-13-2007, 12:47 AM

I am a new member and it is nice to be a part of this.

I was wondering if anyone could give me some advice on how to properly remove the fuel tank on my '70. I am thinking that it has some debris that needs to be removed. I have removed all of the bolts attaching it to the cab, but do not know how to remove it from the neck leading to the cap. It is one of those things that I can see myself screwing up if I don't ask. Am I missing something?
Any advice would be much appreciated.

Thanks!

'70GMCStep

JimKshortstep4x4 · 07-13-2007, 05:11 AM

Welcome to the board from West Michigan!

I use a soap solution to lube the neck seal and then carefully push the seal down into the space between the neck and hole. If the seal is no good any way then you don't have to be careful of it.

When lubing the seal, I pull it away from the cab as it can be stuck.

Once the seal is free of the hole, the tank can be easily removed since you have bolts and lines removed.

When installing the tank, I put the seal in place, lube the neck and seal and then push the neck through the seal. (The neck will go through the seal when installing but when removing the tank the neck will catch because of the way it is made).

Good luck!

Jim

68gmsee · 07-13-2007, 08:52 AM

Howdy, another new member here...

I just had to do the same on my 68GMC. The rubber seal was old and hard and I didn't want to reuse it so I cut it off with a sharp knife. It was easy to remove the tank after that.

I ordered another seal from the vendors. They're inexpensive and arrived in a few days-plus it was a lot more pliable than my old one...

bobthecop · 07-13-2007, 09:54 AM

Sounds like a good time to relocate the fuel tank to the rear....

07-13-2007, 12:47 AM	#1
'70GMCStep Registered User Join Date: Jul 2007 Location: Rogersville, Missouri Posts: 89	Question: Fuel tank removal in 70 GMC I am a new member and it is nice to be a part of this. I was wondering if anyone could give me some advice on how to properly remove the fuel tank on my '70. I am thinking that it has some debris that needs to be removed. I have removed all of the bolts attaching it to the cab, but do not know how to remove it from the neck leading to the cap. It is one of those things that I can see myself screwing up if I don't ask. Am I missing something? Any advice would be much appreciated. Thanks! '70GMCStep Last edited by '70GMCStep; 07-13-2007 at 12:50 AM.

07-13-2007, 05:11 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Question: Fuel tank removal in 70 GMC Welcome to the board from West Michigan! I use a soap solution to lube the neck seal and then carefully push the seal down into the space between the neck and hole. If the seal is no good any way then you don't have to be careful of it. When lubing the seal, I pull it away from the cab as it can be stuck. Once the seal is free of the hole, the tank can be easily removed since you have bolts and lines removed. When installing the tank, I put the seal in place, lube the neck and seal and then push the neck through the seal. (The neck will go through the seal when installing but when removing the tank the neck will catch because of the way it is made). Good luck! Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

07-13-2007, 08:52 AM	#3
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Question: Fuel tank removal in 70 GMC Howdy, another new member here... I just had to do the same on my 68GMC. The rubber seal was old and hard and I didn't want to reuse it so I cut it off with a sharp knife. It was easy to remove the tank after that. I ordered another seal from the vendors. They're inexpensive and arrived in a few days-plus it was a lot more pliable than my old one...

07-13-2007, 09:54 AM	#4
bobthecop Senior Member Join Date: Nov 2006 Location: Yukon Oklahoma Posts: 2,647	Re: Question: Fuel tank removal in 70 GMC Sounds like a good time to relocate the fuel tank to the rear.... __________________ Happiness is towing your "new" truck home. 1972 C-10 1982 GMC (parts truck??) 1969 c10 parts truck 1969 C-10 ( my sons) 1992 Silverado 4X4 (now the boys truck)(now mine again) 2002 Tarus (my wife loves that car)



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