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Black water tank removal for repair? 1975 270

Unread postby diskman on Sun Feb 21, 2016 10:25 pm

Working on the old girl a bit this winter to get a head-start in summer camping. My black water tank has several cracks that previous owners have JBwelded and such. I would like to pull the tank if possible to use some of the kits and plastic mending kits out there.

Is it possible to remove the tank or is it glued to shower drain, sink drains and toilet??

Removal would probably result in a much better repair. But, I can make due with it in the vehicle also. Will NOT be ideal, but whatevs.
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Re: Black water tank removal for repair? 1975 270

Unread postby KB2CRK on Mon Feb 22, 2016 10:55 am

Did it just over a year ago. Toilet drain screws in top rest of piping is glued in. Fernco couplings are your friend. Pictures are also in the other thread.
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Re: Black water tank removal for repair? 1975 270

Unread postby KB2CRK on Mon Feb 22, 2016 11:04 am

Oops, wrong link.
Here is the right one viewtopic.php?f=25&t=463
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Re: Black water tank removal for repair? 1975 270

Unread postby Acesneights on Tue Feb 23, 2016 6:00 pm

Dropping the holding tank isn't too bad. The only pipe you have to cut is the one coming over from the sinks IIRC. Make a straight cut and you can put it back together with a Fernco. The closet flange from the toilet has screws holding it o the floor. Once you remove them the whole thing should unscrew from the hold tank. The shower I think you can under the trap and then the wires for the gauge and the two straps.
1975 Travco 270
1974 Travco 220 Parts unit
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Re: Black water tank removal for repair? 1975 270

Unread postby diskman on Mon May 02, 2016 4:22 pm

Pictures!

Messing with the 270 yesterday for a bit. Decided to investigate the leaking holding tank. I knew it was patch previously but never really took a look at it. Yep. Giant 12 inch Bondo patch. Grabbed a large putty knife and most of the Bondo popped right off.

Revealing several cracks. yay...

I ordered the large (1QT) Plasti-Mend this morning. Hoping I can use a flap-disk on my grinder to carefully remove whats left of the Bondo and clean the areas up...

Looks like there are about 4 areas of cracks. ugh. I think I will add some steel stock across the straps to add support to the middle of the tank when I fix the cracks.

Wish me luck! Will be next weekends project.

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Re: Black water tank removal for repair? 1975 270

Unread postby Acesneights on Wed Jun 29, 2016 8:31 pm

Well, the plastimend I used cracked and cracked badly. Stuff is crap.
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1974 Travco 220 Parts unit
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