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water leak repair without major surgery

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Tony Martyr06/11/2011 09:57:23
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226 forum posts
45 photos
I have discovered a small water leak from 'somewhere' in the bunker tank of my loco. This is after final painting and assembly so I really really don't want to strip the whole assembly apart and have to a re-solder (even if I could locate the exact source) and re-paint.
The problem is that this tank is totally enclosed and the only penetrations are the two stub pipes leading to the side-tanks and the breather tube running up through the coal bunker.
It occurs to me that a concentrated dose of Halfords Radiator repair fluid might be the answer but I'm not sure if that needs to be heated to work - I could circulate hot water I suppose.
Any bright ideas - I can't be the only one in the 'first loco' build community to make this error?
Tony
JasonB06/11/2011 10:24:11
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25215 forum posts
3105 photos
1 articles
Maybe one of the petrol tank sealing liquids would be more permanant than rad sealant. Pour it in, swill about and then leave the excass to drain, may need a funnel if the pipes are small.
 
"Petseal" is one brand that springs to mind
ady06/11/2011 11:31:48
612 forum posts
50 photos
From one who used both eggs....and rad sealant in his old escort around about 1982.
 
The trade off with rad sealant is a loss of heat transference.
I used a couple of bottles and the car started overheating in traffic jams.
 
So bear that in mind because it coats the entire system, and can result in quite a large loss of efficiency.
Gordon W06/11/2011 12:05:08
2011 forum posts
Rad sealent does need heating to work, at least the sort I've used. Would recomend tank sealent as used by M/C restorers.
Tony Martyr06/11/2011 16:55:16
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226 forum posts
45 photos
Thanks Gordon - I found a possible source of a two-pot coating liquid for saving old petrol tanks by search M/C restoration sites. I have emailed for advice on my application and will advise on the success or otherwise.
Tony
Tony Martyr08/11/2011 12:02:15
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226 forum posts
45 photos
I have ordered a kit of 'SureSeal' from Tank Care Products and will advise on the results

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