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Author When Welding on a car?
3CorsaMeal
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Registered: 11th Apr 02
User status: Offline
16th Aug 10 at 17:54   View User's Profile U2U Member Reply With Quote
what do you need to do?

just disconnect the battery? is there anything to do with ABS that needs removing?
djgritt
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Registered: 1st Nov 07
Location: Dorset Drives: Focus ST / Hyundai i20N
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16th Aug 10 at 17:58   View Garage View User's Profile U2U Member Reply With Quote
I've always just disconnected the Battery Earth/Negative
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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16th Aug 10 at 17:59   View User's Profile U2U Member Reply With Quote
remove anything flamible near by (on both sides)

have an extinguisher near by

Just disconnect the battery.
Edd
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Registered: 8th Nov 04
Location: Glasgow
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16th Aug 10 at 18:00   View User's Profile U2U Member Reply With Quote
disconnect battery

make sure you dont have a fuel leak lol
3CorsaMeal
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Registered: 11th Apr 02
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16th Aug 10 at 21:27   View User's Profile U2U Member Reply With Quote
its the wheel arch where the fuel tank/filler cap is?

does that matter?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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16th Aug 10 at 21:37   View User's Profile U2U Member Reply With Quote
i'd possibly remove the tank and filler tube - dont want to go boom
alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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16th Aug 10 at 23:18   View User's Profile U2U Member Reply With Quote
No need to remove the tank unless you're welding right next to it or directly above it. Just watch that you're not going to melt anything, be sensible and look twice weld once. From the fuel filler cap to the tank is a sealed unit, unless you have any leaks I can't see it going on fire.

[Edited on 16-08-2010 by alan-g-w]
Tomnova16
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Registered: 21st Jan 06
Location: Gerrards Cross Drives: Porsche 911
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16th Aug 10 at 23:21   View Garage View User's Profile U2U Member Reply With Quote
Put a welding blanket or piece of metal in the way so weld splatter/sparks can't hit vulnerable areas.

http://www.lemass.co.uk/ for all your automotive/bodyshop needs
Located in Chalfont st Peter
Mertin
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Registered: 12th Oct 05
Location: Scotland
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17th Aug 10 at 14:02   View User's Profile U2U Member Reply With Quote
Or if you do remove the fuel tank, dont leave it lying near by where sparks can get to it
Cossie
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Registered: 17th May 02
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17th Aug 10 at 15:27   View User's Profile U2U Member Reply With Quote
new theory is that to leave battery connected to protect ecu from spikes and there is a spike protector connected to battery
Tomnova16
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Registered: 21st Jan 06
Location: Gerrards Cross Drives: Porsche 911
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17th Aug 10 at 15:31   View Garage View User's Profile U2U Member Reply With Quote
i have a spike protector so dont disconnect the battery, but if your doing it at home as a one off then there is no point buying one so just disconnect the battery

http://www.lemass.co.uk/ for all your automotive/bodyshop needs
Located in Chalfont st Peter
22B
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Registered: 9th Sep 04
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17th Aug 10 at 17:28   View User's Profile U2U Member Reply With Quote
If you dont have a surge protector disconnect the battery as mentioned above. Depending on where your welding on the car, remove any trim, carpet etc... if its directly above, it doesnt take much for a car to go up in flames when welding, so keep an eye out.

Also make sure all the metal surfaces are clean and shiny, and always tack weld yyour new piece of metal to be welded before you think about seaming.

 
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