mick the builder

Well-Known Member

• Sep 24, 2011

• #1

Morning all, as the title suggests, apart from battery, is there a need to disconnect anything else before sorting out the holes in my chasis?

 

mundungus

Active Member

• Sep 24, 2011

• #2

I only ever disconnected the battery.

 

Oldseadog

Well-Known Member

• Sep 24, 2011

• #3

:5biagree:
Just the battery to disconnect.

OSD

 

mystery

Well-Known Member

• Sep 24, 2011

• #4

just as a precaution check the chassis you are about to weld doesn't have the wiring loom passing through and I would disconnect both battery leads ,bad earth clamp connection on the welder could causes excessive current to travel through wiring earth's melting the loom

 

A

andy mcd

Active Member

• Sep 24, 2011

• #5

We use to disconnect the alternators, a few time the diodes have fffed up.
Now i dont disconnect anything i use the battery surge protectors that way every thing is protected and you dont have to find the code for the radios.

I am sure draper do one for about £20

 

tombardier

Well-Known Member

• Sep 24, 2011

• #6

I disconnect the alternator, as I think it hooks up to the same earth as the battery, so just disconnecting the battery doesn't disconnect the alternator from the chassis!

 

mick the builder

Well-Known Member

• Sep 24, 2011

• #7

Thanks for all the suggestions, I think I will also dissconect the Alt. I wondered what putting an earth on the chassis would do to my loom? As for the radio codes, thats only fitted for show, cant hear the fooking thing when i'm driving

 

Dr_evil

Banned

• Sep 24, 2011

• #8

Only need to do the battery, my series has a plate in it saying before arc welding disconnect battery, no other warnings or welding advice

 

tombardier

Well-Known Member

• Sep 24, 2011

• #9

 

mick the builder

Well-Known Member

• Sep 24, 2011

• #10

I think that says it all! As I will be mig welding, I can either go gassless with a neg earth, or with gas with a positive earth. Does this change things?

 

tombardier

Well-Known Member

• Sep 24, 2011

• #11

It shouldn't matter either way

 

L

lynall

Well-Known Member

Full Member

• Sep 25, 2011

• #12

I dont disconnect anything the only thing i always make sure i do is keep the earth lead as close as possible to the part being welded.
This is on cars and new trucks never any issues.



Lynall

 

tombardier

Well-Known Member

• Sep 25, 2011

• #13

the question i have to ask is: would you do that if you were working on someone elses vehicle?

 

Fur Trapper

Banned

• Sep 25, 2011

• #14

tombardier said:

the question i have to ask is: would you do that if you were working on someone elses vehicle?

Click to expand...

If in doubt disconnect, it's only 1 bolt

 

L

lynall

Well-Known Member

Full Member

• Sep 25, 2011

• #15

tombardier said:

the question i have to ask is: would you do that if you were working on someone elses vehicle?

Click to expand...

Exactly the same



Lynall

 

tombardier

Well-Known Member

• Sep 25, 2011

• #16

I think that when you've got an arc going, the current is going to go pretty directly to the earth, but when you're initiating the arc, you get explosions of current reaching much further in all directions and it's those surges that cause the damage. I certainly won't be risking it!

 

Fur Trapper

Banned

• Sep 25, 2011

• #17

tombardier said:

I think that when you've got an arc going, the current is going to go pretty directly to the earth, but when you're initiating the arc, you get explosions of current reaching much further in all directions and it's those surges that cause the damage. I certainly won't be risking it!

Click to expand...

So very right

 

Oldseadog

Well-Known Member

• Sep 26, 2011

• #18

After having experienced an exploding battery many years ago ... it made quite a nasty acidic mess, which was blasted around the garage! Fortunately, I was behind the bulkhead at the time, otherwise I could have had a very quick acid bath!

Now I always remove both battery leads.

Be safe!

OSD