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Thread: what to disconect before welding on m1083

  1. #1
    Join Date
    Dec 2018
    greenbriar tn
    Thanked 6 Times in 4 Posts

    Default what to disconect before welding on m1083

    im fixing to get started on a camper build and im not sure what to disconect before weeks of welding on this truck i dont want to burn/ smoke check any electrial components. Any ideas on this

  2. #2
    4 Star General Keith_J's Avatar
    Join Date
    Aug 2009
    Schertz TX
    Thanked 773 Times in 542 Posts


    Disconnect ALL battery leads and make sure the positive leads are not touching ground. Then disconnect the alternator.

    The main thing to remember is ground loop induced current. Which means connect the welder as close as possible to the welding site. Process also matters, SMAW (stick) is the least problematic. FCAW/GMAW are next. Worst is GTAW with HF non-contact start. This process can induce radio frequency through the leads without contact. I've fried electronics without contact, they were just in the loop of the welder lead!
    1986 M1031 SECM.
    1985 MEP 002A
    1974 MEP 026C, eventually converting to electric start.

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