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Disconnecting Battery

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by RaisedK5, Jul 11, 2001.

  1. RaisedK5

    RaisedK5 1/2 ton status

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    Ok , i was working on my truck the other day, leaning over the battery, and realized that every repair instruction starts with the same sentence, "First Disconnect the battery". Now, i never do this, and i was wondering how many of you guys acctually disconnect the battery when working on your truck?

    RaisedK5

    "Of all the things I've lost, I think I miss my mind the most!"
     
  2. ChrisM72beast

    ChrisM72beast 1/2 ton status

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  3. Emmettology 101

    Emmettology 101 3/4 ton status

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    Nope! I am a lazy a$$ and dont. Even changing a starter..

    <font color=green>MIKE</font color=green> - "Hukd on fawnics,werkd fer me!"
    <A target="_blank" HREF=http://www.geocities.com/emmettology101>http://www.geocities.com/emmettology101</A>
     
  4. newyorkin

    newyorkin 1 ton status

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    I'm pretty lazy too (sick of re-programming 18 radio preset buttons and CD names). I really only disconnect it when doing something majorly electric, like starter, alternator, need to clear ECM codes, or major component swap, like engine or tranny.

    Probably should do it more often... I actually still have some spark-burnt tools from bumping a hot terminal somewhere while working on something unrelated and grounded... I think it was the hot lead out of the alt while changing the thermostat on my dodge. Nice big fireworks show a foot away from the carb...

    The big killer thing is the amperage, voltage is right about near a 9-volt battery.


    Ratch
    <A target="_blank" HREF=http://k5.8m.com>http://k5.8m.com</A>
    **K5 - What more is there to life?**<P ID="edit"><FONT SIZE=-1>Edited by newyorkin on 07/11/01 03:37 PM (server time).</FONT></P>
     
  5. HarryH3

    HarryH3 1 ton status Author

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    I worked with a guy many years ago that showed up to work one day with his wrist all bandaged up. Found out that he had managed to touch the locking steel band on his Seiko watch between the battery post and the fender. The result was that it literally welded the watch band between the two. While it was stuck in place, the battery was dumping major current through the band, making it get <font color=red>HOT</font color=red>! He was finally able to yank free, but got burned pretty badly before he was finally able to get the watch off of his arm. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://www.angelfire.com/super/ThunderTruck>http://www.angelfire.com/super/ThunderTruck</A>
    It's a great day to be alive...
     
  6. BlazerGuy

    BlazerGuy 3/4 ton status

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    I most always disconnect it when I'm working under the hood, but I don't have any radio stuff to reset either [​IMG]

    Murphy's Laws on Life:
    "A bird in the hand is worth three Kleenex."
     
  7. Boss

    Boss 1/2 ton status Author

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    I never do, UNLESS when I work with electrical stuff. I guess if you're super careful, you'll be ok, but you NEVER KNOW.
    I'm super lazy too, but I always disconnect them now, b/c one time (back in the day) I was removing the alternator and did not disconnect the battery, well, I was being "super careful" but dropped it on the frame (it was still connected) and then I noticed some wires started smoking!![​IMG] I immediately picked it up and had to hunt the wire down and replace it. Scary.
    Boss

    89' 1 TON of FUN K5
     
  8. '73 K5

    '73 K5 1/2 ton status

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    It depends what you are doing. I'd say if you are doing the alternator or starter, then disconnect it, but otherwise you'd probably be OK.

    '73 K5
    Chevy good...Ford bad
     
  9. Pugsley

    Pugsley 1/2 ton status

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    I always do, ever since I was changing a circuit breaker on a fire engine and shorted my wedding ring to ground - it got hot enough that it melted the solder joint on the ring. Thanks to my omission, the department now has an SOP requiring that the battery be disconnected before so much as changing a fuse.

    <font color=red>Cripplefight!!</font color=red>
    <A target="_blank" HREF=http://pugsley.alloffroad.com>http://pugsley.alloffroad.com</A> Updated finally[​IMG]
     
  10. MaxCrack

    MaxCrack 1/2 ton status

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    I have a quick release on the ground wire to the battery, and I only listen to 3 or 4 stations. But I still do not disconneect it unless I'm doing work on the electrics.

    That's because I'm the devil.
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I never do, unless working on a major electrical component.

    Once, while removing my carb, I dropped the old carb on the top of the battery. I have one of those batteries that works with both top and side posts...and it bursted into flames. By the time the fire was out, only a small ground wire was damaged, but my hand was badly burned. It was no fun at all. I had reached into the engine compartment to pull the carb out, then I threw it on the floor. Had I not done this, I think it would have gone for the main fuel line, because it was only a few inches away.

    SCARY, to say the least. I proceded to install the carb afterwards.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     

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