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Starter problem.

Discussion in 'Kenworth Forum' started by Rayl, Mar 30, 2018.

  1. Mar 30, 2018 #1
    Rayl

    Rayl Bobtail Member

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    Dec 30, 2017
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    Truck in my profile has a 3406a cat. Three new 12v batteries. Have voltage drop tested it and have less than a volt drop Truck was converted to 12 volt previously but looks to have the original starter. Truck is a very poor cranker. Warm or cold Would the original starter work on 12 ?
     
    Rayl, Mar 30, 2018
    Rayl, Mar 30, 2018
    #1
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  3. Mar 30, 2018 #2
    uncleal13

    uncleal13 Road Train Member

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    Horribly slow if at all, plus the starter itself would tend to over heat without enough voltage if it was a 24 volt one.
    I have seen a few older trucks that were 24 volt start / 12 volt run.
    Uses a system of relays to swap battery positions to give 24 volts to the starter.
     
    uncleal13, Mar 30, 2018
    uncleal13, Mar 30, 2018
    #2
  4. Mar 30, 2018 #3
    swaan

    swaan Road Train Member

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    BC canada
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    The truck had a A model cat that you think has the original starter and it cranks slow.!?

    Put a new starter in it. Could be a 24 v starter with only 12v going to it..
    Either way it's probley 35 years old if original.

    Get a 39mt delco.
     
    swaan, Mar 30, 2018
    swaan, Mar 30, 2018
    #3
    SAR Thanks this.
  5. Mar 30, 2018 #4
    Rayl

    Rayl Bobtail Member

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    Dec 30, 2017
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    All the batteries are connected in a way to have 12 volt total
    i guess I should rephrase. Have shop paper work when it was converted and it does not mention a starter. It does mention a solenoid and relay
     
    Rayl, Mar 30, 2018
    Rayl, Mar 30, 2018
    #4
  7. Mar 30, 2018 #5
    swaan

    swaan Road Train Member

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    Well it's a no brainer.

    Put a new starter in it.
     
    swaan, Mar 30, 2018
    swaan, Mar 30, 2018
    #5
    boneebone Thanks this.
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