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  1. #11
    Platinum Member
    Join Date
    Aug 2013
    Kingsville MO
    John Deere 650, Ford 8n, John Deere Model 70 Kubota BX25D

    Default Re: Slow crank on J.D. 450E dozer

    One bad battery and one good battery....the bad one will just kill you. Test each battery on its own. Could be you have just one that has given up the ghost. M1009's are the same kind of deal....or I guess I should say where.

    Same goes with cables everywhere....if one is iffy you have the same kind of issues.

    Personally I would charge the batteries one at a time, or if you have two chargers that is better. I could charge them with nothing connected to them if possible.

    If all that is ok, you are to what you talked about, cleaning grounds and connections, then checking the starter and such. Last ditch would be a direct feed to the starter with a remote switch that would take as much out of the question as possible.

  2. #12
    Bronze Member
    Join Date
    Jul 2014
    NE Ohio
    John Deere F935

    Default Re: Slow crank on J.D. 450E dozer

    As others said, you can charge one battery which will charge both because they are wired in parallel. I would advise charging each individually while they are not installed, so you can compare how long it took to charge each fully. Also, make sure they are both the same brand, age and type/capacity.

    If each battery is okay, you should get an inductive clamp and a high quality DVOM to do more tests. If you don't know what either of those two things are, then it means it's time for you to take it to a mechanic. If you know what those are, you'll need them to do quick voltage drop tests to find what is using up all the volts from the batteries.

    Once the batteries are known to be good, check the other simple things like oil level & quality, as well as air filter condition. Always start simple. If those are okay, then like Cherokee said it's time to start digging into checking the voltage drop of the starting system wiring to help find the problem. You could also take the belts off the engine and see if that makes a difference...just another simple/quick check.
    Last edited by Topher265; 07-25-2014 at 10:45 AM.

  3. #13
    Veteran Member
    Join Date
    Mar 2007
    British Columbia, Canada
    1959 MF-65 sold, 2007 Jinma 554 diesel.

    Default Re: Slow crank on J.D. 450E dozer

    I don't think the problems are the batteries. I have used only one battery on my JD450 for 9 years and my machine starts easily with no problems - and I live in the cold north. The problem lies in your starter - probably worn or stuck brushes. If there is not enough pressure from the brushes onto the commutator then the starter will not function properly. My suspicion is the brushes are the culprit.
    2007 Jinma 554 tractor, FEL, 8ft Rear Blade, 73" Snowblower, 2002 3500 Dodge Ram 4x4, 1986 F250 4x4 SC 6.9 turboed diesel.

  4. #14
    Platinum Member DieselMonk's Avatar
    Join Date
    Dec 2004
    Nova Scotia
    New Holland / T4.75 Powerstar & Boomer 1030, Case 580 SM II, Mahindra 1526

    Default Re: Slow crank on J.D. 450E dozer

    I've also got an old dozer that used to need 2 batteries to start and now it only uses one and starts with ease. Matter effect putting a second battery there now, doesn't make any difference anymore. But before I got to that stage I had to replace the battery cables and clamps. The old cables were so bad, they didn't carry any heavy current anymore from the battery to the starter. I didn't do anything to the starter itself.

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