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  1. #11
    Veteran Member SSdoxie's Avatar
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    Jun 2010
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    2,381
    Location
    Cumberland Plateau, TN
    Tractor
    Bobcat CT225

    Default Re: CT122 electrical gremlin

    Coroded or loose battery cable or connections can prevent the battery from taking a charge, but it is not unusual for a battery to "give up the ship" and fail suddenly like that either.
    Dennis

    CT225 w/7TL QA FEL, 60"tooth dirt bucket, 68" smooth bucket, Pallet Forks, Bale Spear. Hydrualic top llin, QH, 48 RC, 60" tiller, Angle blade, Landscape rake, Carry-all, Post hole auger.

  2. #12
    Bronze Member
    Join Date
    Feb 2011
    Posts
    50
    Location
    Western Kansas (way west)
    Tractor
    2009 Bobcat CT235

    Default Re: CT122 electrical gremlin

    Is your hydrostat pedal in the "neutral" position? If it is depressed or stuck down in either direction it will not let the starter engage. Been there done that!

  3. #13
    Silver Member jonnyc1999's Avatar
    Join Date
    Nov 2010
    Posts
    177
    Location
    King William, VA
    Tractor
    Bobcat CT122

    Default Re: CT122 electrical gremlin

    Hahahaha yeah I definitely checked that, as well as the PTO levers! Its hard to describe what is happening, but it's sort of like when you run a jumper wire over the battery, and it flickers and sparks. The dash flickers and hums like I'm rapidly flipping a light switch on and off while manually holding the wires together.

    Yesterday I couldn't work on it, but I cleaned the terminals with corrosion dissolving spray and a wire brush and I'll put the battery in and test the connections again today.

  4. #14
    Super Member MossflowerWoods's Avatar
    Join Date
    Aug 2011
    Posts
    5,978
    Location
    Ladysmith, VA
    Tractor
    Kioti DK50SE HST w/FEL, John Deere LX266 & STX38 Mowers. Stihl MS290 20" bar (For Sale), CS261, & FS190 + Echo CS400 & rusty old Ranger snowplow truck

    Default Re: CT122 electrical gremlin

    Jon,

    It sounds like it may be something like a loose connection or ??? behind the dashboard to me...

    I'm out of town all week or I'd offer to come over and help...

    David
    Former Submariner & Army SGT
    2011 Kioti DK50SE HST, KL-401 FEL w/72" bucket, tooth bar, & Ratchet Rake, 2 rear remotes, canopy, WR Long RBG72 Grapple, Woods BB72X cutter & TSG-50 stump grinder, TSC PHD, & more to come. Mowers 2003 JD LX266 42" deck mower, & old JD STX-38 (12.5 hp).

    Managing 51 Acres of Virginia hills with ponds & streams, Freshly Clear Cut!, riding trails, empty pasture, long gravel drive, veggie garden, & yard.

  5. #15
    Super Member MossflowerWoods's Avatar
    Join Date
    Aug 2011
    Posts
    5,978
    Location
    Ladysmith, VA
    Tractor
    Kioti DK50SE HST w/FEL, John Deere LX266 & STX38 Mowers. Stihl MS290 20" bar (For Sale), CS261, & FS190 + Echo CS400 & rusty old Ranger snowplow truck

    Default Re: CT122 electrical gremlin

    PS - In my experience, a relay fails either open or closed, NEVER intermittent. Always on or off.

    David
    Former Submariner & Army SGT
    2011 Kioti DK50SE HST, KL-401 FEL w/72" bucket, tooth bar, & Ratchet Rake, 2 rear remotes, canopy, WR Long RBG72 Grapple, Woods BB72X cutter & TSG-50 stump grinder, TSC PHD, & more to come. Mowers 2003 JD LX266 42" deck mower, & old JD STX-38 (12.5 hp).

    Managing 51 Acres of Virginia hills with ponds & streams, Freshly Clear Cut!, riding trails, empty pasture, long gravel drive, veggie garden, & yard.

  6. #16
    Silver Member jonnyc1999's Avatar
    Join Date
    Nov 2010
    Posts
    177
    Location
    King William, VA
    Tractor
    Bobcat CT122

    Default Re: CT122 electrical gremlin

    Ok, thanks for the heads up David! FWIW, I don't actually know what a relay on one of these tractors actually looks like, as my only experience with relays is adding one to my headlight circuit on my Willys Jeep. Every plug that I've been able to access appears to be solidly connected but I'll have to go through it tomorrow and double check everything. Like I said before, the ignition switch is new and didn't change the symptoms considerably. Apparently the Kioti ignition switches differ from the Bobcat ones at the pigtail, with a small section of wire that transitions them to the same connection end. I haven't been able to find this section yet since it's covered in wire loom. Did I mention I hate electrical issues???

  7. #17
    Veteran Member
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    wallace's Avatar
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    Feb 2004
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    2,952
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    PA.
    Tractor
    MAHINDRA

    Default Re: CT122 electrical gremlin

    Did you take the negative battery cable completely off the battery and the frame?
    If not do so, make sure you clean both sides of the cable and the frame with a wire brush.
    That has been the only issue I have ever seen in the Bobcat-The Kioti was a key switch.I never had to replace one on a Bobcat yet!
    One other thing I have seen happen to the Bobcats...The seat switch came unpluged. You may want to check that also.
    Wallace Tractor and Equipment
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    RICK WALLACE

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  8. #18
    Epic Contributor k0ua's Avatar
    Join Date
    Jun 2009
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    21,999
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: CT122 electrical gremlin

    Unfortunately I do not have the shop manual for you machine, Or I could be more specific, but in general the relays on your tractor are probably similar to mine, in that they are small square devices on the firewall of the tractor, they usually consist of a coil connection so that when current is passed thru the coil a magnetic field is generated that causes the armature, the moving part of the relay to move and make a set of high current connections. Think of the relay as high current switch that instead of being actuated by your hand is actuated by the flow of electrical current. The start relay would be one example of this and the glow plug relay another. But instead of focusing of relays, lets focus on the basics of what we know and don't know. From what you have told us, it would seem that the battery is adequate to operate the tractor, yet the starter does not spin, and as a side note the dashboard light do not seem to operate properly, and we hear some buzzing noises like a relay perhaps lacks sufficient current to pull the armature in and keep it energized. Since we seem to have eliminated the battery as a source of these voltage drops, the problem still sounds to me like high resistance in the primary cables or their connections. I am not sure how your tractor operates but in my tractor, when you turn the key on it goes thru a glow plug cycle, controlled by the glow plug timer circuitry and a large glow plug relay. This draws a large amount of current out of the battery to heat the glow plugs during the cycle, as long as the coolant temp is lower than 86 degrees. If for any reason there is a high resistance in this path the voltage to the rest of the tractor would drop tremendously due to the large amount of current potentially drawn by the glow plugs. Can you measure the voltage on the glow plug rail?, Can you measure the voltage on the lights? Do they even turn on, and if so are they dim? Do the flashers work? and are they dim? They should work with the key off.. Again, I don't have your schematic and I am sure it would be somewhat different than mine, but perhaps you could perform some of these tests and get back to us. I am still betting on high resistance wires or connections though..

    James K0UA
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


  9. #19
    Silver Member jonnyc1999's Avatar
    Join Date
    Nov 2010
    Posts
    177
    Location
    King William, VA
    Tractor
    Bobcat CT122

    Default Re: CT122 electrical gremlin

    Wallace, I took the negative cable off on both ends, and the frame side looked like bare metal. The negative battery side was secure, but I'm not confident that it was AS secure as it should have been (it seemed to shift slightly as I cranked the bolt loose). I haven't had a chance to put the battery back in yet and try again (I took the battery out to get load tested and charge it). I'll do that this afternoon after work.

    k0ua, Your description of relays is consistant with my limited experience of them, a.k.a little square boxes. When you switch the key to run, the glow plugs usually fire for 10 seconds, and then the light goes off and the tractor can be started. Can you give me a better handle on how I would check the voltage to the glow plug rail? I'm guessing red lead to the glow plug wire, black lead to a ground point? Honestly, my multimeter skills end at putting positive and negative leads to the battery terminals. I'll also check the lights when I get home and report back tonight. I'm praying it's just a primary cable problem, but I'm surprised that enough corrosion to affect operation would occur before I even hit the 100 hr/one year mark!

  10. #20
    Epic Contributor k0ua's Avatar
    Join Date
    Jun 2009
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    21,999
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: CT122 electrical gremlin

    Yes, red lead to the glow plug rail, black lead to a good solid clean ground. As for a cable failure, well there are always sulfuric acid fumes coming out of the battery, and they can attack metals pretty quick.. That is why I always use No-Ox-Id by Sanchem. on all my battery connections and clamps and the junction of the vinyl insulation on the cables as soon as I get a new vehicle. I have been doing this for about 25 or more years and have never had a corroded cable or connection. Before That I had my share of corrosion problems. I don't sell the stuff, and have no stock in the company, but I am a firm believer in its use.

    Sanchem NOOXID electrical grease & electrically conductive grease dielectric grease and contact lubricants

    James K0UA
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


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