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  1. #1
    Bronze Member
    Join Date
    Aug 2010
    Posts
    53
    Location
    Whitesburg, KY
    Tractor
    2010 Bobcat CT335ss

    Default Tach/Electrical Issue

    The Tach and Hourmeter is not working all the time. 2010 Ct 335 sst.

    Several times today I started the tractor and noticed no tach or hour meter readings, however after a few minutes of operation, both always started working again.

    Any ideas as to what to look for?

  2. #2
    Elite Member
    Join Date
    Nov 2009
    Posts
    3,444
    Location
    USA
    Tractor
    Bobcat

    Default Re: Tach/Electrical Issue

    check out your wiring harness, sounds like a loose connection, or connector plug, possibly a loose ground

  3. #3
    Veteran Member milkman636's Avatar
    Join Date
    Aug 2010
    Posts
    1,163
    Location
    Palm of the Right Hand
    Tractor
    Bobcat CT335 + Kubota BX2370-1

    Default Re: Tach/Electrical Issue

    If you don't find a loose connection, then check for your dealer's phone number

    They may want to help out with some warranty work if they hear about the trouble with your tractor.
    "Contentment makes poor men rich, Discontent makes rich men poor." Benjamin Franklin

    "...The conflict between believers and non believers is not about the beliefs..." IslandTractor

  4. #4
    Veteran Member SSdoxie's Avatar
    Join Date
    Jun 2010
    Posts
    2,162
    Location
    Cumberland Plateau, TN
    Tractor
    Bobcat CT225

    Default Re: Tach/Electrical Issue

    The hour meter runs off signal from the alternator, when alternator is turning the hour meter registors. The Tach runs off signal from an RPM sensor on the engine. Both signals are sent to the Operation Control Unit then to the instrument panel. The only common connection they have is at the plug to the panel, check this to see if it is loose. If not call your dealer as the next most likely problem is the OPCU.

  5. #5
    Bronze Member
    Join Date
    Aug 2010
    Posts
    53
    Location
    Whitesburg, KY
    Tractor
    2010 Bobcat CT335ss

    Default Re: Tach/Electrical Issue

    I have also noticed that when the Tach/Hour meter is not working, the headlights will not work either. Like I said earlier, after a few mins, they aways begin to work. I will check the connection however as it does act like something is loose.

  6. #6
    Platinum Member MESSMAKER's Avatar
    Join Date
    May 2009
    Posts
    990
    Location
    Bluegrass,KY
    Tractor
    Bobcat ct 225

    Default Re: Tach/Electrical Issue

    Check the ground on the right side of the frame near the hood access latch. It can take some abuse in high brush.

  7. #7

    Default Re: Tach/Electrical Issue

    I've got a 2010 CT335 with the same problem. Had the service guy out in March to look at it under warranty. Said he couldn't find the direct problem, but just went through and wiggle checked everything. That took care of the problem until last week when it started doing it again.

    Guess I'll get 'em back out again and tell 'em to fix it right this time.

  8. #8
    Bronze Member
    Join Date
    Aug 2010
    Posts
    53
    Location
    Whitesburg, KY
    Tractor
    2010 Bobcat CT335ss

    Default Re: Tach/Electrical Issue

    Update:

    I kinda got used to this issue, no big deal I thought, well today it became a big issue!!

    Had not used tractor in a couple weeks, went out, hopped on and I have a lack of voltage to everything.

    Battery is charged to 100%

    I can turn key and I get nothing. No lights, no horn, nothing. I can wiggle and shake the dash and occasionally get it to turn over a couple of times. I can turn flasher on and occasionally can get a faint buzz. Somewhere I'm not getting a good connection. Battery posts and terminals are clean.

    Any ideas?

  9. #9
    New Member HarrowableDriver's Avatar
    Join Date
    May 2013
    Posts
    10
    Location
    Northern AZ
    Tractor
    Bobcat CT335 HST Cab, Bobcat S185 SkidSteer Cab

    Default Re: Tach/Electrical Issue

    I started to have the same problem with my CT335 last week. I have tried wiggle checking everything and sometimes the dash comes back and sometimes it doesn't. Only real problem I have had with my Bobcat.

  10. #10
    Bronze Member
    Join Date
    Aug 2010
    Posts
    53
    Location
    Whitesburg, KY
    Tractor
    2010 Bobcat CT335ss

    Default Re: Tach/Electrical Issue

    Whatever it is, I cant fix it. A couple different times I had the relays clicking like crazy with the dash lighting up when the key was turned on. Only thing I get consistently is turning the key backwards and getting the glow plug lights on and I can hear the plug relay I guess clicking.

    I'm betting on the computer being down.

    Dead in the water, nearest dealer 2.5 hours away, laid off this week due to Obamas war on coal! All that equals to be selling this machine, CHEAP!!!! Has 8tb backhow, 8tl loader, 6' bush hog, 6' roto tiller, 200 and some hours on machine.

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