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  1. #1
    Member
    Join Date
    Jul 2010
    Posts
    40
    Tractor
    New Holland TC40DA

    Default TC 40 DA fuel gauge question

    My 2004 tractor gauge will only read 3/4 full when fuel is coming out the filler cap (Which is better than reading 1/4 full when out) . Wonder if it's the sending unit or the dash gauge? Has any one ever had the unit out of the tank and what does it look like? Thanks Don

  2. #2
    Super Member deerseeker001's Avatar
    Join Date
    Jul 2011
    Posts
    7,880
    Location
    Central wisconsin
    Tractor
    International 2500a with Loader

    Default Re: TC 40 DA fuel gauge question

    I replaced my sending unit and the gas gauge on my international,it always read full till i a wire and grounded to the fender.
    ::welcome :::RON
    never stop learning.

  3. #3
    Bronze Member
    Join Date
    Jun 2012
    Posts
    50
    Location
    Central, NY
    Tractor
    NH 2005 TC40DA

    Default Re: TC 40 DA fuel gauge question

    My gauge reads full when it is really full- like all the way up to the little holes in the neck (vents I assume). I never trust the gauge for accurate reading- I just open the cap and peek in!

  4. #4
    Bronze Member
    Join Date
    Mar 2010
    Posts
    80
    Location
    NW Ohio
    Tractor
    NH T2310

    Default Re: TC 40 DA fuel gauge question

    Several reports of NH40 fuel gauges not reading correctly. Mine doesn't, has never been right. Supposedly caused by the float rubbing on the inside of the tank and causing an erratic reading. After learning the hard way by running out of fuel and having to bleed the air out of the injector pump line to get restarted, I just keep an extra 5 gallon jug of diesel and fill up when I think its about 1/2 way down.
    New Holland T2310, NH 250TL loader, United 672HD box blade, Construction Attachments 42HD forks, KK II 6' tiller

  5. #5
    Epic Contributor
    R.I.P.
    jinman's Avatar
    Join Date
    Feb 2001
    Posts
    21,014
    Location
    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: TC 40 DA fuel gauge question

    Check the resistance of the wire from the float to ground (disconnect before testing). It should be around 33 ohms when the tank is full. If it looks okay, ground the wire and see if the gage goes to full. If not, the gage needs replacement. 255 ohms is the reading when the tank is empty.
    Jim


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