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  1. #21
    Super Member
    Join Date
    Apr 2000
    Posts
    8,023
    Location
    Shingle Springs California
    Tractor
    New Holland TC40D

    Default Re: temporary relay defeat

    Well, works like a charm. Correctly...

    Now, for the steering. The telescoping steering works fine, but the tilt does not. The lever is stuck...
    RobertN in Shingle Springs Calif

  2. #22
    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: temporary relay defeat

    Quote Originally Posted by RobertN View Post
    Well, works like a charm. Correctly...
    Woohoo! . . . That's the sound NH makes everytime it sells another glowplug timer relay.
    Jim


  3. #23
    New Member
    Join Date
    Jun 2012
    Posts
    3
    Location
    Terre Haute, IN
    Tractor
    New Holland TC 35 & TC40D

    Default Re: temporary relay defeat

    Thanks for the picture of the relay boards. After giving mine a blow job it has less dust. :-)

    Anyway does anyone have a layout of the boards identifying the various relays? K3, K4, etc.

  4. #24
    Epic Contributor
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    jinman's Avatar
    Join Date
    Feb 2001
    Posts
    21,014
    Location
    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: temporary relay defeat

    Quote Originally Posted by Jerry Lehman View Post
    Anyway does anyone have a layout of the boards identifying the various relays? K3, K4, etc.
    Jerry, welcome to TBN. Up above the forum is the "Search" tab. If you had used that tab and searched for "relays" in the New Holland Owning/Operating forum, one of the first threads would have been this one where I posted an illustration of the relays. They are identified by name and not by number (K1, K2, etc). The callout numbers have no cross-reference to the actual relay numbers shown on schematics. Even the Illustrated Parts Catalog online identifies them by name instead of number. It's a wacky system, guaranteed to confuse.

    If you learn to use Search on these forums, you'd be surprised at the info you can find.
    Jim


  5. #25
    New Member
    Join Date
    Nov 2012
    Posts
    1
    Location
    De Soto, KS.
    Tractor
    New Holland TC40D

    Default Re: temporary relay defeat

    Thank you so much for the information. I took AndyG's advice too and installed a push button in the dash wired to pins 3 and 6 and it works great! I just hold in the button for 5 seconds and it fires right up. It was 20 degrees this morning and it started with no problem. Thanks again, Don



    Quote Originally Posted by jinman View Post
    Robert, I looked at the circuit and there is a simple jumper you can do to get the tractor started if you want. The glow plug TIMER just supplies a ground to the coil of the glow plug POWER relay. With the plug removed from the TIMER, jumper pin 3 to pin 6 in the plug and you'll get glow plugs ON. Hold this for 5 or 6 seconds, remove jumper, and then quickly hit the ignition switch and I'll bet it will fire right off. This is a low current circuit, so a tiny little jumper wire will work fine.

    Edit: If you look into the back of the plug, pins 3 and 6 are the pins where the black and brown wires attach. The orange and white wires are power to the timer.

  6. #26
    Epic Contributor
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    jinman's Avatar
    Join Date
    Feb 2001
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    21,014
    Location
    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: temporary relay defeat

    Quote Originally Posted by Don54 View Post
    Thank you so much for the information. I took AndyG's advice too and installed a push button in the dash wired to pins 3 and 6 and it works great! I just hold in the button for 5 seconds and it fires right up. It was 20 degrees this morning and it started with no problem. Thanks again, Don
    Don, it's been over 1-1/2 yr since I posted that tip and I'd forgotten posting it. Thanks for the reminder and thanks for your confidence in my advice. In the meantime, I've found sources on eBay for timers at much better prices. These seem to be common to New Hollands and Kubotas.
    Jim


  7. #27
    New Member
    Join Date
    Jan 2013
    Posts
    6
    Location
    Edinboro, PA
    Tractor
    New Holland TC35DA

    Default Re: temporary relay defeat

    I have a TC35DA and hve determined that the glow plug timer is faulty. My research found testing info that the timer can be temporarily and quickly bypassed with the harness connector removed by jumping the brown to the black wire in the harness with the ignition switch on. Bypassing too long can burn up the glow plugs but I confirmed this to be a good system check. My question involves trying a kubota part to replace this pricey timer. Prices on NGK timer S81NF are between $71 and $89.E bay parts search has a kubota NGK S81NL 12 volt timer for about $12! Tempted to try it as it has the same case and pin configuration. Has anyone else tried this? Could someone let me know how long their glow plugs stay lit with timer S81NF? (current New Holland Part #SBA385870301) Thanks, Randy

  8. #28
    Epic Contributor
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    jinman's Avatar
    Join Date
    Feb 2001
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    21,014
    Location
    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: temporary relay defeat

    Yes, the kubota timer works fine though it might vary from your original by a couple extra seconds. You'll never know the difference. I keep two of them for spares.
    Jim


  9. #29
    New Member
    Join Date
    Jan 2013
    Posts
    6
    Location
    Edinboro, PA
    Tractor
    New Holland TC35DA

    Default Re: temporary relay defeat

    Thanks Jim I'll order up a couple today.

  10. #30
    Member
    Join Date
    Jul 2014
    Posts
    36
    Location
    SE Michigan
    Tractor
    Case DX33 Farmall

    Default Re: temporary relay defeat

    Quote Originally Posted by jinman View Post
    Yes, the kubota timer works fine though it might vary from your original by a couple extra seconds. You'll never know the difference. I keep two of them for spares.

    This is an older post so I just wanted to check in and see if this Kubota relay is a long term fix, either of you guys have long term luck with it?

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