Results 1 to 3 of 3
  1. #1
    New Member
    Join Date
    Dec 2012
    Posts
    2
    Location
    clarkesville,ga
    Tractor
    c70 MCCormick,mf255,

    Default C70 tachometer quit

    Please advise testing of tachometer. My c70 was running and the tach went to bouncing at the needle then died. The battery light also came on. I pulled the alternator and the shop put a voltage regulator on it. I didn't check voltage before i carried it to be repaired. I reinstalled the alternator,checked the belt and had the light come on and no tach. I did check the voltage after that and had 14.3 at the battery and at the alternator.
    The tach reads about 4000 with the key on but drops to zero when cranked. Any help would be greatly appreciated. Thanks,coondog706

  2. #2
    New Member
    Join Date
    Feb 2010
    Posts
    12

    Default Re: C70 tachometer quit

    Do the other functions of the instrument cluster work? If so you may have to replace the tach. There isn't really a test for the tach other than checking the W Terminal ( yellow wire) for an ac signal to the dash panel.

  3. #3
    New Member
    Join Date
    Dec 2012
    Posts
    2
    Location
    clarkesville,ga
    Tractor
    c70 MCCormick,mf255,

    Default Re: C70 tachometer quit

    Thanks for the info MCC. I did't mention that the light is still on even though the voltage reads ok. I suspect a diode in the alternator ,because everything else is working except battery light on and tach is dead. Thanks, coondog706

Similar Threads

  1. Any C70 owners?
    By frankv in forum McCormick
    Replies: 19
    Last Post: 09-06-2013, 01:36 AM
  2. Tachometer
    By Ace Ford in forum Century & Branson
    Replies: 1
    Last Post: 09-17-2012, 06:20 PM
  3. Rear Finish Mower Befco C70 90" finish mower
    By bnhawkins in forum Attachments
    Replies: 8
    Last Post: 02-19-2011, 11:40 AM
  4. Tachometer
    By BigTex in forum Chinese Tractors
    Replies: 11
    Last Post: 11-12-2009, 08:44 PM
  5. Possible Tachometer?
    By woodlandfarms in forum Power Trac
    Replies: 3
    Last Post: 04-09-2007, 08:44 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.