Electronic Tachometer Implementation

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Again, this is off Allis topic but I do use this semi as "farm equipment".  I can't resist asking because the electrical help is phenomenal on the forum!  The GMC General semi that I just fixed the burnt wire on has no mechanical tachometer cable.  I believe it is missing due to the Cummins engine replacement.  The tach cable may not have matched the tach in the dash.  Just wondering if it would be possible to install a new Electronic Tachometer that uses the alternator?  I believe I have the 12000 LC series Leece/Neville alternator but they do have multiple models and not sure which one I have.  Would this alternator work with an Electronic Tachometer?  The other option is to purchase a mechanical cable and replace the tach in the dash that fits that cable.  I would really like a working tachometer on this truck.  I don't care about the odometer.  To bring this topic back to tractors though, could you also implement an electronic tach on a tractor if you really wanted to do that?  Thanks for any and all electrical advice!

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
calico190xt68 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Jan 2017 Location: Frankton, IN Points: 789	Post Options Post Reply Quote calico190xt68 Report Post Thanks(0) Quote Reply Topic: Electronic Tachometer Implementation Posted: 4 hours 47 minutes ago at 5:00pm
	Again, this is off Allis topic but I do use this semi as "farm equipment". I can't resist asking because the electrical help is phenomenal on the forum! The GMC General semi that I just fixed the burnt wire on has no mechanical tachometer cable. I believe it is missing due to the Cummins engine replacement. The tach cable may not have matched the tach in the dash. Just wondering if it would be possible to install a new Electronic Tachometer that uses the alternator? I believe I have the 12000 LC series Leece/Neville alternator but they do have multiple models and not sure which one I have. Would this alternator work with an Electronic Tachometer? The other option is to purchase a mechanical cable and replace the tach in the dash that fits that cable. I would really like a working tachometer on this truck. I don't care about the odometer. To bring this topic back to tractors though, could you also implement an electronic tach on a tractor if you really wanted to do that? Thanks for any and all electrical advice!
	80 7010, 80 7020. 67 190XTD Series I w/500 Loader, AC 2000 Plow, AC 4 row Planter, AC 77G Rake, Member Indiana A-C Partners, Member TAC

Sponsored Links

jaybmiller Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 22234	Post Options Post Reply Quote jaybmiller Report Post Thanks(0) Quote Reply Posted: 4 hours 45 minutes ago at 5:02pm
	Alternators designed for tachs will have a 'special' terminal or tab. That info 'should' be in the spec sheet......
	3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water

PaulB Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Rocky Ridge Md Points: 4654	Post Options Post Reply Quote PaulB Report Post Thanks(0) Quote Reply Posted: 4 hours 17 minutes ago at 5:30pm
	If the tachometer in the dash is a mechanical unit and the rotation is the same, just get a drive cable made to go from the tach drive on the engine to the dash. For an electric tach get mechanical sender that goes where you would connect a drive cable.
	If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY

steve(ill) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 80117	Post Options Post Reply Quote steve(ill) Report Post Thanks(0) Quote Reply Posted: 2 hours 32 minutes ago at 7:15pm
	and on a tractor.... diesels engines normally use the pickup stud on the alternator... gas engines can use the PULSE from one spark plug...... and it is always possible to mount s SPEED PICKUP sensor on a bracket near the crank shaft pulley and use a magnetic strip on the pulley, or a set screw, or a hole, etc... anything you can COUNT per revolution.
	Like them all, but love the "B"s.

8070nc Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Access Joined: 21 Mar 2019 Location: North Carolina Points: 492	Post Options Post Reply Quote 8070nc Report Post Thanks(0) Quote Reply Posted: 1 hour 13 minutes ago at 8:34pm
	It is possible to put to get a tach and pickup. Speedhut has everything you need on thier website. You can have the tach made with different background colors and even a logo. I just had one made for my L3 gleaner. Its possible that the sae belhouing has a hole drilled and tapped for the pickup
	1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor