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Tachometer - Anti clockwise

J

Joost

New User
The anti-clockwise tachometer on my 1970 mf135 is up for retirement. As it is cable driven i assume I can only replace it with another anti-clockwise.
Is this the case?
Does anyone have experience or advice?
 
Yes, for some reason tractors with continental engines the tach went clockwise and perkins engines turn the tach counter clockwise.
 
I have a MF 50 gas and the tach (electronic) turns clockwise.. My Ford NAA has the cable driven tach which turns counter clockwise. Keeps me on my toes remembering which
tractor I'm on.
 
I am replacing the one on mine with an electronic one too. Still has the needle and 2500 rpm range but the hour meter is digital.
 
what type or model are you buying? I would like to go electronic too and not use the cable, but the counter clockwise may not work.
 
what type or model are you buying? I would like to go electronic too and not use the cable, but the counter clockwise may not work.
 

Thanks ROCKEPG. I looked at that last night but i could not figure out how it get its tach signal input. Do you know?
 
It takes a couple different inputs. If you have an alternator with tach output it will accept that as well as traditional ignition coil inputs. It will also take modern sensors that monitor spark but won't apply to these old girls. Whichever method you choose there is basic "programming" that needs to be done but it's really simple.
 
OK thanks. I am a 'fresh' to this side of the tractor refurb. Bought a 1970 MF135 with 3cyl Perkins gas engine. Do not know if the alternator has this output, but will go ask the vendor and not bother you with this details. Thanks for the reply.
 
Two easy ways to tell. On the back of the case where the two, sometimes 3, pronged plug goes in there will be a hole in case right next to the plug. If there is a stud in that hole then you have tach output. The other way is that plug itself. If there is a 3 prong and the plug is like an L shape then that third plug is the tach output. Assuming of course you have a older style GM alternator. If you have a true one wire alternator then there will be a big rubber plug blocking off the section where the two pronged plug would go. However the small stud next to that area still applies.
 
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