zero setting tach. New circuit board
Thread Starter
Pro
Joined: Oct 2006
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From: Peoplez Republik (communist portland) Orygun
zero setting tach. New circuit board
I've scoured the archives and cannot locate this...but, I remember that there is a certain method to "zero-set" the tach needle after installing a new circuit board.
I just put in a new cicuit board and the needle works great but it's about 2000 RPM's off.
Anyone remember how to correctly "zero-set" the tach needle after replacing circuit board?
Thx in advance,
Andy
I just put in a new cicuit board and the needle works great but it's about 2000 RPM's off.
Anyone remember how to correctly "zero-set" the tach needle after replacing circuit board?
Thx in advance,
Andy
Racer
Joined: Aug 2000
Posts: 434
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From: Cleveland Ohio
If I remember correctly.......
With tach out of car and apart take off the needle and apply 12v and ground to the tach. With the 12v applied press on the needle pointing at zero "0".
Remove 12v needle should move to something like 1100 rpm. Reapply the 12v and needle should return to zero.
With tach out of car and apart take off the needle and apply 12v and ground to the tach. With the 12v applied press on the needle pointing at zero "0".
Remove 12v needle should move to something like 1100 rpm. Reapply the 12v and needle should return to zero.
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From: Wellington, FL
St. Jude Donor '11 thru '25
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From: San Diego - Deep Within The State of CONFUSION!
Instructor
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From: Miami Fl
Would a circuit board fix a tachometer that works intermittently, jumping around? My tach wont go over 3000 rpm, and it jumps around alot sometimes not working? What issue does that seem to be, sorry to piggyback your thread.
Race Director
Joined: Sep 2001
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From: Wellington, FL
St. Jude Donor '11 thru '25
Read the entire above article...maybe it's covered in it.
Burning Brakes
Joined: Jul 2006
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Thanks Jud, this part has me worried
...
...you will have to zero the needle yourself. Carefully remove the needle. Use your thumb and forefinger to gently pull it off the shaft. ....
Knowing how old and brittle the plastic is, I should probably just go ahead and order a new needle today!
Cause something tells me that my sausage sized fingers are going to be put to the task.
(I'm not known as a delicate jewler)
Thanks for finding that thread, I really appreciate it
......you will have to zero the needle yourself. Carefully remove the needle. Use your thumb and forefinger to gently pull it off the shaft. ....
Knowing how old and brittle the plastic is, I should probably just go ahead and order a new needle today!
Cause something tells me that my sausage sized fingers are going to be put to the task. (I'm not known as a delicate jewler)
Thanks for finding that thread, I really appreciate it
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Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Thanks Jud, this part has me worried ...
...you will have to zero the needle yourself. Carefully remove the needle. Use your thumb and forefinger to gently pull it off the shaft. ....
Knowing how old and brittle the plastic is, I should probably just go ahead and order a new needle today! Cause something tells me that my sausage sized fingers are going to be put to the task.
(I'm not known as a delicate jewler)
Thanks for finding that thread, I really appreciate it
......you will have to zero the needle yourself. Carefully remove the needle. Use your thumb and forefinger to gently pull it off the shaft. ....
Knowing how old and brittle the plastic is, I should probably just go ahead and order a new needle today!
Cause something tells me that my sausage sized fingers are going to be put to the task. (I'm not known as a delicate jewler)
Thanks for finding that thread, I really appreciate it
