Removing the Needle from tachometer
I would like to replace the face on my tach. However, I can't get the needle off. Is there a trick to removing the needle without braking the shaft? If I wiggle the needle back and forth it will most likely brake the shaft tip off.
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Just hold the needle by the center and turn it counterclockwise gently, and it should come right off
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No need for fancy tools. Like 65 Pro Vette said, just turn and gently pill. It will come off. Now putting it back on were it reads correct speed or RPM is a different matter.
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Originally Posted by 67vetteal
(Post 1595533348)
https://www.youtube.com/watch?v=KWxZWLs_vgk
Google is your friend. Al W.:flag: |
Originally Posted by jet-tech
(Post 1595533485)
No need for fancy tools. Like 65 Pro Vette said, just turn and gently pill. It will come off. Now putting it back on were it reads correct speed or RPM is a different matter.
I'm just thinking line it up and press. |
To Remove:
Grasp the round part of the pointer between your thumb and forefinger. Turn the pointer counterclockwise while gently lifting and the pointer will come off. If the pointer and shaft assembly should turn freely together the speed cup is broken. Grip the shaft with pliers then follow the above removal procedure. To Reinstall: Install the pointer by placing it at about the 12 o'clock position on the shaft. Push down while turning the pointer counterclockwise to the 0 position. Increase pressure gradually while turning and the pointer will be locked to the shaft. |
Be sure to inject some dielectric silicone lubricant between the shaft and the enclosing tube. This serves to dampen the needle's movement and after 60 years most tachs' dampening fluid is long gone. If your tach needle swings wildly, you need to do this.
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Originally Posted by 65tripleblack
(Post 1595537698)
Be sure to inject some dielectric silicone lubricant between the shaft and the enclosing tube. This serves to dampen the needle's movement and after 60 years most tachs' dampening fluid is long gone. If your tach needle swings wildly, you need to do this.
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Originally Posted by woodsdesign
(Post 1595539261)
Is the "enclosing tube" the framework that houses the speed cup?
Best I can explain it. If I had a picture I would post it. I had my gauges restored in 2002, but didn't know about this at the time, so I restored and assembled my cluster without doing this. After hearing about how the gauges were damped from the factory, I decided to try this about 5 years ago to calm down my wild tach needle. It works perfectly now. This video is "before". You'll have to trust me on the "after". |
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