tach repair

[Pinkie]

My tack is jumping around alot on the dial, reads at idle but not over that I think. I looked through the TMs and could not find how to lube it. The TMs I read just said to replace it.

Thanks,

J.R.

 

[Opie]

Have you recently pulled the instrument or instrument panel for some reason? If the ground provided by the four twist lock fasteners at the corners of the panel go bad, the instruments all start their own St. Vitus' dance.

 

[rizzo]

mine does that too. Just started now that it is cold. Or it just broke.

 

[ida34]

Re: RE: tach repair

Have you recently pulled the instrument or instrument panel for some reason? If the ground provided by the four twist lock fasteners at the corners of the panel go bad, the instruments all start their own St. Vitus' dance.

The tach is cable operated. Grounds will not effect it. The cable may be binding. You can disconnect it at both ends then spin the cable by hand and see if you can feel any binding. This will tell you whether you need a new tach or a new cable.