1967 odometer fix
Thread Starter
Instructor
Joined: Jun 2007
Posts: 157
Likes: 1
1967 odometer fix
All gauges rebuilt years ago and still look new but odometer stoped working after 4K miles
I can take the speedo apart but can you get the parts? If I don't mess with the speed cup will it need to be recalibrated?
If so how do you you recalibrate?
Thanks,
I can take the speedo apart but can you get the parts? If I don't mess with the speed cup will it need to be recalibrated?
If so how do you you recalibrate?
Thanks,
Last edited by cpmman; Mar 28, 2011 at 07:53 PM.
Thread Starter
Instructor
Joined: Jun 2007
Posts: 157
Likes: 1
I took it apart tonight. One of the worm gears needs replacing. They are 3 worm gears, one of which is inside the speedo cup. If it is replaced the speedo needs to be recalibrated, meaning it neeeds to be magnitized and/or degaussed. There is a magnetic field that needs to be dialed in to calibrate.
The gear replacement is easy, the calibration is not.
I will either send it out or leave the odometer as is.
Have fun...
The gear replacement is easy, the calibration is not.
I will either send it out or leave the odometer as is.
Have fun...
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
They all break. The trip odometer puts too much pressure on the drive gears. If it is repaired with plastic gears, you are lucky to get 5K or so out of it before it goes again.
We used to look for and rob school busses and trucks of their metal gear sets, because the metal ones were not available. Someone may be making the metal ones now. If so you might get 50K or so out of them.
For this reason, and others, low mileage Corvettes of that era are all " suspect" to say the least.
We used to look for and rob school busses and trucks of their metal gear sets, because the metal ones were not available. Someone may be making the metal ones now. If so you might get 50K or so out of them.
For this reason, and others, low mileage Corvettes of that era are all " suspect" to say the least.
