RE: Tachometer

[chanclas90063]

Hello Group, I have a 1970 Chevy C-10 and the tachometer does not work. It looks like it is missing the needle. I purchased a new one from Brothers and when we pulled the bezel off, it appears that the entire back is sealed. Is it necessary to break the seal to install the new tach?? Thanks for any advice or suggestions...

[michael bustamante]

love the screenname. my gramma was very accurate with her chanklas! haha
are you replacing a factory tach?

[leftybass209]

Originally Posted by chanclas90063

Hello Group, I have a 1970 Chevy C-10 and the tachometer does not work. It looks like it is missing the needle. I purchased a new one from Brothers and when we pulled the bezel off, it appears that the entire back is sealed. Is it necessary to break the seal to install the new tach?? Thanks for any advice or suggestions...

The instrument cluster must be partially disassembled to install a new tachometer. There is nothing "sealed" from the factory. There's a series of screws around the perimeter, the bulbs need to be removed so the circuit can be removed from the back, and it should be fairly self explanatory when you remove pieces as to the installation.

[chanclas90063]

Originally Posted by michael bustamante

love the screenname. my gramma was very accurate with her chanklas! haha
are you replacing a factory tach?

I'm not sure if it is the original, but it appears to be original. I ordered an original replacement which appears to fit the bezel.

[chanclas90063]

Originally Posted by leftybass209

The instrument cluster must be partially disassembled to install a new tachometer. There is nothing "sealed" from the factory. There's a series of screws around the perimeter, the bulbs need to be removed so the circuit can be removed from the back, and it should be fairly self explanatory when you remove pieces as to the installation.

If you are correct, then the cluster I have is not factory. When I removed the cluster, the back appears sealed with a thick plastic covering the back of all the instruments and is sealed. Maybe I will send this tach back to the vender and just purchase a complete replacement set already for immediate installation. Thanks for the suggestions and ideas...

[EARNHARDT#3]

Originally Posted by chanclas90063

If you are correct, then the cluster I have is not factory. When I removed the cluster, the back appears sealed with a thick plastic covering the back of all the instruments and is sealed. Maybe I will send this tach back to the vender and just purchase a complete replacement set already for immediate installation. Thanks for the suggestions and ideas...

That's the flexible printed circuit board. Go ahead and take it off.

[michael bustamante]

can you post a pic of the front and back of the cluster? that would help alot

[chanclas90063]

Originally Posted by michael bustamante

can you post a pic of the front and back of the cluster? that would help alot

Sorry, the truck is a couple of hundred miles away getting an upgraded tranny. The consensus seems to be that the back is removable so that is what we will do. I almost retuned the tachometer but will hold onto it...

[leftybass209]

The original gauges don't look like any of the aftermarket gauges. You can take a quick look at a stock cluster. If your gauges don't look like them, then you have some type of aftermarket cluster. If your gauges resemble original style gauges, then they will disassemble easily.

They're easily identifiable because the numbers and letters are printed on the clear plastic lens, NOT on the gauge itself as you can tell with the new tach you purchased.

[lolife99]

Look here for info:
http://www.earlyclassic.com/tech.asp...Tach%20It%20Up

[chanclas90063]

Originally Posted by lolife99

Look here for info:
http://www.earlyclassic.com/tech.asp...Tach%20It%20Up

This is great, thank you...