'79 GS550E tach squealing - how to rebuild/fix?

[charlie27]

hi,

out of the blue the tach on my bike starts squealing. did the usual cable lube but its in the tach unit.
any instruction on disassemble to fix/clean/rebuild and make this go away? Thanks

[Cipher]

I have read that heavy gear oil dripped into the shaft will quiet things down for a long time.
I have done it and have not heard a sound in years.
Use sparingly and you will have to invert the tach.

[charlie27]

ok, thanks
so remove the tach from bike, place face down and oil with a few drops of gear oil

hope that does the trick

[Cipher]

yes sir
yes

[bwringer]

You may need to open the case. Mine was making a shriek to wake the dead, but oil down the shaft hole wasn't able to reach the area that was binding.

I removed the tach from its case and was able to get a few drops of oil into the bushing. That was about five years ago and it's been fine ever since.

[charlie27]

put a few drops of light weight penetrating oil into the shafts on tach and speedo and good to go. thanks for the help!!!