Rev Counter - needle slow to return / stuck

[salty_monk]

Any thoughts on a cure for this? Or does anyone have a good one for an 82 1100G kicking around.... I wonder if I should try a new cable first?

What?s wrong with this.... by salty_monk, on Flickr

 

[limeex2]

Lube it and all the others too! You can go budget by cutting the corner of a ziplock bag, put the cable through hole then seal up bag/cable entry area with a rubber band. Put lubricant in bag hang it with bag on top and let gravity work the oil through.

 

[salty_monk]

I use one of the needle type systems to lube cables & these ones have already been lubed....

Something like this

 

[Redman]

Probem with cable isnt going to cause the tack to "hangup and go down slow". Isntr anyway for the cable to keep spinning after the engine rpms goes down.
Problem with cable usually cause the gauge to jump around or stay at zero.​

 

[salty_monk]

Yeah that's what I figured...

I've never been inside one of these gauges so I can't really decide how it might be hanging up. I wonder if there is some grease in there that may have hardened with lack of use & perhaps with some use will free off again.... ?

I gave away the spare I had a while back. Murphy's law!

 

[Brendan W]

Before opening it up, give it some time to free itself and try a 'dry ultrasonic' clean.
Take a vibrating power tool like a sander or jigsaw and let it do magic on the tacho housing.

 

[Grimly]

Before opening it up, give it some time to free itself and try a 'dry ultrasonic' clean.
Take a vibrating power tool like a sander or jigsaw and let it do magic on the tacho housing.

Then carefully tip the contents into a plastic bowl. :smug:

 

[Guest]

Yeah that's what I figured...

I've never been inside one of these gauges so I can't really decide how it might be hanging up. I wonder if there is some grease in there that may have hardened with lack of use & perhaps with some use will free off again.... ?

I gave away the spare I had a while back. Murphy's law!

From my memory of the ones I've [usually unsuccessfully] entered, there is often a ball of what I presume is silicone gel around one of the pivot points which serves to keep the needle from oscillating about. This can get pretty slow over time but usage seems to free it up. Probably depolymerizes the gel.

If you have an electric drill or impact tool and can find a #2 Robertson bit [square] or equivalent to spin the shaft you can feed it bursts of revs to exercise it up and down without having to run the motor. I have a disassembled one in the shop that I can look at or photograph, but you really don't want to take one apart unless it's an autopsy.

 

[salty_monk]

Now I can ride it... trying to free it off just gives me an excuse to ride it more!