nutty tachometer

Message

jbob286 · #1 Unread post by **jbob286** » Sun Jul 03, 2005 2:04 pm

My tach sometimes, usually at low speeds, works fine. But at higher speeds it just bounces allover the place. I've removed the cable, cleaned, and greased it, but that has not solved the problem. Is there a sensor I can replace? Or does this mean there could be problems with the transmission? The transmission is noisy at idle, you can tell the difference with the clutch engaged as opposed to disengaged. Downshifting can be sketchy if you don't do it at the right speeds. For example if I wait to go from 6th to 1st until I'm completely stopped it won't work. But if i shift down as I'm slowing down it works fine.

Gadjet · #2 Unread post by **Gadjet** » Sun Jul 03, 2005 7:01 pm

Tach and transmission have nothing to do with each other. The Tach is driven off the camshaft, and if you are experiencing problems with it, it is most likely something internal in the guage itself.

BuzZz · #3 Unread post by **BuzZz** » Sun Jul 03, 2005 7:15 pm

Sounds like the damping fluid has leaked out of the needle actuator.... if it's an older bike. If it is a newer bike, the tack may be electronically controled.

jbob286 · #4 Unread post by **jbob286** » Mon Jul 04, 2005 5:43 am

Yea its an 82. Can I take the tach a part and fix this or am I looking at getting a new one?

BuzZz · #5 Unread post by **BuzZz** » Mon Jul 04, 2005 4:27 pm

An '82 WHAT??? (why do people recite what kind of bike they ride down to the brand of tires and accesorries anytime they even hint they own a bike..... everytime except when they ask a technical question?????

Sorry, just a little tangent I went off on, not directed at you jbob

, just yippin'...end rant

)

Anyway, back to the subject.... some gauges it is possible to get them apart, drill, fill and seal the damping mechanizm with a light oil or a silicon fluid. It is not an 'offical' repair, more like what we call a jury-rig. Guerilla-style bike repair, for sure. If yours is one of the ones that this can be too or not, I don't know. I found a page on the web about how to do it to my old FJ.... google is your friend. So is wading through heaps of garbage to find a bit of useful info.

jbob286 · #6 Unread post by **jbob286** » Tue Jul 05, 2005 11:25 am

82 yamaha xj550 maxim

thanks for the help

TechTMW · #7 Unread post by **TechTMW** » Tue Jul 05, 2005 5:02 pm

Hey jbob - i dunno where you are from, but any japanese bike junkyard should have a few compatible tachos lyin around, if you can't fix yours.

Aggroton · #8 Unread post by **Aggroton** » Wed Jul 06, 2005 3:39 am

jbob286 wrote:82 yamaha xj550 maxim

thanks for the help

they are all over ebay too...i checked...i have the seca not the maxim and i wondered if the guages looked any different on the maxim...they dont.

jbob286 · #9 Unread post by **jbob286** » Wed Jul 06, 2005 12:07 pm

I'm in Michigan USA... I'll have to look into the junkyard thing and ebay, thanks guys