[mmoore]

I've noticed that the internals of my tach seem to be loose and when I hit a bump the whole assembly bounces inside the housing.

Anyone had this happen to them, and is there any way to tighten things up? There are some posts where you'd expect screws to be in the back, but AFAIKT they don't really do anything.

 

[Guest]

Factory tacho?

 

[mmoore]

Yes it is. I sent it off to Palo Alto Speedometer to be fixed, which it was, but now as it happens the problem is starting up again.

 

[asf]

The post with the three screws worked on my bike. Before the tacho would stop reading every now and then. I'd try that before anything else, takes only a few minutes to do.

 

[krista_k]

"post with the three screws?"

Zina's factory tach had the screws fall out of the face and needs "repair". My DP tach needle is bouncing all over the place and it, too, needs "repair".

 

[asf]

http://www.ducatimonster.org/smf/index.php/topic,10895.0.html

I had a problem with the screws coming loose inside my tach and the face would just spin around inside the housing. I had no luck pulling the tach apart so i took the advice of a fellow DML'er and just cut the tach apart. While it was apart I learned how it works and why mine never worked until i tightened up all the screws in it.

First i cut the tach all the way around with my dremel:

Then i removed the three brass screws on the back of the tach:

Then i pulled the tach apart. as you can see in these pictures the tach gets it's power/reading through the 3 contact points on the circuit board. The problem i was having with my tach not working was that the 3 brass screws weren't tightened enough and the tach was not making good contact with the circuit board. If your tach doesn't work you may want to make sure these 3 brass screws are tight.

After screwing the face of the tach back in place and tightening the screws really well ... i put the parts of the tach back together and used JB Weld to reassemble the tach casing.

For those of you wanting to change the lighting colors of your tach/speedo, you will have to change the actual backdrop of the tach and speedo. It's made out of plexiglass i believe and the face of it is partially transparent where the light shines through. I tried using blue light bulbs to light the tach but the color stayed the same.

 

[asf]

"post with the three screws?"

Zina's factory tach had the screws fall out of the face and needs "repair". My DP tach needle is bouncing all over the place and it, too, needs "repair".

You can just tighten the "3 brass screws" from the back of the tach without having to cut the tach. But if the screws have fallen out time to bust out the dremel...

Just tightening the screws may fix any attitude the tach is giving you.

 

[mmoore]

Is getting the tach out of the housing fairly straighforward?

 

[krista_k]

You can just tighten the "3 brass screws" from the back of the tach without having to cut the tach. But if the screws have fallen out time to bust out the dremel...

Just tightening the screws may fix any attitude the tach is giving you.

Get this .. on her tach, the two screws on the FACE of the tach fell out.

On MY DP tach, you can't even SEE the three screws on the back of the tach.

Both get to get cut. NIIIIIICE.

;D Chris

 

[adam900]

The screws backed out on my tach about a year ago. I have a '00 M900ie. I ended up cutting the tack body open like is shown above. I tried to open it in a intrusive way, but the plasit is very brittle and i didn't want to crack any part of the body you can see. Good luck. The ducati tachs are the worst i've ever seen or heard of.