yup. it is extremely easy to take the apart. once you take the pegs or screws out around the edge the clear lens and black plastic thing comes out. then there should only be 2 screws holding the speedo in. i think you can also take one out of a 80-89 b series ram but i am not sure. i took one out of a 87 b250 and it worked fine.

 

I found two places that will rebuild the speedometer. Other speedo repair companies say they cannot get the parts and spoke negatively about the plastic gears and parts in that particular speedo. My speedo does not have a trip odometer and it seems the ones on Ebay do have trip odometers. It might take some time to find one. Rebuilding estimates are $150 - $250. Some vendors (who did not offer to rebuild mine) believe that the rebuilt ones are from salvaged parts and the problem will persist due to the cheap plastic parts.

Anyway, the speedo is off, I can drive the truck now without all the ringing of the speedo needle. I will take some time and try to find one at a reasonable price. Then, I will swap out the odometer with mine since my truck has only 38,522 original miles.

I appreciate all the help and will follow up with the results.

 

Update. It took two speedos from the same junkyard to get one that worked. Unfortunately, the second had a trip odometer and I could not put my original odomeeter on without the last digit on the left being hidden since the 1/10ths are now on the trip odometer and not the odometer. So...I decided to use the "new" odometer. It is 17,000 miles off of my original. If I decide to drop another $35 I can get another off of Ebay without the trip odometer. Now, back to the carb! Thanks for your help!

 

so you actually took them apart? if the ones from the junk yard worked i would have just left them. originally my truck had a speedo without tripometer. since i had all the parts to install the one with trimometer i did. it makes guessing your mpg a lot easier plus the speedo with the tripometer has a max speed of 20km/h more than the speedo without the tripometer.

 

I did not take them completely apart, just removed the odometers and swapped them out. If anyone does this, I suggest they put tape across the numbers to stabilize them BEFORE removal. But, I then swapped them back when I saw that I could not see all the digits on my non-trip odometer on the "new" speedo. I wanted my original odometer's numbers since I only have 38k original miles. The "new" odometer only has 21k miles, which is better, but not reality. So, I really did not take them apart.

 

I finally figured out how to change my salvaged odometer to match the original that it replaced. As noted above, the new speedo had a trip odometer and the old one did not. It seems there are at least two ways to do this, the hard way and the easy way.



The hard way.


Remove the odometer from the speedometer unit. Make sure that the mileage is centered in the middle of the metal disks that are between each cylinder. Essentially, there will be a row of metal “spokes” above and below. Attach a drill chuck to the little metal tip next to the gear sprocket and run the drill in reverse. All the while stabilizing the metal “spokes”. I used a sheet of glass. Depending upon the speed you select, this changes the odometer about 6,000 miles in an hour.


The other way is kind of like doing a Rubik’s cube.


Pretend your mileage is "1 2 3 4 5 . 6". Hold the far left digit (1) and the one “spoke” to its right with your left hand. Keeping the digits to the right stabilized (2345.6) with their metal spokes, turn those cylinders and their spokes in unison in an upwardly direction, after an almost complete revolution, when the spoke/cylinder that is the furthest to the left (2) of the rotated ones catches, push it on through and you will feel it catch the non-rotated cylinder (1) and rotate it one digit. Keep doing this until the furthest to the left cylinder (1) is at the digit you want and then move one cylinder to the right and repeat this process.


With the drill...




Results from turning the cylinders:




---------------------------------------------------------

 

i changed mine the second way you posted but i did not install mine immediately and forgot to add 50km so i will have to take mine apart again and update it and install it. i was setting mine up to reflect the amount of km i have put on the truck since i got it.

 

Crazzywolfie, in retrospect, it is just tricking out the odometer by stabilizing the cylinders to the right of what you are trying to change.

Now I am waiting for the new speedo gear to arrive that has more teeth and hopefully make the speedometer/odometer more accurate than it has been. I am going from 35 to 37 teeth.

--Pumbu