[deputyr24]

Just recently, I the speedo stopped working on my CV. I took it to a local shop, and $75 and 30 minutes later I was happy as a clam. It looked easy to disassemble the dash, so I probably could have done it, but the work on the speedo unit is very specialized, so it's best to defer to the pro's.
Good luck!

 

[deputyr24]

After you get all the screws out, the speedo unit just sits in the dash. You have to remove the oil and volt meters first, but they just sit in there, too. Once it was out, the tech treated it like it was a bomb he needed to defuse, it was so delicate, so be careful when you do pull it out. He changed a gear, cleaned it and re-certified it - all in about thirty minutes.
Let me know how it turns out.

 

[deputyr24]

Another thing - where can you get Ford shop manuals on the web? I've looked for CVPI manuals, but cannot find them. I'd prefer them on CD, but paper will do.