rebuilding a speedometer

has anyone rebuilt or at least torn there speedo apart? the one in my 66 has a locked up speedo and the gauges do not work. i realy dont like the new style replacements so i was thinking a\bout at least pulling the one i have apart and tring to make it work.
any guide or details would be awesome.

 

A quick search using the search function netted tons of posts and some good info on this. Here's one to get you started:
http://www.earlycj5.net/forums/showthread.php?52758-Speedo-repairs&highlight=speedometer+rebuild

 

Depends on the problem. I've opened up old speedos and cleaned out the crud. But if it needs recalibrating of the spring or degaussng the disc that's a different matter.

I've not done a jeep unit, but there are specialists who can rebuild any speedo. I found one in Hemmings Motor News who did a great job on my '34 Ford speedo.

Of course another option is find a good used or NOS unit, perhaps on ebay, or on this site.

 

I've taken apart and rebuilt the speedo in my '58. You might find that it may just need a little oiling before it starts working again. There's a brass plug on the side of the geared section...remove that and put a couple of drops of 3'n1 in there and see if that doesn't help. I even set the mileage back to all zeros on mine but it was kind of a time consuming operation...something I did while watching TV. You can find the water temp and fuel gauges on eBay from time to time.

 

I attempted to take apart my original that came with my jeep (says 0-9) and it was really easy to disassemble but unfortunately mine wasn't able to live again. Since then I bought a NOS unit off ebay for like 175 dollars and its worked really well ever since.

 

was it from someone called blue moon scooter or something? cause if so i bought one to hahaha

 

Yep, I did in fact buy it from bluemoonscooter off ebay and it was shipped from Vietnam I believe. My first one I bought from him even after I lubed it before install seized after about 5 miles. He was kind enough to send me another NOS guts setup minus the casing and glass. Ive since put 2,600 miles one it and its going strong with almost zero bounce with a new cable well lubed with a graphite based "grease"

 

Bumping this old thread in case anyone has any new info (and the thread above is dead) - has anyone uncovered any resources for schematics or parts to fix these old speedometers? Mine is out of a 1966 CJ5 Tux IV. It was given to be by the PO in a box and I was told that the one on the dash was new and from Kaiser Willys...so I'm not even sure what doesn't work on the OEM one.

 

Mechanical speedometers are quite delicate, like the movement of a watch. They have jewels that the the indicator needle swings on. The spiral spring is like the spring on the balance wheel of a watch - also very delicate. They work by generating eddy currents from the magnets on the needle arm. The aluminum cup spins and the currents from the magnets generate a torque on the needle axis, resisted by the spring. A very delicate balance. If you take it apart to clean it, be very careful you don't bend any of the parts, or stretch the spring.

 

Awesome advice guys thank you. What about the temp and fuel gauge components - anyone ever replace those if they are shorted out and unresponsive?