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#1469334 Mon Oct 03 2022 02:42 AM
Joined: Dec 2008
Posts: 69
I have a 1950 3100 . It has the original speedometer with a new needle in it. The Odometer works OK, but the needle for the Speedo is stuck on 0. I have taken the unit out and removed the glass and chrome trim piece. When you spin the piece the speedo cable goes into the needle moves, but when you push in on that and spin it, the needle does not move?? It does push the needle and shaft out a little when you push on that speedo cable receiver. Any ideas on what I can do to fix this??

Thanks, Jerry

Jerry M. #1469335 Mon Oct 03 2022 02:47 AM
Joined: Oct 2021
Posts: 1,145
Did the speedometer work before installing the new needle? Why was the new needle installed.

Is the end of the cable square in cross section? Maybe it's rounded off and just spinning in the back of the gauge.

Last edited by Otto Skorzeny; Mon Oct 03 2022 02:50 AM.

1939 Packard Standard Eight Coupe (The Phantom)
1950 Chevrolet 3100 (Ol' Roy)
1956 Cadillac Coupe de Ville (The Bismarck)
1966 Oldsmobile Toronado (The Purple Knif)
1966 Ford Mustang (Little Red)
1964 Ford Galaxie 500 coupe
1979 Ford F-100
1976 Ford F-150 (Big Red)
1995 Ford F-150 (Newt)
Jerry M. #1469349 Mon Oct 03 2022 10:33 AM
Joined: Dec 2008
Posts: 69
The original needle was deteriorated badly.

The end f the cable is spinning as the odometer is working.

It is possible that the cable is pushing on the brass piece on the back of the speedo. At first I thought the needle was rubbing on the glass face, but it does not turn even out of the case when pushed on the back of the shaft.

It did work when I first put it together and ran the truck for the first few times, but then it worked occasionally and then quit all together.

Jerry M. #1469357 Mon Oct 03 2022 11:54 AM
Joined: Dec 2018
Posts: 1,981
Jerry m Someone commented earlier their nut was too tight and it stopped the hand,might loosen it a little.

Jerry M. #1469827 Thu Oct 06 2022 02:00 AM
Joined: Dec 2008
Posts: 69
I ended up making a thin spacer to insert between the brass input for the speedometer and the threaded part of the back of the speedometer. So far so good. It was about .008" and I made it a u shape to slide in there so I did not have to disassemble.

Moderated by  Justhorsenround 

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