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Old 08-07-2015, 09:03 PM   #1
PDW HOTRODS
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speedo / odometer

I have a 56 truck that the speedometer works but the odometer does not. Any ideas on how to fix? I thought they were tied togather and both would or would not work. Thanks.
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Old 08-08-2015, 08:35 AM   #2
Old Crow
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Re: speedo / odometer

The speedo is driven by a cable that spins a magnet, while the odo is gear driven off the same cable. Since the speedo works, you know the cable is good.
My guess would be a stripped gear on the odometer.
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Old 08-08-2015, 10:52 AM   #3
Russell Ashley
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Re: speedo / odometer

I have the same problem, my odometer has stopped too. Mine stopped when it got to a place where several of the digits should have rolled up. Unfortunately the only way to fix it is to remove the cluster, remove the speedometer, and repair or replace it.
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Old 08-08-2015, 03:18 PM   #4
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Re: speedo / odometer

unfortunately i've had my speedo cluster apart many times over the past year
no magic in there, other than the speedo itself
the odometer is a couple of gears and the numbered head

there are a couple of ways the odometer could stop working without any damage to the gears
there is a clip that holds the long brass gear in that is most likely your problem
take it apart and look at what has slipped out of place



i reset the odometer to the actual miles on my truk since the rebuild



there is also a member on here TBONE1964 that does speedo repair
i sent a speedo head to him for calibration
he lives in juntion city oregon and may be close to you

but... other than calibration the speedo/odometer is pretty simple
i thought i was being smart when i bought a new one when i rebuilt truk
cheap offshore junk is all there is available, i went thru 4 different new speedos before a member sent me an old head and i had it calibrated
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Old 08-09-2015, 01:40 PM   #5
SCHRUMGMC
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Re: speedo / odometer

Heck my speedometer doesn't work at all and the odometer doesn't either
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Old 08-10-2015, 05:50 AM   #6
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Re: speedo / odometer

Quote:
Originally Posted by SCHRUMGMC View Post
Heck my speedometer doesn't work at all and the odometer doesn't either
In that case I'd be checking out the cable.
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Old 08-10-2015, 11:53 AM   #7
SCHRUMGMC
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Re: speedo / odometer

I have a brand new one in there
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