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big job · 11-27-2020, 08:33 AM

Dad says the speedometer would change when shifting the axle. Then you are missing
the little vacuum transmission back of the speedometer that keeps the speedometer
constant reading. Then later on this was electric which are around but good luck
finding a vacuum one usually were thrown away when failed. Symptoms of this is when
axle is in high range speedometer will read correct, in axle low range speedometer will
read about 10 mph higher.

11-27-2020, 08:33 AM	#14
big job Senior Member Join Date: Sep 2013 Location: Dighton, Mass Posts: 1,230	Re: 46 Stake truck rebuild Dad says the speedometer would change when shifting the axle. Then you are missing the little vacuum transmission back of the speedometer that keeps the speedometer constant reading. Then later on this was electric which are around but good luck finding a vacuum one usually were thrown away when failed. Symptoms of this is when axle is in high range speedometer will read correct, in axle low range speedometer will read about 10 mph higher.