Re: Speedometer 1937 120

Posted by Bob J On 2023/10/13 18:29:28

A whirring noise sounds like dry bushings in the mechanism. It is not hard to open up and get some light oil into it. I sprayed mine down first with brake cleaner, used compressed air to blow it dry and blast away decades of dirt, and then using toothpicks carefully dripped oil into all moving shafts/gears. Be sure not to knock the centre plate askew and incur the needle shaft to rub on the central hole. You can also drill out the brass cap as Big Kev did to oil the felt inside that bore too. His image describing that location is below.
With the speedometer head off you can also pull the shaft/cable and give it a good cleaning and spread some lithium grease on it before sliding it back in.
Bob J

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  Oiling hole.jpg (164.92 KB)