Re: SPEEDO

Posted by Bob Carabbio on July 05, 1998 at 08:40:59

In Reply to: SPEEDO
posted by J W on July 05, 1998 at 00:31:38

The normal problem is that the lube is dried out making everything stiff which, of course, breaks the cable.

There should be little or NO drag to the main drive shaft.

The best (longest lasting) way to deal with the situation is to disasemble the unit, clean it thoroughly, re-lube and re-assemble it. There are two cotton wicks that feed oil to the driveshaft which are behind brass driven in plugs. these shgould be removed, cleaned and soaked in light oil also. The odometer shoud also be disassembled, cleaned, and re-assembled with a touch of light oil on the shafts and segment gears.

Wholesale soaking will probably loosen the mechanism, but won't clean out the garbage that's packed around the shaft causing rapid wear if it's not cleaned.

If the numbers on the speed cup, and odometer drums are in acceptable shape. disassembly / cleaning / re-assembly wil do the trick.

Check the hair-spring on the drum for corrosion or breakage.
Hair springs are available, but hard to handle for those of us with large fingers and no watchmaker's tools. Don't oil the ends of the drum shaft, and don't tighten them to eliminate all play - they shoud be a bit sloppy.

I've done a couple of speedos successfully so it's not brain surgery - just fine fussey work.Parts are available for Stewart-Warner, Northeast and Waltham units.




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