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CB400/4 Front Wheel Speedo Drive

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TrickyMicky:
I stand to be corrected, but when I replaced my re-built front wheel, I noted that the grease in the speedo drive was black, and had the texture of something like a graphite grease. This seemed logical to me as the worm type drive has a sliding action against its partner. Graphite grease is specifically for sliding surfaces only, so don't go putting a little bit extra in, the excess may well work its way to the wheel bearing, and because it's so slippery, the balls in the wheel bearing don't turn but skid. Not Good!

THUNDERDOWNUNDER:
Well thanks for the info guys . I got the little bugger off with a little help from a Vice and Rubber mallet. Cleaned all the bits in Kero bath .  Now has anyone had the worm drive out or is it better to leave alone ?  The Oil seal seems OK at the back of the drive so wondering weather to just grease up from there  ? The graphite lube is good to know as well ! All this from a flat tyre Ha! Hope to be riding by the weekend fingers crossed .

SeanFD:
Congratulations! A littlebit of hammer/mallet assisted persuasion goes a long way!  :D

The oil seal you can prize out with a big flat bladed screwdriver; then you can really clean out the grease that will be hiding behind it. You can reuse the seal. Underneath you’ll find a gear wheel and a shim (or two).

The worm drive I would leave in place. It is a bugger to get out requiring the removal of a tiny grub screw and much angst as the plug in the end is splined and very tight.

Nearly there.

THUNDERDOWNUNDER:
Things are looking up now . Got the newinertube in and the tyre on Speedo Drive graphite grease up tomorrow . Sorry but worm drive is staying in place . Brake disc all shiny and ready for bolting on ..Weekend looking good for a ride . Watch this space !

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