Dismantling/Repairing a Smiths Rev counter

[adam73bgt]

Hi all, ever since I've had my MG the rev counter has always stopped at around 3500rpm, the car is still gaining revs but the needle seems to stick, also when starting the car, it sometimes takes a couple of taps to get the needle to show the idle speed rather than 0 (the same tapping method gets it unstuck from 3500rpm as well)

So I'm thinking that taking it apart and giving it a bit of a clean should restore the full sweep of the rev counter, any tips for doing this? How fragile inside are they and is this a job I should be tackling myself?

Its like one of these (haven't got a picture of mine):



Any help is greatly appreciated

Thanks!

[93fxdl]

Haven't stripped an MG clock but have pulled a few others apart, to remove the front, you may be Lucky and it will release by twisting it, or you will have to lever it off. On the back you may find a loop of ( white ? ) wire, do not disturb this as afaik it is the calibration for the counter. If you wish to oil any bits, I would advise using a piece of fine wire as a dropper so oil only goes where you want it. Did find a how to on a scimitar site, a while back, will have a look to see if I can find it again
Ttfn Glenn

[93fxdl]

Any help ?
Ttfn Glenn

[adam73bgt]

Cheers for that, looks like getting it apart is fairly simple (so long as anything hasn't seized) will have to fetch mine out of the car and have a look

[Clamity]

The bezels are quite easy to get off without wrecking them. I put a jewellers flat blade screwdriver in between the body and the crimped over bit and start by stretching it out just a tiny amount, then repeatedly move the screwdriver along a couple of mm and do the same working all the way round the outside of the clock a few times. After a few minutes you will have stretched it enough that the ring can be popped off the front.

To put it back together I fold the ring back with a larger flat blade in a few spots round the edge. This seems to hold the glass securely enough to stop it rattling.