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PostPosted: Fri Jan 06, 2012 8:31 am 
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848cc
848cc

Joined: Tue Dec 23, 2008 8:05 am
Posts: 76
Location: Central Coast NSW
Hello all
Having problems with speedo, it looks like the second digit in from drivers side is sticking each time it goes from 0-9, i have got it turning once but stopped again,could i try and blow any debris etc out with an air line? Any tips?
Cheers tsb


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PostPosted: Fri Jan 06, 2012 4:37 pm 
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998cc
998cc
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Joined: Tue Sep 06, 2005 6:20 pm
Posts: 637
Location: Melbourne
It is likely that the small indexing cog wheel which fits in the number drum is either broken or has some foreign material jamming it.

From memory these are small blue plastic cog wheels and often break a tooth off. This cog engages and locks and turns the next drum so that it changes when it gets to 9. You can use an old donor speedo of the same type for parts.
You can carefully take the whole drum apart to clean and inspect the components. See the diagram I made when I did one of mine. There are a few variations of the odometer drum but essentially are the same.
Image


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PostPosted: Fri Jan 06, 2012 4:41 pm 
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Joined: Wed Jul 21, 2004 10:32 pm
Posts: 19124
I know that I would pull it apart and play with it but for the average person I think it would be a good time to take the speedo to an instrument repairer and get the whole thing serviced.
There is a couple of parts that need cleaning and greasing.

There is a knack to pulling the speedo apart without destroying the spring that controls the needle.


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PostPosted: Fri Jan 06, 2012 7:45 pm 
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1275cc
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Joined: Thu Dec 21, 2006 11:50 am
Posts: 2639
Location: Bentleigh Melbourne Victoria Australia
If you want to support a mini enthusiast and mini racer you could send it to Howard Instruments in Heidelberg Heights. Roger does a great job and is in the mini club. Just a suggestion.

http://www.howardinstruments.com.au/

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