[928uk] Sticky speedo

[Richard Armstrong]

Hi Paul
Don't dowse the internals with WD40, it will never work again!
A speedo works by generating a magnetic field which in turn 'draws' the 
disk to rotate against a spring. Any lubricant will gum it all up. There 
is probably a bit of dust, or some corrosion from condensation which is 
causing the disk to stick. Take it apart and clean as much as possible 
very carefully with a clean dry lint free cloth - don't take the needle 
off though

Richard
>Hi all, just a quick question to see if anyone else has had this problem
>and maybe a cure ? My speedo will stick on zero quite often until I tap
>the glass with my finger or I go over a bump. It does not always do this
>and the odometer runs even though the needle is showing zero.
>I'm tempted to take the instruments to bits, dowse everything in the
>back of the speedo with WD40 and hope for the best - any better
>suggestions gratefully received.
>
>Paul
>'84 928S2 Turquoise