True, alchohol (and some other solvents) will evaporate completely leaving no
alcohol residue. This presumes that in the final wash there is no oil in
solution.
Dishwasher powder is a pretty effective cleaner, and if rinsed with clean water
will leave no residue. Metal plating and aluminum anodizing require extreme
cleanliness and both processes typically use a caustic wash, follwed with a
water rinse as the final cleaning step.
I agree that oil contaminated linings shoiuld be replaced, in this case the
request was for thoughts to get past an inspection.
Jan Eyerman wrote:
> Brake linings are porous, the oil will get into the linings and effectively
> ruin them. However, in an emergency, cleaning will help. I use alcohol
> because it will completely evaporate off, almost all other cleaning
> material-including soap, will leave a residue.
>
> The drums can be cleaned with alcohol and should be fine.
>
> Jan
>
> Roger Gibbs <rgibbs@pacbell.net> wrote:
> Dishwashing soap (at least in the USA) is a caustic soap, when heated it
> makes an excellent degreaser. This will likely get the linings cleaner than
> using a solvent cleaning method. On the metal drums solvent cleaning would
> be
> my choice.
>
> Be careful though - it is possible to clean the surface of the linings and
> still have oil left in the subsurface. This oil may migrate to the surface at
> a later time and can significantly reduce the braking efficiency.
>
> If it were me I would replace the linings.
>
> -Roger
>
> lauri lehtinen wrote:
>
> > Voice from the distance (Finland) calling:
> > El Tonto stupido (unfortunately it was me personally) did not tighten brake
> > shield bolts enough (some were very loose) when changing differential
> > pumpkin.
> >
> > Now there is oil in at least right side brake drum and linings. I know it
> > burns out during time, but I have to drive straight to MOT (is it yearly
> > check made by officials?) and it is only about 4 km. Is there any other
> > methods than washing with organic solvent (heating?) to get that diff oil
> > out from the brake surfaces?
> >
> > Yes, and very muchas gracias from all help I have got from you during
> > thease years!
> >
> > yours
> > #orenzo Pamfletti
> >
> > #auri Lehtinen
> > Lehtipuu Oy
> > Kirkonkylantie 83
> > 00780 Helsinki
> > FINLAND
> > tel: +358 400 851988
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