File talk:Think caliper.jpg
Think caliper.jpg[edit]
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I think the method shown here of preventing sticking brakes is potentially dangerous and to be avoided. The photograph appears to show WD40 being applied to the piston in a simple single- piston calliper. The oil will possibly/probably travel along the space between the piston and its bore by capillary action until it reaches the seal. It will then damage the seal and/or contaminate the brake fluid, either of which events would be very bad news indeed! Read your vehicle handbook and you will find emphatic warnings about avoiding allowing any liquid near your braking system except the specified grade of hydraulic fluid.
In my experience with the MK1 Ford Ka, which uses this type of calliper, the way to fix the problem of sticking brakes is to remove the calliper from the wheel hub, taking care not to strain the flexible pipe and take out the pads. It will be very obvious where the edges of the pads bear against the calliper from the rust and road dirt. Wipe off the grime and apply copper-slip grease to these surfaces; DO NOT get grease on the pad friction material or the brake disc! Refit everything and the difference in pedal travel and braking efficiency generally ranges between noticeable and amazing! — Preceding unsigned comment added by 188.222.237.23 (talk • contribs) 21:50, 10 July 2010 (UTC)
