Brake Repairs in Cairns

Brakes here do a harder job than the same brakes down south

Two things about driving around Cairns are hard on a braking system, and neither of them shows up on the odometer.

The first is the ranges. A long descent off the Kuranda or Gillies range is sustained braking, not the short stops a brake system is mostly designed around. Sustained braking puts heat into the rotors, the pads and, through the caliper, into the fluid. That is normal and the system is built for it. What it is not built for is doing it with fluid that has water in it.

The second is salt. Everything on the outside of a brake system is exposed, and on the coast it corrodes. The parts that suffer are not the ones people think about: it is the caliper slide pins, the hardware clips and the handbrake cables, all of which seize quietly and drag a pad against the rotor until it cooks.

Brake fluid is the one people skip

Brake fluid is hygroscopic, which means it pulls moisture out of the air, and it does that faster in humid air. Every year it sits in the car it gets a little wetter.

Water in the fluid lowers its boiling point. On a normal stop that does not matter at all. On a long descent, with heat soaking back through the caliper, wet fluid can boil, and boiling fluid puts vapour in a system that only works because it is full of liquid. The pedal goes long or goes to the floor, and then a few minutes later, when it cools, it feels completely normal again. That is why it so often gets dismissed.

It is testable. We measure the moisture content rather than going off the age of the car, and if it is fine we tell you it is fine. There is more on the mechanics of it in our note on brake fade on the Kuranda and Gillies ranges.

You get measurements, not a verdict

The most common complaint about brake work is being told the brakes are dangerous when the car felt fine.

So we measure. Pad material remaining and rotor thickness against the manufacturer’s minimum, both written down and given to you. From that you can see for yourself whether you are looking at work now or work in six months, and you can budget for it instead of being pressured into it.

If the pads have plenty left and the noise you rang about is something else, which it often is, we would rather find that out than sell you a brake job. A grinding noise that turns out to be a stone in a dust shield is a five minute fix and it happens more than you would think.

What a proper brake job includes

Replacing pads and nothing else is why brakes come back.

• Rotors measured, and machined or replaced where they are out of spec or unevenly worn.
• Caliper slide pins removed, cleaned and re-greased with the right grease, which is what stops the pad dragging and wearing on one side.
• Hardware clips replaced rather than reused, because they are what holds the pad square.
• Hoses and lines inspected for corrosion and perishing, which on coastal cars around Portsmith is a genuine finding rather than a formality.
• Fluid tested, and bled if it is being replaced.
• A road test and a bed-in, because new pads and rotors need a proper bedding cycle to work as they should.

Ring the workshop and describe what the brakes are doing, and when. A noise on the first stop of the morning that then goes away is a different fault from a noise that gets worse the longer you drive, and knowing which saves time on the hoist.