Even if you are replacing the components, inspecting removed parts will give clues about the health of the entire system
Check brake Technicians are instructed to inspect various parts of the braking system but are often provided with precious little information thereafter, leading Rob Marshall to question quality parts manufacturers about checks that should be performed
BRAKES
In the quest for greater sales, you would have thought that parts manufacturers would prefer you to replace braking components blindly, rather than checking and refitting them, if found to be serviceable. Surprisingly, this is not the case. One reason is that a little extra time spent examining certain braking parts can identify issues with other parts of the system. While resultant extra work can boost revenue, it has the important role of enhancing vehicle reliability and proving to your customers that you are looking after not just their safety but also their financial interests.
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The Pads As AT detailed last year, (https://autotechnician.co.uk/ brakes-past-present-and-future/) the science behind brake friction material is quite awesome. Yet, technicians should not feel overwhelmed, when inspecting removed pads. As Comline
attests, checking that the remaining friction material has not fallen below the required specifications, using a digital calliper set, is important. Yet, look also for trends in wear patterns, by comparing the remaining friction material between the inner and outer pads, as well as those on the opposing axle side. LKQ Euro Car Parts advises that, on discovering uneven wear, technicians should recommend a full brake inspection to the customer. TMD Friction advocates inspecting the friction surfaces closely. Missing lumps, cracks between the backplate/friction material and additional crazing on the pad surface from heatrelated damage may point to binding. Should you suspect overheating, smell the surface to detect the pungent stench of burnt linings but avoid inhaling the dust.
