Page 48 - The Tyreman 2020 - 4
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of this wear damage, or minimising it, by providing appropriate lubrication at the contact surface points.
2. Isolation
The noise behaviour of a brake system is a complex interaction between all parts of the brake; the pads, caliper, rotor, and often the suspension components. When several components go into resonant vibration together, a positive feedback system will be de- veloped accordingly and subsequently, leading to brake noise.
One strategy for avoiding brake noise is to isolate the pads from the caliper. Decoupling the caliper from the pads adjusts the dy- namics of the brake system, changing the noise properties.
Applying lubricant between the backplate of the pad and the pis- and decouple a system resonance.
Many Japanese OEM pad manufacturers use multi-layer clip-on shims the OE shims are to be reused on an aftermarket brake job, then the grease should be replenished with a suitable brake lubricant.
3. Caliper Slides / Pins
The guide pins of a sliding caliper require lubrication to operate properly, allowing the caliper to centre over the rotor, and adjust to accommodate pad wear. If the pins are not lubricated, pads may drag on the rotor leading to overheating, rapid wear or shudder. Whenever the pads are replaced, each caliper should be inspect- ed and tested, and all sliding components lubricated.
Bendix provide the following guidelines for correct lubricant application;
2.隔离
3. 卡钳滑轨/夹
4. 应用
New Caliper
Brand new caliper with OE grease on the slide pin. This should be replenished when the pads are replaced to ensure the caliper can slide freely for the life of the brake job.
Caliper Bolt
Caliper bolt should be lubed when re-assembled.
Caliper
Apply lubricant to the abutment slides of the caliper, so that the pad can slide freely without jamming or causing wear.
Used Caliper
shims before re-assembly.
Lubricant Application
isolate the pad and break resonant coupling between the pad and caliper.
Japanese OE Pad
Japanese OE pad with ith multi-layer shim. Replenish the grease between the shim layers if they are to be re-used.
48 truck & bus news 2020/4
