原文传递
Pedal pulsation caused by moisture buildup
| 题名： | Pedal pulsation caused by moisture buildup |
| 正文语种： | eng |
| 摘要： | A Ford Edge recently came into the shop with a complaint of high-speed pedal pulsation. The owner said the vehicle doesn't get used much and does a lot of sitting around in the elements. A quick look through the wheels didn't show any signs of concern. The rotor surfaces looked clean and smooth. The front brake pads showed plenty of life. However, once the wheels were taken off and the brakes were inspected, the problem was quickly found. After removing the caliper, we saw that the inboard pad seized in the caliper on both front wheels. Excess moisture caused rust buildup in the caliper bracket. This rust wasn't as prominent on the outboard pad because it received consistent airflow through the wheels. When looking at the life of the two pads, the outboard pad had plenty of life left on it. The inboard pad was almost worn down to the backing plate and had grooves on the friction surface (see image). The excessive wear was due to it seizing in the bracket. The pad was stuck in place up against the rotor, causing it to wear down at a quicker rate than the outboard pad. |
| 出版年： | 2021 |
| 期刊名称： | Motor age |
| 卷： | 140 |
| 期： | 5 |
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