原文传递
Brake Pedal Pulsation 2,000-4,000 Miles After Brake Service
| 题名： | Brake Pedal Pulsation 2,000-4,000 Miles After Brake Service |
| 正文语种： | eng |
| 摘要： | Manufacturers and the aftermarket brake industry have created many bulletins concerning rotor runout and how to correct it. However, we still receive calls daily on our technical help line concerning brake pedal pulsation and supposedly "warped" rotors. This typically takes place 2,000-4,000 miles after brake service. We will explain the reasons why checking rotor runout is so important when servicing brakes.Most vehicles since 1999 have a rotor runout spec of .002" In prior years, .007-.010 was typical. Brake pad composition was one reason all manufacturers tightened up the specs. The pads used in the 80s and 90s were primarily made of soft materials, including asbestos. These pads were very forgiving, with very little noise and usually didn't wear the rotors.Today's pads are typically semi-met or ceramic. If the rotor runout is more than spec, the constant pad to rotor contact at one small area will cause a thickness variation. This occurs without touching the brake pedal; just rolling down road. |
| 出版年： | 2022 |
| 期刊名称： | Motor age |
| 卷： | 141 |
| 期： | 2 |
| 页码： | 33-33 |
检索历史
应用推荐
