What causes the brake shoe wear alarm on the FAW J6?
2 Answers
The reasons for the brake shoe wear alarm on the FAW J6 are introduced as follows: 1. The brake pad has worn to the alarm position: The brake pad is equipped with a metal piece for alarm purposes. When the brake pad wears thin, the metal piece produces abnormal noise, indicating the need for replacement. 2. An alarm circuit is embedded between the friction material of the brake pad and the metal backing plate: When the brake pad wears to a certain thickness, it will wear through the alarm wire, causing an open circuit in the alarm wire, which then illuminates the brake pad warning light; another possibility is that this alarm wire has been abnormally damaged, resulting in an open circuit fault that triggers the alarm, rather than the brake pad actually reaching its wear limit.
When the brake pad warning light on the Jiefang J6 dashboard comes on, it's mostly because the pads have genuinely worn down to the warning line, and the sensor's metal strip directly contacts the hub to trigger the alarm. This is a situation I often encounter, especially with vehicles hauling heavy loads and frequently braking. Another possibility is that the sensor wiring harness is covered in oil and malfunctions, or that debris is stuck in the position of the wear indicator spring, causing a false alarm. Last month, there was a J6 that just couldn't clear the alarm no matter what, and upon disassembly, it was found that the apprentice hadn't properly connected the sensor plug during the last pad replacement, needlessly causing the driver to worry for 2,000 kilometers. Such issues shouldn't be taken lightly; it's essential to get them checked out promptly, as brakes are not something to be careless about.
