| 摘要 |
<p>A brake system (10, 32) is provided, the brake system (10, 32) having a brake valve (14) having a first mode and a second mode. A retractor (16, 26) is in fluid communication with the brake valve (14), and a brake assembly (118) is in fluid communication with the retractor (16, 26). When the brake valve (14) is in a first mode, the brake assembly (118) engages, and when the brake valve (14) is in a second mode, the brake retractor (16, 26) disengages the brake assembly (118) via a fluid vacuum.</p> |
