| 摘要 |
A spring brake actuator (10), with a large-force compression spring (82) in a second spring chamber (78) of the housing, has vent openings (100) in the housing communicating with the second spring chamber (78). A filter assembly (134) covers the vent openings (100). Weep holes (62, 104, 102, and 100) in a sleeve (50) of a push rod (18), in a spring brake actuator rod (84), and in a spring brake housing portion (68) together permit fluid compressed in a first service brake chamber (30) to flow through a conduit defined by these weep holes out of the brake actuator (10) wherein it is filtered by the filter assembly (134).
|
