| 摘要 |
An actuating cylinder assembly for a vehicle drum brake assembly which comprises a cylinder which has an internal chamber within which is located a piston with this piston to be moved by entry of pressurized fluid within the internal chamber. An actuating shaft has an inner end which is mounted within the internal chamber and connects with the piston and an outer end which extends exteriorly of the cylinder. The outer end is adapted to engage with the drum brake unit of a drum brake assembly. A first seal assembly is located between the cap and the cylinder and the second seal assembly is located between the actuating shaft and the cap.
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