| 摘要 |
An adjustment member having an end cap with threads thereon that match threads on the hub of a movable wall in a vacuum brake booster. The end cap has a plurality of projections located on its peripheral which allow a tool to rotate the end cap with respect to the hub and establish a space relationship between the hub and plunger to define a gap between said plunger and resilient member. The gap delaying the engagement of the resilient member and plunger until after a predetermined output force develops across the wall. The end cap has a central opening through which the reaction disc is thereafter communicated to oppose movement of the plunger by an operator input force during a brake application. |
