| 摘要 |
A screw jack, for raising the power piston of a diesel engine's control governor until the power piston firmly clamps the gap gage, is provided to maintain the piston in its full load position during the adjustment of the engine fuel pump racks to match the governor piston gage, this adjustment being done when the diesel engine is shut down and the start contactors blocked open or insulated. The screw jack contains a break joint which, in its fully operative clamping position, can be rendered instantly inoperative simply by breaking the joint of the jack manually, a result effected by a single karate-like sweep of the hand.
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