| 摘要 |
A hydraulic hand pump has a body with cover, inside the body suction and pressure valves and high pressure cylinder with plunger are placed, at that on the cover a lever is fixed by axis of rotation. The lever interacts with plunger through the pin. In the plunger and in the lever spherical depressions are provided, those are placed on one axis. Ends of the pin are rounded and one of those is placed in the depression of the lever, and the other one - in the depression of the plunger.
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