FIELD: repairing and building works, mounting-dismounting operations and rescue works.
SUBSTANCE: manual tool includes rigidly joined one with other hydraulic cylinder, hydraulic pump with plunger pairs of high and low pressure, reservoir for working fluid and working organ joined with rod of hydraulic cylinder. High and low pressure plunger pairs are mounted separately. High-pressure plunger pair is mounted in cavity of plunger of low-pressure plunger pair with gap providing possibility for radial motion of plunger pairs one relative to other.
EFFECT: enhanced operational reliability of pump module and the whole tool.
2 cl, 2 dwg
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