Specifications

GOLDCUP CONTROLS SERIES 600
Maximum leakage with control on center:
2.0 gpm (7.6 l/m)
Minimum leakage with control on center:
1.0 gpm (3.8 l/m)
Maximum leakage with control off center:
35 cu. in/min or .15 gpm (574 cm3/min. or 0.57 l/m)
9. Unload the pump. Stroke pump above and below center. Control should operate
smoothly. Brake pressure should drop to case pressure each time control is on center,
and it should indicate servo pressure as soon as input shaft is rotated CW or CCW
from center, per step 7.
10. Release control when pump is off center. Pump should return to center. Repeat
several times in each direction and at different pressures from 200 to 5000 psi (13.8 to
345 bar)
11. Remove needle valve from bypass exhaust port and install exhaust line.
57
FIGURE 6B
HYDRAULIC STROKER
WITH BRAKE AND BYPASS VALVE