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Frame
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• Check movement of the piston in the hydraulic cylinder. Use the jog controls to operate the hydraulic
cylinder through its entire range of motion. Check for binding and abnormal noise. The piston should
move smoothly. Also, watch the load display in the controlling software. The load reading should
remain fairly constant as the piston moves. Increases and decreases in the load reading could
indicate that the piston is binding. If you notice any problems resulting from this inspection, contact
your local Instron Services department as directed on page 20 for immediate assistance.
• Inspect the hydraulic cylinder for signs of oil leakage as discussed in “Make daily checks of
system” on page 63. If oil leakage is discovered and traced to the hydraulic cylinder, contact your
local Instron Services department as directed on page 20 for immediate assistance.
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