FAULT HUNTER / 09
Machine stops under load
LET US START WITH THE EXPERT
Moving without load and carrying a load are different. Let us consider pressure and flow together.
Now continue with technical diagnosis using safe observations.Loading diagnostic path…
Other possible causes and technical explanations
Possible causes to examine for this symptom
These causes are preliminary assessments. The same symptom can have different causes in different circuits.
Pressure reaches the operating value; examine load, effective area and mechanical resistance.
How to check: Compare the existing gauge under load and without load. A qualified technician should compare load, effective piston area, pump flow and motor power with design data.
Possible solution: Correct confirmed overload or mechanical binding. Repair a component if pressure or flow loss is verified. Any required capacity change needs a new engineering assessment.
Open the related lesson →Pressure loss under load may involve pump flow, unloading paths or internal leakage.
How to check: Compare the existing gauge under load and without load. A qualified technician should compare load, effective piston area, pump flow and motor power with design data.
Possible solution: Correct confirmed overload or mechanical binding. Repair a component if pressure or flow loss is verified. Any required capacity change needs a new engineering assessment.
Open the related lesson →The fault also occurs without load; examine mechanical binding, measurement location and controls.
How to check: Compare the existing gauge under load and without load. A qualified technician should compare load, effective piston area, pump flow and motor power with design data.
Possible solution: Correct confirmed overload or mechanical binding. Repair a component if pressure or flow loss is verified. Any required capacity change needs a new engineering assessment.
Open the related lesson →Pressure is not building; examine the common supply, unloading path and controls.
How to check: Compare the existing gauge under load and without load. A qualified technician should compare load, effective piston area, pump flow and motor power with design data.
Possible solution: Correct confirmed overload or mechanical binding. Repair a component if pressure or flow loss is verified. Any required capacity change needs a new engineering assessment.
Open the related lesson →