How to solve the problem that the gear pump does not absorb oil after starting and the gear pump oil pressure is insufficient

Problem 1:Gear pump does not absorb oil after starting

Solutin：

1. Check the oil tank level to ensure it reaches the gear pump’s suction port.
2. Ensure the suction line is free from blockages or leaks and that all connections are tight.
3. Check for air in the gear pump and bleed the system if necessary.
4. Ensure the gear pump is rotating in the correct direction, adjusting according to the arrow marked on the pump body.

Problem 2: Loud noise during gear pump operation

Solution:

1. Check that the gear pump is securely mounted and that there are no loose components.
2. Check if the gear clearance is too large, and adjust or replace worn gears as needed.
3. Ensure the gear pump is well-lubricated and regularly add the appropriate amount of lubricant.
4. Inspect the suction line for air leaks or blockages to ensure smooth suction.

Problem 3: Insufficient discharge pressure from the gear pump

Solution:

1. Inspect the discharge line for blockages or leaks to ensure it is clear.
2. Check for internal wear in the gear pump and replace worn parts as necessary.
3. Ensure the gear pump’s speed and power meet the required specifications, adjusting motor speed or replacing the motor as needed.
4. Inspect the hydraulic system’s pressure control valve to ensure it is functioning correctly, adjusting or replacing it if necessary.

Problem 4: Severe leakage in the gear pump

Solution:

1. Check all seals for integrity and replace damaged seals as needed.
2. Ensure that the pump housing and piping connections are tight, securing all connections.
3. Inspect the gear pump shaft seal for damage and replace it if necessary.
4. Ensure the pump body has no cracks or other damage, repairing or replacing the pump if required.

Problem 5: Gear pump overheating during operation

Solution:

1. Check the temperature and viscosity of the hydraulic fluid to ensure the use of suitable hydraulic oil.
2. Ensure the oil tank and cooling system are functioning properly, cleaning or replacing the cooler if necessary.
3. Inspect the gear pump internals for contaminants or blockages, regularly cleaning the pump of debris.
4. Ensure the gear pump operates within its rated conditions and avoid prolonged operation under excessive load.