Hydraulic Gerotor Motor / Orbital Motor Repair & Service

The motor may not be receiving hydraulic flow or could have internal damage.  

Solution:   

• • • 1. Check for any blockages or leaks in the hydraulic supply lines.  
    • 2. Ensure that the hydraulic pump is operating properly.  
    • 3. Inspect the motor for any internal wear or broken components.

Reduced performance could be due to insufficient hydraulic pressure or flow.

Solution:

• Verify the hydraulic system pressure matches the motor specifications.
• Check for worn-out seals, which could cause internal leakage.
• Clean or replace clogged hydraulic filters.

Excessive heat may result from overloading or restricted hydraulic flow.

Solution:

• Ensure the motor is not overloaded or operating beyond its design limits.
• Check for blockages in hydraulic lines or the cooler system.
• Use the correct type and viscosity of the hydraulic fluid.

Leaks are often caused by damaged seals or worn bearings.

Solution:

• Replace damaged seals or O-rings.
• Inspect the motor housing for cracks or defects.
• Check and replace worn bearings if needed.

A drop in torque may be caused by internal leakage or worn components.

Solution:

• Inspect and replace worn gears or rotors inside the motor.
• Check for internal hydraulic fluid leakage.
• Ensure the hydraulic pump is providing adequate pressure.

Excessive vibration can result from imbalance, misalignment, or internal wear.

Solution:

• Inspect and correct any misalignment between the motor and connected equipment.
• Check for internal wear or damage to the gears and replace if necessary.
• Ensure the hydraulic fluid is clean and free of air or contamination.

Noise may result from air in the hydraulic system, cavitation, or worn components.

Solution:

• Bleed air from the hydraulic lines.
• Inspect the hydraulic pump for cavitation and resolve any suction line issues.
• Replace worn or damaged internal components.

Directional control valve or hydraulic flow issues might be the cause.

Solution:

• Check the directional control valve for blockages or malfunctions.
• Inspect hydraulic lines for correct connections and flow direction.
• Verify the control system is sending proper signals.

Contaminated hydraulic fluid or improper lubrication could be the issue.

Solution:

• Replace the hydraulic fluid with clean, high-quality fluid.
• Inspect and replace filters regularly.
• Ensure the motor is operating within its design parameters.

• Solution:

  • Perform regular maintenance, including fluid changes and filter replacements.
  • Monitor hydraulic system pressure and flow for abnormalities.
  • Use the motor only within its specified capacity and avoid overloading.
  • Inspect seals, bearings, and other components periodically for early signs of wear.