Repair of Electric Motor P-21 (P-22)

The P-21 (P-22) electric motor, installed on the TGM4 diesel locomotive, is a crucial component that powers various locomotive systems such as drives and pumps.

Its reliable operation is critically important for the effective performance of the locomotive.

Key Stages of Repairing the P-21 (P-22) Electric Motor:

1. Removal of the Electric Motor:

• The electric motor is carefully removed from the locomotive, adhering to all safety measures.

• Before removal, all electrical and mechanical connections must be disconnected.

2. Cleaning and Initial Diagnosis:

• The electric motor and its components are cleaned of dirt and contaminants.

• Initial diagnostics are performed to identify visible damage and wear.

3. Disassembly of the Electric Motor:

• The motor is disassembled into its main units and parts for detailed inspection.

• Special attention is given to the condition of windings, bearings, brushes, and commutators.

4. Assessment of Component Condition:

• Measurements of critical parameters are taken, such as winding resistance, brush wear, and the condition of commutators and bearings.

• Components that need replacement or repair are identified.

5. Repair and Replacement of Parts:

• Worn or damaged parts are replaced with new or refurbished ones.

• Repairs are made to windings, brushes and bearings are replaced, and commutators are cleaned and polished.

6. Reassembly of the Electric Motor:

• The electric motor is reassembled in accordance with all technical requirements and standards.

• All connections and units are checked for compliance with standards.

7. Bench Testing:

• The motor undergoes bench testing to verify its functionality and compliance with operational characteristics.

• Parameters such as power, current, and vibration are checked.

8. Installation on the Locomotive:

• The repaired electric motor is reinstalled on the locomotive.

• All necessary electrical and mechanical connections are made.

9. Operational Testing:

• After installation, the motor is tested under real operating conditions on the locomotive.

• Motor performance is checked in operational conditions.

Importance of Regular Maintenance for the P-21 (P-22) Electric Motor

Regular maintenance and timely repair of the P-21 (P-22) electric motor are critical for maintaining the reliable and efficient operation of the TGM4 diesel locomotive. Delays in maintenance can lead to reduced efficiency, increased operating costs, and potential failures.

Repairing the P-21 (P-22) electric motor is a comprehensive process requiring highly skilled specialists and specialized equipment. High-quality repair work helps extend the motor’s service life and enhances the overall efficiency of the locomotive.

ZTRZ performs repairs on P-21 (P-22) electric motors. For more information, please contact our managers.