Door Lock Kit



MODEL: HITACHI, KOMATSU, SUMITOMO, KOBELCO, VOLVO, DOOSAN, CATERPILLAR, HYUNDAI ISUZU: 4BD1T, 4BG1T, 6BD1T, 6RB1T, 6SD1T, 6BG1T, 6WG1T,6HK1T, 4HK1T, 4JJ1T HINO: H06CT, EP100T, J05E, J08E MITSUBISHI:: 6D22T, 6D31T, 6D15T, 4D31T, 6D14T,6D22T KOMATSU: S6D95, S6D108 CUMMIN: 6BT, 6CT, S6D102, S6D105, S6D107E, S6D114, S6D125 DOOSAN: D1146, D2366, DB58 VOLVO: D8K, D4D, D4E, D12D, D5E, D6E >>Whatsapp us 011-11623216 to confirm the model and size. FREE catalogue on our website:

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If the door lock kit in an excavator or other heavy machinery fails to function properly, it can lead to several issues that affect security, safety, and convenience. Here are the common problems associated with a non-functional door lock kit:

1. Security Issues

  1. Unauthorized Access:
  • Theft Risk: A faulty door lock can leave the excavator vulnerable to unauthorized access and potential theft of the machine or valuable tools and equipment stored inside.
  • Vandalism: The inability to lock the door properly can increase the risk of vandalism, leading to potential damage and costly repairs.

2. Safety Concerns

  1. Operator Safety:
  • Entrapment Risk: If the door lock malfunctions while the operator is inside, it could potentially trap the operator inside the cab, posing a safety risk, especially in emergency situations.
  • Improper Securing: A non-functional lock might not secure the door properly during operation, increasing the risk of the door swinging open unexpectedly, which could be dangerous during machine operation or while transporting the machine.

3. Operational Inconvenience

  1. Accessibility Issues:
  • Difficulty Entering or Exiting: A malfunctioning door lock can make it difficult to open or close the door, causing inconvenience and delays in daily operations.
  • Manual Override: Operators might need to use a manual override or alternative method to secure the door, which can be time-consuming and cumbersome.

4. Increased Wear and Tear

  1. Forced Entry/Exit:
  • Damage to Door Mechanism: Repeated attempts to open or close a malfunctioning lock can cause additional wear and tear on the door mechanism, leading to more extensive and costly repairs over time.
  • Hinge and Frame Damage: Forcing the door open or shut due to a faulty lock can damage the door hinges and frame, leading to misalignment and further operational issues.

5. Weather Protection Issues

  1. Exposure to Elements:
  • Water Ingress: An improperly secured door can allow water to enter the cab, potentially damaging electronic components and upholstery.
  • Dust and Debris: A malfunctioning door lock can let dust and debris enter the cab, affecting the cleanliness and potentially damaging sensitive equipment inside.

6. Operational Downtime

  1. Maintenance Delays:
  • Repair Time: Addressing and repairing a faulty door lock can cause operational delays and downtime, impacting productivity and project timelines.
  • Inspection Requirements: Frequent issues with the door lock might necessitate additional inspections and maintenance checks, further disrupting regular operations.


A non-functional door lock kit in an excavator or heavy machinery can lead to security issues, safety concerns, operational inconvenience, increased wear and tear, weather protection issues, and operational downtime. Ensuring that the door lock kit is promptly repaired or replaced is crucial for maintaining the security, safety, and efficient operation of the machinery. Regular maintenance and inspection of door lock mechanisms can help prevent these problems and ensure smooth and secure access to the cab. 


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