What are the functions and purposes of barring a vehicle?

[OLawson]

The primary function and purpose of barring a vehicle are to inspect its operational condition. Below are the detailed explanations: Barring procedure: First, the fuel supply should be cut off, and the start signal cable disconnected. Then, open the indicator cocks of each cylinder to blow out any moisture, oil, or impurities inside the pistons. Once it is confirmed that the diesel engine is in good condition, the diesel engine can be started. Before starting the diesel engine, it is essential to check the oil circuit, water circuit, air circuit, and electrical circuit related to the diesel engine. If no issues are found, the engine can be started. Machine pump barring: By barring the machine pump, check whether it operates smoothly without any jamming or abnormal noises inside, to prevent damage to the machine pump during startup or motor burnout due to excessive current. For some large units, barring is also used for warming up and lubrication before operation, preventing local overheating between the rotor and the body after startup, which could lead to body deformation.