Winter is coming soon. Due to environmental protection requirements, some construction projects in the Northeast region may be suspended, and construction will continue after the beginning of spring next year. Therefore, some construction machinery and equipment must enter the "cat winter mode", and the bulldozer may not start due to long parking. Take a Yutong Heavy Industry GJT112 bulldozer that has been unable to start during the hangar unsealing process as an example to explain one of the reasons for the failure and the countermeasures.

Yutong Heavy Industry GJT112 bulldozer is equipped with Chongqing Cummins M11-C225 diesel engine. After a detailed inspection, the maintenance master ruled out no electricity, no fuel, loose or blocked fuel tank joints, etc., and finally suspected fuel pump failure, and checked AFC air fuel. Control box device, after opening the intake pipe and supplying air to the intake pipe with an air compressor, it starts normally when the air supply is stopped, and the engine immediately turns off. Therefore, it is determined that the AFC air fuel control device is faulty. Loosen the nut of the AFC fuel control device, turn the AFC fuel control device clockwise with an Allen wrench, and then tighten the fixing nut. The start is normal again, and the fault disappears.

The above is just one of the reasons for the failure. The bulldozer cannot start normally due to many factors. Pay attention to this website to share more bulldozer knowledge!