Used Zoomlion ZD220S/SH-3 Crawler Bulldozer
Product introduction
Zoomlion ZD220S/SH-3 bulldozer adopts the third-generation Cummins engine, which has strong power, low fuel consumption, environmental protection, energy saving and high efficiency. Adopting advanced hydraulic control technology and flexible shaft connection, the operation is light and flexible. The wetland triangular crawler is adopted, and the grounding specific pressure is small, which can meet the soft soil work sites such as wetlands, swamps, and landfills. Centralized pressure measurement, centralized lubrication, and automatic crawler tensioning device make monitoring and maintenance more convenient and efficient. The ZD220SH-3 wetland sanitation bulldozer is equipped with a sanitation shovel, which greatly improves work efficiency.
Product features
Efficient operation: turbocharged engine, large torque, strong power; advanced hydraulic transmission, automatically adapt to load changes; fast walking speed; large blade capacity; stable performance: Weichai engine, mature technology, stable and reliable; single-stage single-phase three-element hydraulic torque converter, long service life; tension buffer device, floating oil seal, more stable walking; high-strength alloy steel blade, ripper, stronger wear resistance. Comfortable and convenient: Hexahedral steel sealed cab, safe and low noise, wide field of vision; elastic shock-absorbing seat, toggle-style control, driving more comfortable; electronic monitoring system, automatic fault detection; rational design, convenient maintenance.
Bulldozer breakdown tips:
1. Unable to start
The bulldozer failed to start during the unsealing of the hangar.
After ruling out no electricity, no oil, loose or blocked fuel tank joints, etc., it is finally suspected that the PT fuel pump is faulty.Check the AFC air fuel control device, open the
After the air pipeline uses an air compressor to supply air to the intake pipeline, the machine can start smoothly, and when the air supply is stopped, the machine will shut down immediately, so it is concluded that the AFC air fuel control device is faulty.
Loosen the fixing nut of the AFC fuel control device, turn the AFC fuel control device clockwise with a hexagonal wrench, and then tighten the fixing nut. When starting the machine again,
It can start normally and the fault disappears.
2. Failure of fuel supply system
The bulldozer needs to be driven out of the hangar during a season-changing maintenance, but it cannot be driven.
Check the fuel tank, the fuel is sufficient; unscrew the switch at the lower part of the fuel tank, and then turn off the engine automatically after 1 minute; connect the fuel tank directly to the fuel pipe of the PT pump with the oil inlet pipe of the filter
Even if the fuel does not pass through the filter, the car still does not start when it is started again; the manual screw of the fuel cut-off solenoid valve is screwed to the open position, but it still cannot be started.
When reinstalling the filter, turn the fuel tank switch for 3 to 5 turns, and find that a small amount of fuel flows out of the oil inlet pipe of the filter, but the fuel will flow out after a while.After careful observation and repeated
After comparing, it was finally found that the fuel tank switch was not turned on. The switch is a spherical structure, the oil circuit is connected when it is rotated 90 , and the oil circuit is cut off when it is rotated 90 further.The ball valve switch does not
There is no limit device, but the square iron head is exposed. The driver mistakenly uses the ball valve switch as a throttle switch. After 3~5 turns, the ball valve returns to the closed position.
place. During the rotation of the ball valve, although a small amount of fuel enters the oil circuit, the car can only be operated for 1 minute. When the fuel in the pipeline is burned out, the machine will turn off.
