How To Use Crawler Bulldozers not Prone to Failure?

Oct. 27, 2020

1. Variable speed and forward and backward

When shifting into gear, first push the throttle handle forward to the low-speed idling position, and then push the main clutch lever to the forefront to separate the main clutch. Due to the action of the small brake in the main clutch, the power input shaft of the transmission stops rotating . At this time, you can correctly move the shift lever to the required gear, and then put the forward or backward lever to the forward or backward position. After the gear is engaged, pull the throttle handle backward to increase the engine speed, and connect the main clutch smoothly, and the bulldozer starts to drive.

When the bulldozer is driving, the main clutch control lever should be pulled to the rearmost position, not in the half-engaged position. Because the half-engagement of the main clutch will aggravate the friction lining wear.

The Crawler-Type Bulldozer transmission generally has 5 forward gears and 4 reverse gears. The advance and retreat rod can change the direction of travel of the bulldozer.

When the bulldozer is in operation, it should run at the highest speed possible to improve the efficiency of the operation. However, the driver should always pay attention to whether the engine is running normally, and if the engine is overheated and the exhaust is emitting black smoke, the speed should be appropriately reduced.

2. Turn

When steering while on the move, the steering clutch lever on the steering side can be pulled back to separate the steering clutch, so the speed of the crawler on the corresponding side slows down and the bulldozer starts to turn. If you want to make a sharp turn of the bulldozer, in addition to separating the steering clutch, you should also step on the corresponding brake pedal. Generally, sharp turns are allowed only when running in the first gear. When the brake is not in use, the foot should not be placed on the brake pedal, otherwise it will cause the brake belt to wear and increase fuel consumption.

When the Bulldozer is turning, you should step on the brake pedal steadily to avoid jumping when turning. After the turn, the brake pedal should be released first, and then the joystick should be released. If the turning radius is large, there is no need to step on the brake pedal. When you don't want it, don't turn the bulldozer on the spot at high speed to avoid accidents caused by track derailment.

3. Driving on the ramp

Different types of bulldozers have different climbing abilities, and the slope and terrain that the bulldozers of the same structure can adapt to are different. The driver should be familiar with the climbing limit of the model used to avoid landslides due to insufficient up and downhill ability.

Before going uphill, you should choose a suitable gear according to the terrain, the size and length of the slope, and you are not allowed to change gears during the climb. When going uphill, the bulldozer should run at a vertical angle to the side of the mountain slope, and lateral driving is not allowed on steep slopes; the blade can be lowered appropriately so as not to affect the line of sight, and in the event of a landslide, the blade can be quickly landed on the ground to help the bulldozer Braking; If the engine stalls on the way uphill, stop the fuel supply immediately, lower the blade and brake urgently. When the machine cannot be stopped on the slope, the reverse gear should be shifted slowly to the bottom of the slope, and then start to persuade; if the fuel supply is not stopped and the forward gear is slid down, the reverse power will be transmitted to the engine and cause reverse fire. Cause the air filter to spray oil outward. In case of fire in the reverse direction, you should quickly turn off the throttle and brake the bulldozer. Before restarting, check whether the shift lever is in the neutral position.

Crawler-Type Bulldozer

Crawler-Type Bulldozer

4. Through cliffs or rocky beaches

When bulldozers need to pass obstacles such as large soil packs or cliffs, they should drive up slowly at a low speed. When it reaches the apex, the moment the fuselage is about to tilt forward, the clutch should be quickly disengaged, the front of the bulldozer should slowly land on the ground, and then the clutch should be engaged to continue forward. Do not cross obstacles obliquely, and do not pull the steering rod when driving over obstacles.

When passing through a rocky beach, you must choose a route in advance, drive through it as much as possible, and drive with low gear and low throttle. Driving and making sharp turns on bumpy rocky beaches with high gear and high throttle are not allowed.

5. Self-rescue by trapped car

When bulldozers are engaged in bulldozer operations in areas with extremely high water content or in muddy areas after rain, vehicle trapping is likely to occur during inspection. There are two ways to save yourself after a car is trapped.

(1) If the bulldozer is not too deep to the front of the bulldozer on flat ground, you can manipulate the bulldozer control lever, use the hydraulic blade to lower the nose to push down the tail; then manipulate the bulldozer control lever to make The hydraulic blade is lifted to lower the nose and reset the tail, and then put the bulldozer in reverse gear I, properly increase the throttle, block the main clutch, and make the bulldozer back a short distance, then quickly step on the brake pedal and separate Main clutch lever. With so many repetitions, the trapped bulldozer can be driven backwards smoothly.

(2) If the trapped bulldozer cannot be driven out backwards by the above method, one end of the steel rope can be fixed to the tree or pile, and the other end of the steel rope can be fixed on one or both of the crawlers of the bulldozer, and then Start the engine, put on the reverse gear I, slowly rotate the crawler, so that the steel rope is wound on the crawler to drag the bulldozer out.

If you have more questions, please contact the Crawler Dozer Supplier

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