What if the excavator can't start?

Old drivers who have been through many battles are bound to encounter many problems in their daily work. Most of them can make do with it, and then they can be maintained at rest. The most troublesome thing is that the excavator can't catch fire and can't start. At this time, the excavator was as disobedient as the uncle, and the project was robbed behind. Excavator masters must be anxious to get angry, right? Don't worry, Bian Xiao taught us nine ways to make our excavator fly fast. Excavators and forklift drivers specialize in hunting the driver market (wx.5 1pj.cc)!

First, the circuit

There are many reasons why excavators can't get a taxi. Bian Xiao encountered the most common reason is the circuit. So how to judge whether the circuit causes a taxi failure?

The main reason why you can't get a taxi is that there is no response when the ignition switch is turned on or the speed of the starting motor is too low, so you will feel powerless. If these two phenomena can't hit the car, it can be roughly judged that there is something wrong with the starting circuit. So, how to check?

Second, check the battery pile head.

Check the circuit from the source, first check the battery pile head, clean the battery pile head, and then tighten the pile head screw. Bian Xiao failed to get a taxi several times before because the battery pile head was loose, resulting in poor contact and insufficient voltage. Conditional car owners can measure the battery voltage with a multimeter voltage range.

If there is nothing wrong with the battery, the next step is to check the circuit. Check along the battery circuit to see if there is any open circuit or loose connector.

Third, check the fuse box of relay box.

Next, check the starting relay and fuse box, open the relay box to see if the connector is loose, and then open the fuse box to see if the starting circuit fuse is blown.

Of course, the failure of the starting motor or generator will also lead to the failure to get a taxi. During this period, the failure of the generator will cause the generator to fail to generate electricity normally and the battery power cannot be replenished, which will lead to the low speed or non-rotation of the starting motor.

Fourth, the oil circuit.

In addition to the circuit, the oil circuit is also a common reason for not getting a taxi. So, how to judge whether there is a fault in the oil circuit?

If the strong rotating sound of the starter motor can be heard when the starter key is unscrewed, and there is no abnormal mechanical conflict sound inside the starter, then it can be roughly judged as the cause of the oil circuit. The oil circuit view of the direct injection vehicle is simpler than the circuit, and it is more complicated to look at the starters of some electronically controlled high-voltage rails. Generally, it can be seen from the following steps.

Verb (short for verb) Check whether there is enough fuel.

First, check whether there is oil in the tank. Maybe everyone will think this step is incredible, but in fact, there are not a few users who can't get a taxi because there is no oil in the fuel tank.

For vehicles with prominent fuel gauge, the fuel quantity in the fuel tank can be investigated through the fuel gauge, but Bian Xiao argues that it is better to check whether there is enough fuel in the fuel tank through the fuel tank level gauge at this time, or open the fuel tank cover. The fuel gauge will also be faulty.

Six, the oil-water separator water

After confirming that there is diesel oil in the fuel tank that can meet the ignition requirements, the next step is the oil-water separator. In fact, many owners do not have the habit of discharging water to the oil-water separator every day. If the quality of engine oil used is not high, it may not be started because there is too much water in diesel oil.

Oil-water separators generally have red buoys, the density of which is between diesel oil and water, so they will float on the water and be in diesel oil. When the buoy of the oil-water separator is in the center, it is necessary to loosen the drain bolt at the bottom of the oil-water separator in time to release water, and every oil-water separator should do this.

Seven, engine exhaust

If you still can't get on the bus after eliminating the cause of excessive moisture in diesel oil, the next step is to check whether diesel oil is mixed with air. First, find the direction of the hand pump. Different brands of hand pumps are installed in different directions, some are installed near diesel pumps, and some are equipped with electronic pumps, which do not need manual exhaust. At present, hand pumps of excavators are mostly installed above the oil-water separator. Unscrew the bleeder bolt next to the oil pump and press the hand pump by hand until the bleeder bolt is filled with diesel oil.

Under normal circumstances, you can get on the bus after checking the circuit and oil circuit. If you still can't get on the bus at this time, you must consider mechanical reasons.

Eight, mechanical problems

If there is no problem by checking the circuit and oil circuit, it may be a mechanical problem of engine attack.

Generally, the probability of mechanical failure of diesel engine is relatively low, but once mechanical failure occurs, it is necessary to overhaul the engine. The common mechanical faults of the engine include cylinder pulling, tile burning and cylinder collision. Generally speaking, the mechanical failure of the engine is premonitory, such as the engine suddenly fails to work during normal work, or black smoke or abnormal noise during work.

Nine, maintenance starter

Most mechanical problems occur when the starter is working, and the probability of mechanical problems when the cold car is started is low. Moreover, the mechanical problems of the starter of general excavators need to be dismantled and repaired by hoisting the starter. It is recommended to find after-sales accessories or professional starter repairmen for maintenance.

In fact, the problem that the excavator can't hit the car is not serious. Many times it is because it has not been launched for a long time, but this consequence is more annoying than other minor problems.