Today almost every construction company has a truck crane at its disposal. Whether it is its own or rented unit of equipment, Russian equipment or German Liebherr LTM series equipment, in case of its failure, the crane operator has to eliminate many malfunctions on site.
One of such malfunctions includes insufficient speed of crane operations. In this case, the machine works only with small loads. A possible cause of the malfunction may be a leak in the hydraulic system. In this case, the sealing rings must be replaced. If the cause is a misadjustment of the motor control drive, the crane operator must adjust the drive after checking its speed.
Increased leakage in the hydraulic motor can also cause deterioration of the crane's performance. In such a situation, the pump (hydraulic motor) should be replaced. Obvious malfunctions in the operation of the truck crane include failure to perform the operation when turning the winch control handle to the operating state. If the cause of the malfunction lies in a violation of the brake adjustment, it must be adjusted. If when checking the valve BH1, the crane operator notices that it is not closed, the valve is closed with a key. Problems in the operation of the machine are also observed when the brake valve orifices are clogged or their setting is disturbed.
During external inspection, the crane operator may notice that there is insufficient working fluid in the hydraulic tank. To prevent excessive heating in the hydraulic system, the fluid is topped up to the normal level. Otherwise, the crane may become inoperable. If the working fluid in the hydraulic system leaks in the connection points of pipelines, then this fault can be eliminated after external inspection.
If damage to seals is detected, they are replaced, and in case of poor tightening of screw connections, they are tightened. Similarly, such a malfunction as oil leakage at the joints of the hydraulic distributor is eliminated, only in this case it is not the threaded connections that are tightened, but the studs pulling the sections together. During long and continuous operation of the truck crane, a situation can be observed when the number of engine revolutions decreases. The main cause of the malfunction is revealed by external inspection - stretched rope of the engine fuel control, the length of which is adjusted by the crane operator.
There may also be a situation when after pressing the fuel supply control pedal, it does not return to its original position. The malfunction occurs due to a broken or weakened pedal spring, the replacement of which helps to cope with the problem. In case of malfunctions in the operation of special equipment, with which the crane operator is unable to cope, it is necessary to seek the help of specialized repairmen.
If damage to seals is detected, they are replaced, and in case of poor tightening of threaded joints, they are tightened. Similarly, such a fault as oil leakage at the joints of the hydraulic valve is eliminated, only in this case it is not the threaded joints that are tightened, but the studs tightening the sections. During long and continuous operation of the truck crane, a situation can be observed when the number of engine revolutions decreases. The main cause of the malfunction is revealed by external inspection - stretched rope of the engine fuel control, the length of which is adjusted by the crane operator.
There may also be a situation when after pressing the fuel supply control pedal, it does not return to its original position. The malfunction occurs due to a broken or weakened pedal spring, the replacement of which helps to cope with the problem. In the case of
