Wholesale Liugong excavator parts manufacturer and supplier

Yes, we sell parts and have a repair team to offer support.
1. Software solution.
A. ECU & Monitor Reprogram
B. DPF Program Solution
C. Software refit

2. Engine Rebuild & Testing
Maintenance Team Support
A. ET for Caterpillar Diagnosis
B. Inline 6 for Cummins/Komatsu/Hyundai Diagnosis
C. IDSS for Hitachi/Isuzu/Case/Sany/Sumitomo/JCB/XCMG/Isuzu Truck Diagnosis
D. DX2/NEXIQ for Kobelco/Hino truck Diagnosis
E. Vocom for Volvo/Volvo truck/Penta Diagnosis
F. DST-i for KUBOTA DENSO Diagnosis

3. hydraulic Remanufacture & Testing
A. Offer new or rebuilt hydraulic pump & motor
B. Control valve & main pump repair & rebuild knowledge
C. Offer stable and cheap hydraulic test machines
D. All rebuild valves, pumps, and motors offer testing video for cilent

There are usually the highest and lowest oil level marks (MAX and MIN) on the inner wall of the oil filling port of each engine. This means that the oil level cannot exceed MAX or be lower than MIN.

A lower oil level, that is, a decrease in the amount of oil in the engine, will increase the oil load, causing the oil to become more seriously contaminated by heat, which not only weakens the lubrication performance, but also increases the fuel consumption. Because the less oil in the engine, the higher the oil temperature; and the higher the oil temperature, the greater the fuel consumption will be as the oil temperature rises. It is very dangerous to run the engine when the oil level is at the lowest point (MIN).

Keeping the oil level at the highest point (MAX) all the time will cause the oil to foam and lead to insufficient lubrication, resulting in serious wear. Foaming oil will also increase fuel consumption.

Therefore, it is recommended to keep the engine oil level between the MAX and MIN marks at a position close to one-third of the MAX.

After the newly purchased battery is injected with the liquid with the appropriate specific gravity, it should be placed for 6-8 hours to allow the liquid to penetrate the plates. When the temperature of the liquid drops below 30℃, it can be charged for the first time. The initial charge should be carried out in two stages. The charging current in the first stage should be lower than 1/10 (one tenth) of the rated capacity of the battery, and the time is about 25-35 hours. When the voltage of a single cell rises to 2.4 volts, the current is reduced by half and the second stage is entered, which takes about 20-30 hours. When the electrolyte emits strong bubbles and the specific gravity no longer rises, the voltage of a single cell rises to 2.6-2.75 volts and remains unchanged for 2-3 hours, it means that the battery is fully charged. During charging, the temperature of the electrolyte will rise, exceeding 40℃ in summer and 35℃ in winter. Charging should be suspended and recharged when the temperature drops below 30℃ to prevent damage to the plates and separators.

Abnormal noise may be caused by air entering the system, cavitation, internal component wear or hydraulic oil contamination.

1.The climate is cold in winter, the ambient temperature is low, the viscosity of the engine oil increases, and the friction resistance of each moving part increases, which reduces the starting speed and makes it difficult to start.

2.The battery capacity decreases as the temperature drops, which further reduces the starting speed.

3.Due to the reduction in starting speed, the leakage of compressed air increases, and the heat dissipation of the cylinder wall increases, which greatly reduces the temperature and pressure of the air at the end of compression, and increases the delay period of diesel ignition. In severe cases, it may even fail to burn.

4.The viscosity of diesel at low temperatures increases, which reduces the injection speed. In addition, the swirl speed, temperature and pressure of the air at the end of compression are relatively low, which makes the atomization quality of the diesel injected into the cylinder poor, making it difficult to quickly form a good combustible gas with the air and ignite and burn in time, or even fail to ignite, resulting in difficulty in starting.