1. Engine

(l) The spare parts of Liugong excavator cannot be started. There is air in the diesel oil suction pipe of the engine. (2) battery power loss is large, should be charged. The starter should be replaced if damaged.

(2) Normal operation at idle speed, when the throttle shut off is generally diesel oil suction filter or pipeline blockage, should be cleaned.

2. Gearbox and torque converter system

(l) The operating pressure is zero or lower Check the oil level and add no.8 hydraulic transmission oil as required. (2) Check the oil absorption filter and fine filter, clean or replace. (3) Check the control valve and 4 paper pads, clean or replace. (4) check variable speed pump, disassemble or replace.

(2) a position with no pressure or low pressure Check the control valve and paper pad, clean or replace. (2) Check the corresponding two clutches, replace the damaged parts.

(3) The operating pressure is normal, but the grader does not walk check the safety of the gear selector and install the safety tube. (2) Check the gear selector and the corresponding circuit, and replace the damaged parts.

(4) Control pressure is normal, but the blocking disorder check the solenoid valve, and replace new parts.

(5) In addition to checking the oil level, it is also necessary to check whether the variable speed pump and inlet and outlet pressure are normal and whether the cooling system is in good heat dissipation condition. If necessary, adjust the inlet and outlet pressure and triangle belt, and clean the radiator.

Use model：grader4180