Common faults and elimination methods of Motor Grader
Motor grader is a special engineering machinery for ground leveling and ground treatment. The correct use and maintenance of the motor grader is the key to the normal operation of the motor grader and extending its service life. Therefore, the operator should have a certain understanding of the use and maintenance of the motor grader and the knowledge of the common faults and elimination methods of the motor grader.
一、Breakdown and reasons:
1. Loss of power.
A. Engine valve cover gasket leakage; B. Intake pipe leakage; C. Exhaust pipe leakage; D. Improper exhaust pipe installation causes back pressure; E. Improper lubrication and fuel system; F. Cooling water shortage; G. Fan belt too loose or too tight.
2. Poor fuel economy.
A. Insufficient air filtration; B. Improper engine timing; C. Poor quality fuel or oil; D. Poor cylinder compression; E. Poor installation of air filter; F. Poor maintenance of electronic fuel injection system.
3. Poor starting.
A. Poor maintenance of the starter; B. Intolerable wear of the spark plug; C. Lack of fuel; D. Electrical failure; E. Low battery voltage; F. Excessive fuel.
4. Abnormal vibration.
A. Improper balance of parts; B. Faulty bearings; C. Improper installation of transmission parts; D. Loose parts; E. Poor maintenance of wheels and tires.
5. Excessive oil consumption.
A. Improper clearance between cylinder and piston; B. Poor quality piston ring; C. Poor quality cylinder liner; D. Faulty valve stem seal; E. Excessive wear of crankshaft bearings; F. Lack of or too much cylinder head oil flow; G. Faulty piston.
6. Abnormal noise.
A. Loose fan belt; B. Poor quality gasket; C. Loose or cracked valve; D. Improper installation of fan; E. Loose or collision of parts.
7. Abnormal temperature increase.
A. Poor quality engine oil; B. Clogged radiator; C. Clogged oil passage in the engine; D. Faulty water pump; E. Low coolant level.
8. Poor braking.
A. Poor quality brake fluid; B. Poor maintenance of brakes; C. Faulty brake components; D. Abnormal foot pedal operation; E. Absorbed dust or dirt on brake components.
二、Methods for eliminating common faults of motor grader
1. Loss of power.
A. Replace the engine valve cover gasket; B. Check the intake pipe and exhaust pipe for leakage; C. Check the installation of the exhaust pipe; D. Check the lubrication and fuel systems; E. Check the cooling water level; F. Adjust the tension of the fan belt.
2. Poor fuel economy.
A. Clean up the air filtration system; B. Check the engine timing; C. Use the correct grade of fuel or oil; D. Check the cylinder compression; E. Check the air filter installation; F. Check the maintenance of the electronic fuel injection system.
3. Poor starting.
A. Check the maintenance of the starter; B. Change the spark plug; C. Check the fuel supply; D. Check the electrical system; E. Check the battery voltage; F. Check the fuel supply system.
4. Abnormal vibration.
A. Check the parts balance; B. Check the bearing; C. Check the installation of the transmission parts; D. Tighten all loose parts; E. Check the maintenance of the wheels and tires.
5. Excessive oil consumption.
A. Adjust the clearance between the cylinder and piston; B. Replace the piston ring; C. Replace the cylinder liner; D. Replace the valve stem seal; E. Check the crankshaft bearing wear; F. Adjust the oil supply of the cylinder head; G. Replace the piston.
6. Abnormal noise.
A. Adjust the tension of the fan belt; B. Replace the gasket; C. Fix the valve; D. Adjust the fan installation; E. Fix all loose or collision parts.
7. Abnormal temperature increase.
A. Change the engine oil; B. Clean up the radiator; C. Clean the oil passage in the engine; D. Replace the water pump; E. Check the coolant level.
8. Poor braking.
A. Change the brake fluid; B. Check the maintenance of brakes; C. Check the brake components; D. Adjust the foot pedal operation; E. Remove dust or dirt on brake components.