Shop Manual

20-15

Maintenance of Air Filter Element

★ The diesel used for engineering machinery always working in the badly condition that the

dust content in the air is very high. So it is require high filtering efficiency of air filter

elements and high sealing of the air inlet system. The insufficiency of air inlet volume will

not only directly affect the output power of engine, but also result in the carbon

accumulation dramatically inside the combustion chamber and air cylinder sleeve,

consequently quicken the wear of piston ring and cylinder sleeve until them were

damaged. The quality of the inlet air is not good, will also result in the early wear of

cylinder sleeve and piston assembly, and consequently reduce the service life of engine.

 Check the air inlet system

Check if the hose of the air inlet system has

crack, if the clamp has loosen or perforated.

Tight or change component when it is

necessary to ensure there has no air leakage in

the air inlet system.

Air filte

The maximum air inlet resistance of this kind

of air filter is 6.2 kPa. The maximum air inlet

resistance must be checked when the

supercharged diesel runs under rated full load.

Clean the dusts inside the dust collection

chamber every 100 hours’ operation. Remove

the main paper filter element and knock the

both ends of main filter element or use the

compressed air that the pressure is not over

0.5 MPa to clean it every 100～200 hours (it

can be adjusted properly depends on the dust

content in the workplace environment).

First blow air from the interior to the exterior along the paper fold, then blow air from outside

to the inside, finally blow air from inside to outside to remove the dust. Use the same method

in the maintenance condition above to maintain the safety filter elements.

★ No use the oil or water to clean the filter element is allowed.

★ It is need to change it if the damaged filter element is found or it is hard to remove the

dirt.

★ Conduct above maintenance every 50～100 hours’ operation in the working condition that

has severe powder.

★ The outlet end of air filter is equipped with KBZ-1 type air filter maintenance indicator.

The operator should maintain the air filter when the air filter is blocked.