Dongfeng Military Adjustment and Maintenance - By adjusting Cummins diesel common fault - Public engine failure and exclusion method (b)

1, enter jam

Check air filters, intake pipes and clean or replacement

2, improve pressure

Repair or replacement

3, supercharger working abnormalities

replace

4, fuel return manifold throttle

Cleaning

5, difference in fuel quality

Relieve fuel, clean oil road, come on

6, the fuel tank is too high

Emissions suitable for oil surface

7, air in the fuel system

Tighten each joint, exhaust

8. Partial block of fuel supply system

an examination

9, constantly adjust

Re-adjusted according to regulations

10, exhaust gas discharge resistance

an examination

11, the accelerator pedal opening degree is not enough

readjust

1, intake system blockage (mainly air filter, black smoke)

Check air filters, intake pipe cleaning

2, fuel quality is not good

Replace fuel as needed

3, fuel pipe oil leakage

Check and repair

4, injector fog (with black smoke)

Check adjustment fix

5, gas or oil supply is incorrect

Adjust the valve gap and supply front angle according to the regulations

6, improve system pressure is insufficient

Check exclude lines and connectivity

7, supercharger working abnormalities

Check

1, the coolant is too low (water shortage)

Check to repair leakage coolant

2, the water pump and the fan belt are too loose

Check to replace the tensioner

3, hose bending

Check

4, thermostat failure

Check

5, indicating the failure of the instrument

Check or replace

6, the fuel tank oil is too low or deficiency

Check the surface of the oil, repair the oil, come on

7. Long-term use of ordinary water as a coolant

Cleaning water jacket, delete ratio

1, oil

an examination

2, add too much

Emissions suitable oil surface

3, oil cooler oil leakage

an examination

4, turbocharger oil into intake pipe or exhaust gas

Repair or replace the supercharger

5, the piston ring is unreasonable

Repair or replace (requires compression check)