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Dongfeng Military Truck Adjustment and Maintenance - Adjustment of Cummins and Common Faults - Common Faults and Exemption Methods of Engines (2)

Views: 5     Author: Site Editor     Publish Time: 2021-08-18      Origin: Site

4, the engine is insufficient

Fault mode

Method of exclusion

1, intake jam

Check air filters, intake pipes and clean or replace

2, boost pressure is insufficient

Repair or change exclusion

3, supercharger working abnormalities

replace

4, fuel oil return manifold throttle

Clear blockage

5, fuel quality difference

Relieve fuel, clean oil road, refuel

6, the oil housing is too high

Emissions to suitable oil surface

7, air in the fuel system

Tighten each joint, exhaust

8, the fuel supply system partially blocks

Inspection

9, the valve is not adjusted

Re-adjusted according to regulations

10, exhaust gas discharge resistance

Inspection

11, the accelerator pedal opening degree is not enough

readjust

5, the fuel consumption is too large

Fault mode

Method of exclusion

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

Check air filter, intake pipeline cleaning

2, poor fuel quality

Replace fuel as required

3, fuel pipeline oil leakage

Check and repair

4, injector atomization is poor (with black smoke)

Check adjustment fix

5, gas supply or oil supply is incorrect

Adjust the valve clearance and supply advance angle according to the regulations

6, boosting system pressure is insufficient

Check exclusion line and connection

7, supercharger working abnormalities

Check

6, engine oil consumption is too large

Fault mode

Method of exclusion

1, the cooling liquid is too low (water shortage)

Check to repair leakage coolant

2, water pump and fan belt 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 oil housing oil is too low or lack of oil

Check the oil surface, repair the oil, refuel

7, long-term use of ordinary water as a coolant

Cleaning water jacket, remove scale

7, engine oil consumption is too large

Fault mode

Method of exclusion

1, out of the oil

Inspection

2, add too much

Emissions suitable oil surface

3, oil cooler oil leakage

Inspection

4, turbocharger oil leakage into intake pipes or exhaust gas

Repair or replace the supercharger

5, the piston ring is unreasonable

Repair or replace (requires compression check)

This article is reproduced from: Dongfeng Truck Company Heavy Car Factory - \"Military Vehicle Dongfeng off-road vehicle Adjustment and Maintenance Manual\"

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