Page 464 - Foton Workshop Manual - Auman EST-M

DI - 410 Diagnosis - Mechanical fault diagnosis
Comprehensive fault of entire vehicle

Failure phenomenon list

Failure phenomenon Possible reason Failure elimination
Check the battery and replace it if
1. Battery voltage too low
necessary
Clean the battery and tighten the
2. Battery cable loose and corroded
connection
Check the starter and replace it if
The engine fails to start 3. Starter failure
necessary

4.Fuel filter blocked and fuel system too much Clean the fuel system and replace the fuel
impurities filter
Check relevant electric parts. Replace
5. Other relevant electric parts working abnormal
them if necessary
1. Valve timing not correct Check the valve timing

2. Cylinder gasket leaking Replace the cylinder gasket
Measure the cylinder pressure. If
3. Cylinder pressure value too low
necessary, perform service
Check the valve and valve seat. Replace
4. Valve stem seal no good
Engine dynamic not sufficient them if necessary
5. Exhaust system exhausting not smooth Check the exhaust system
6. Not adequate air for intake system Check if the intake system

7. Valve timing not correct Check the valve timing
Check relevant electric parts. Replace
8. Other relevant electric parts working abnormal
them if necessary
1. The leaf spring pin is excessively worn. Replace the leaf spring pin

2. U-bolt gets loose or is damaged. Replace or fasten U-bolt.
The bodywork is inclined at
3. The leaf spring is found with reduced spring
running or parking. Replace the plate spring
force or inconsistent rigidity.
4. The leaf spring is broken. Replace the plate spring

1. The toe-in and camber are not as required. Wheel alignment
2. The tire pressure is not as required. Measure and adjust the tyre pressure
Tyre worn abnormally
3. The wheel is unbalanced. Tyre dynamic balance
4. The steering mechanism is distorted. Replace the steering mechanism
1. The belt pulley hub is broken. Replace the belt pulley

2. The flywheel is broken. Replace the flywheel
Knocking is serious when
3. The crankshaft bearing clearance is too large. Replace the crankshaft bearing
torque is increased.
4. The connecting rod bearing clearance is too
Replace the connecting rod bearing
large.

DI-410