Page 468 - Foton Workshop Manual - Auman EST-M

DI - 414 Diagnosis - Mechanical fault diagnosis

Failure phenomenon Possible reason Failure elimination
Check if there is carbon deposit If
Carbon deposit too much in the exit
necessary, replace the air outlet pipe of
pipe, downstream air valve or
air compressor and cylinder head
compressor cylinder head
assembly
Air compressor installation mechanism Check the installation mechanism of air
loose, worn or broken compressor
Air compressor too noisy
Spline drive coupling or gear worn
Check if the coupling is worn
excessively
Air compressor drive gear or engine Check the drive gear and gear system.
gear system worn or broken Repair them if necessary
Air compressor worn excessively or
Replace or reinstall the air compressor
broken inside
Air system leaking Check if the air system leaks
Air compressor not maintaining
Air compressor intake or exhaust system Check the assembly of air compressor
sufficient air pressure
leaking cylinder head. If necessary, replace it
Check the sealing parts of unloading
Unloading valve failed
valve and valve body
Air compressor intake or exhaust system Check the assembly of air compressor
Air compressor not pumping gas
leaking cylinder head. If necessary, replace it
Air compressor worn excessively or
Replace or reinstall the air compressor
broken inside
Vehicle instrument failure Check the vehicle instrument
The engine speed is too low, not
Increase the engine speed to 1200rpm
possible to charge
Generator belt loose Check the tension f generator belt
Electric system open Check the fuse, wire and connection
Battery cable loose, broken or corroded Check the battery cable and connection
Check the status of battery If necessary,
Battery broken
replace the battery
Generator belt pulley loose Tighten the belt pulley
Generator does not charge or not charge
Place the battery far awy from a heat
sufficiently Battery temperature too high
source
Test the output of generator If necessary,
Generator or voltage regulator failure replace the generator or voltage
regulator
Generator overloaded or generator
Install a big capacity generator
capacity lower than specification
Current electric error code is current or Read the error codes and perform
non-current error code high frequency service on the failures in
counter corresponding with the error codes

DI-414