Page 545 - Foton Workshop Manual - Auman EST-M

Engine section – Engine (Cummins ISF3.8) EG - 29

IN

Failure phenomenon Possible reason Failure elimination
DI
Check bulk coolant Replace with undefiled coolant after
Bulk coolant is contaminated
discharging coolant completely Replace the coolant filter
EG
Engine oil cooler failed Check the engine oil cooler

Cylinder head gasket leaking Check the cylinder head gasket TR
Coolant mixed with
Perform pressure test for the cooling system and check if
engine oil Cylinder head cracked or with holes
there is any leakage in coolant AX
Air compressor cylinder head cracked or
Check the cylinder head and gasket of air compressor
with holes or gasket leaking FR

Cylinder body cracked or with holes Check the cylinder body
ST
Check if there is leakage in all the pipelines and pipe

Engine oil pipe leaking joints. Tighten the loose pipe joints. If necessary, replace
the leaking engine oil pipeline BR

The return oil pipe of turbine booster is Dismount the oil return pipe of turbine booster to check if
BW
blocked it is blocked. Clean and replace the engine oil return pipe

Check and clean the crankshaft box respirator and
Crankshaft box venting system blocked
degassing pipe EL

Dismount the intake and exhaust pipes and check if there
Engine oil getting into turbine booster
is engine oil or fuel

Turbine booster Intake system resistance exceeding Check the intake system resistance. If necessary, clean or

leaking technical specification replace the air filter and intake pipe

Exhaust system resistance not meeting
Check the resistance of exhaust system
specification

Check the sealing parts of turbine booster compressor and
Turbine booster seal leaking
worm

Check the radial and axial clearances of bearing Check the
The impeller of turbine booster exceeds
turbine booster. If necessary, repair or replace the turbine
the specification
booster

Valve stem clearance too big or valve
Check the valve rod and sealing part
stem oil seal broken

EG-029