Page 599 - Foton Workshop Manual - Auman EST-M

Engine section – Engine (Cummins ISF3.8) EG - 83

IN
j. After assembly, knock the valve stem with a plastic
hammer to ensure that the lock is properly seated.
DI

EG

TR

AX
k. Install the injector with the seal washer.

FR

ST

BR

l. Install the depth gauge assembly on the combustion BW
surface of the cylinder cover and zero it. Rotate the depth
gauge and measure the injector extrusion at the highest
EL
point of injector. Record the injector protrusion of each

injector
Injector extrusion:
Minimum: 1.94mm
Maximum: 2.47mm
If the injector protrusions are beyond the specifications, it is

necessary to check the thickness of the seal washer of the

injector. If the thickness of the seal washer is correct, it is
necessary to check to make sure the injector hole is clean
and free of debris. It is also necessary to ensure that the seal
washer is not "stacked" in the injector hole.

m. Rotate the depth gauge to measure the depth at which the

valve is recessed into the cylinder cover. Record the valve
depth of each valve
Depth of intake valve:
Minimum: 0.584mm Maximum: 1.092mm
Blast gate depth
Minimum: 0.965mm Maximum: 1.473mm
If the valve depth is not within the technical specifications,
it is necessary to check whether there is debris preventing
the valve from closing completely. If there is no debris,
remove the valve and check whether the valve seat and
valve face are damaged.

EG-083