Komatsu ecot3 PC300LC-8 Shop Manual page 367

30 Testing and adjusting
4) Run the engine at low idle and test the return
rate from the pressure limiter.
a If the leakage from the pressure limiter is
in the following range, it is normal.
At low idle
5) After finishing testing, remove the testing
tools and return the removed parts.
3
Joint bolt (M12):
24
3.
Testing return rate from injector
1) Disconnect return tube (4) of the injector.
2) Connect testing tool H1 to the cylinder head
side, and insert its tip into measuring cylinder
H3.
3) Connect blocking tool H2 to the return tube
joint connection of the cylinder block side to
prevent leakage of the fuel.
PC300, 350-8
Below 30 droppings/min.
± ±
4 Nm {2.45 0.41 kgm}
4) Run the engine at low idle and test the return
rate from the injector.
a If the return rate from the injector is in the
following range, it is normal.
At low idle
At cranking
k
If the engine cannot be started, you
may measure the fuel return rate while
rotating the engine with the starting
motor. Do not rotate for more than 30
seconds continuously, however, for
protection of the starting motor.
5) After finishing testing, remove the testing
tools and return the removed parts.
3
Joint bolt (M12):
±
24
SEN02625-06
Max. 300 cc/45 sec.
Max. 100 cc/30 sec.
±
4 Nm {2.45 0.41 kgm}
27