Komatsu 114E-3 Series Shop Manual page 138

SEN00455-01
4) Connect INSITE (troubleshooting kit) to
the engine and set it so that it can check
the engine speed.
a When
testing
mounted on the machine, set the real-
time monitor so that you can check
the engine speed.
5) Run the engine at low idle and test the
return rate from the pressure limiter.
a If the leakage from the pressure lim-
iter is in the following range, it is nor-
mal.
Low idle
6) After finishing testing, remove the testing
tools and return the removed parts.
3
Joint bolt (M12):
24 ± 4 Nm {2.45 ± 0.41 kgm}
3. Testing return rate from injector
1) Remove return tube (3) of the injector.
2) Connect hose kit H1 to the cylinder head
side, and insert its tip into measuring cylin-
der H3.
3) Connect adapter H2 to the return tube
joint connecting part at the cylinder block
side to block fuel leakage.
20
with the engine
Below 30 drops/60 sec.
30 Testing and adjusting
4) Connect INSITE (troubleshooting kit) to
the engine and set it so that it can check
the engine speed.
5) When the engine can be started, set "High
Pressure Leak Test" by INSITE (trouble-
shooting kit).
a By making setting as above, the fuel
high-pressure line at low idle is set to
150 MPa {1,500 kg/cm
6) 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.
Cranking
Low idle
k
When the engine cannot run, you
may test it by cranking the engine
with the starting motor. To protect
the starting motor, do not continu-
ously crank the engine 30 seconds
or more.
7) After finishing testing, remove the testing
tools and return the removed parts.
3
Joint bolt (M12):
24 ± 4 Nm {2.45 ± 0.41 kgm}
2
}.
Max. 100 cc/30 sec.
Max. 300 cc/45 sec.
114E-3 Series