Komatsu 114E-3 Series, Shop Manual

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SEN00455-01 30 Testing and adjusting
20
114E-3 Series
4) Connect INSITE (troubleshooting kit) to
the engine and set it so that it can check
the engine speed.
a
When testing with the engine
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.
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.
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
2
}.
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.
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}
Low idle Below 30 drops/60 sec.
Cranking Max. 100 cc/30 sec.
Low idle Max. 300 cc/45 sec.