Removal And Installation Of Fuel Injector Assembly - Komatsu Galeo PC138US-8 Shop Manual

SEN02710-00
Removal and installation of fuel
injector assembly
Removal
k
Disconnect the negative (–) terminal of the
battery beforehand.
1. Open engine hood (1).
2. Disconnection of air conditioner compres-
sor hose clamp and aftercooler hose
a When removing injector assemblies No. 3
and No. 4, completing the following proce-
dures in advance makes the work for Pro-
cedure 3 and onward easier.
1) Disconnect air conditioner compressor
hose clamps (2) and (3) and keep the
hose out of the way.
2) Disconnect aftercooler hose (4) on the
side of the air intake connector and keep it
out of the way.
4
3. Removal of the high-pressure pipe
a The following indicates the removal of
1
injector assembly of cylinder No. 1 for
example.
1) Remove clamp (5) from the high-pressure
pipe.
2) Remove boot (6) from the injector and
common rail sides. [*1]
3) Remove injector wiring connector (7).
Connector No.
Cylinder No. 1: CN1
Cylinder No. 2: CN2
Cylinder No. 3: CN3
Cylinder No. 4: CN4
4) Remove pin (8) and disconnect spill hose
(9).
5) Loosen sleeve nut (10) both on the injec-
tor side and common rail side and remove
high-pressure pipe (11). [*2]
50 Disassembly and assembly
PC138US, USLC-8