Komatsu PC200-8M0 Shop Manual page 971

200 Engine and cooling system
Removal and installation of fuel injector assembly
6) Check the inlet connector visually. If it has
any of the following faults, replace it with a
new one.
1] There is a burr or a worn part at front
end (a) or rear end (b) of the inlet
connector.
2] There is foreign material in the edge
filter at rear end (c) of the inlet con-
nector.
3] The O-ring at upper part (d) of the
inlet connector is cracked or deterio-
rated.
4] There is a worn part or an uneven
seat contact mark on sealing surface
(e) at the front end of the inlet con-
nector.
a If high-pressure fuel leaks through
the inlet connector, the sealing
surface has fine streaks or cracks.
PC200, 200LC, 220, 220LC-8M0
7) Apply engine oil (EO15W-40) to the
mounting hole of inlet connector (21) on
the head.
8) Apply engine oil (EO15W-40) to O-ring
(24) of inlet connector (21) and insert inlet
connector (21) fully into the head while
matching part (B) with the groove in the
head.
9) Tighten inlet connector (21) lightly by
using retaining nut (20). (Push into the
hole of the injector)
3
Retaining nut:
15 ± 5 Nm {1.5 ± 0.5 kgm}
10) Tighten mounting bolts (23) of fuel injector
(22) alternately.
3
Fuel injector mounting bolt:
8 ± 0.8 Nm {0.8 ± 0.08 kgm}
11) Tighten retaining nut (20).
3
Retaining nut:
50 ± 5 Nm {5.1 ± 0.5 kgm}
SEN06143-00
9
50-200