Komatsu 75001, Shop Manual

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SEN03852-00
50-200
20
WA250, 250PZ-6
200 Engine and cooling system
Removal and installation of cylinder head assembly
8) Apply engine oil (For details, see "Table of
fuel, coolant and lubricants") to the mount-
ing hole of inlet connector (56) on the cyl-
inder head side.
9) Apply engine oil (For details, see "Table of
fuel, coolant and lubricants") to O-ring (69)
of inlet connector (56).
10) Insert inlet connector (56) perfectly, while
setting part ( B ) to the groove on the cylin-
der head side.
11) Secure inlet connector (56) by tightening
retaining nut (55) lightly.
3
Retaining nut (55):
15 ± 5 Nm {1.5 ± 0.5 kgm}
12) Tighten 2 mounting bolts (59) of fuel injec-
tor (57) alternately.
3
Fuel injector mounting bolt (59):
8.0 ± 0.8 Nm {0.8 ± 0.08 kgm}
13) Tighten retaining nut (55).
3
Retaining nut (55):
50 ± 5 Nm {5.1 ± 0.5 kgm}
14) Install the wiring harnesses to fuel injector
(57) and tighten 2 mounting nuts (58).
3
Wiring harness mounting nut (58):
1.5 ± 0.25 Nm {0.15 ± 0.03 kgm}
a Installed positions of wiring har-
nesses
Wiring harness
color
Cylinder No.
White 1, 3, 5
Black 2, 4, 6