Komatsu PC130-7, Руководство по ремонту

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PC130-7
20-115
TESTING AND ADJUSTING
12. Remove delivery valve holder (14) for the No. 1
cylinder of fuel pump (13), delivery valve (15),
and spring (16), and then install delivery valve
holder (14) again.
13. Remove governor spring (17), and then put the
governor lever (18) of the fuel injection pump to
the stopper on the FULL side and fix it.
14. Remove the fixing bracket and lubrication tube of
fuel injection pump (13), loosen 4 mounting nuts
(19), and lean the fuel injection pump outward
fully.
a
Loosen the mounting nuts to a degree that
the fuel injection pump can be moved in and
out within the range of the oblong hole (Do
not loosen them so much that the fuel injec-
tion pump will have play).
15. Operating priming pump (20) of fuel injection
pump 13, move the injection pump gradually
toward the cylinder block and stop when the fuel
stops flowing out of No. 1 delivery valve holder
(14), and then tighten the mounting nuts tempo-
rarily.
a
The position where fuel stops flowing out of
the No. 1 delivery valve holder is the position
to start fuel injection in the No. 1 cylinder
(fuel injection timing).
16. Tighten 4 mounting nuts (19) of fuel injection
pump (13) securely and alternately.
17. After finishing adjustment, remove the adjusting
tools and return the removed parts.
a
Replace the O-ring and copper gasket of the
delivery valve with new ones.
k
Tighten the delivery valve securely in 3
times. (If it is not tightened sufficiently, the
gasket may be broken.)
3
Delivery valve holder:
39.2 – 44.1 Nm {4 – 4.5 kgm}
3
Fuel injection tube sleeve nut:
19.6 – 24.5 Nm {2 – 2.5 kgm}
3
Cylinder head cover mounting bolt:
7.84 – 9.8 Nm {0.8 – 1.0 kgm}
a
After finishing adjustment, if the stamped
lines of the fuel injection pump and holder
are not at the same position or there is not a
stamped line on the fuel injection pump,
stamp a new line to show that the fuel injec-
tion timing has been adjusted.
TESTING AND ADJUSTING FOR FUEL INJECTION TIMING
(1)