12-12
140-3 SERIES
TESTING AND ADJUSTINGMEASURING COMPRESSION RESSURE, MEASURING BLOW-BY PRESSURE
8.
After completing the measurement, remove the
measurement equipment and set to the original
condition.
★ Install the fuel injector and fuel high-pressure
tube as follows.
1) Assemble holder (12) to injector (11), then
set in the mounting position on the cylinder
head.
2) Temporarily tighten mounting bolt (13).
★ Tighten so that the injector can still
move.
3) Temporarily tighten tube sleeve (14) to injec-
tor (11).
★ Tighten until it contacts the injector and
stops.
4) Tighten mounting bolt (13) fully.
3
Mounting bolt:
58.8 – 73.5 Nm {6.0 – 7.5 kgm}
5) Tighten tube sleeve (14) fully.
3
Sleeve:
39.2 – 49.0 Nm {4 – 5 kgm}
6) Install the injector wiring harness.
★ Tighten the terminal nuts at the top of the
injector in turn.
3
Nut:
2 ± 0.2 Nm {0.2 ± 0.02 kgm}
3
Rocker arm assembly mounting bolt:
93 – 103 Nm {9.5 – 10.5 kgm}
★ Adjust the valve clearance. For details, see
ADJUSTING VALVE CLEARANCE.
3
Cylinder head cover mounting bolt:
29.4 – 34.3 Nm {3.0 – 3.5 kgm}
MEASURING BLOW-BY PRES-
SURE
1.
Remove blow-by tube (1).
★ For the type where a hose is installed to the
tip of the blow-by tube, the measurement
can be made at the tip of the hose, so there
is no need to remove the blow-by tube.
2.
Install nozzle of pressure test kit
A
, then con-
nect to the pressure test kit.
3.
Measure the blow-by pressure when the engine
is running at rated horsepower.
★ When measuring with the engine mounted
on the machine, measure according to the
conditions given in the shop manual for the
machine.
4.
After completing the measurement, remove the
measurement equipment and set to the original
condition.
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